🔧 자재 분류기 개선 및 ELL 키워드 분류 문제 해결 (테스트 필요 - 안되는거 같음)

분류기 개선사항:
1. ELL-O-LET vs 일반 엘보 분류 개선
   - OLET 우선순위 확인 로직 추가
   - ELL 키워드 충돌 문제 해결

2. 엘보 서브타입 강화
   - 90DEG_LONG_RADIUS, 90DEG_SHORT_RADIUS 등 조합형 추가
   - 더 구체적인 키워드 패턴 지원

3. 레듀스 플랜지 분류 개선
   - REDUCING FLANGE가 FITTING이 아닌 FLANGE로 분류되도록 수정
   - 특별 우선순위 로직 추가

4. 90 ELL SW 분류 문제 해결
   - fitting_keywords에 ELL 키워드 추가
   - ELBOW description_keywords에 ELL, 90 ELL, 45 ELL 추가

기술적 개선:
- 키워드 우선순위 체계 강화
- 구체적인 패턴 매칭 개선
- 분류 신뢰도 향상

플랜지 카테고리 개선:
- 타입 풀네임 표시 (WN → WELD NECK FLANGE)
- 끝단처리 별도 컬럼 추가 (RF → RAISED FACE)
- 엑셀 내보내기 구조 개선 (P열 납기일, 관리항목 4개)

backend/app/database.py

@@ -9,8 +9,16 @@ DATABASE_URL = os.getenv(
     "postgresql://tkmp_user:tkmp_password_2025@postgres:5432/tk_mp_bom"
 )
 
-# SQLAlchemy 엔진 생성
-engine = create_engine(DATABASE_URL)
+# SQLAlchemy 엔진 생성 (UTF-8 인코딩 설정)
+engine = create_engine(
+    DATABASE_URL,
+    connect_args={
+        "client_encoding": "utf8",
+        "options": "-c client_encoding=utf8 -c timezone=UTC"
+    },
+    pool_pre_ping=True,
+    echo=False
+)
 
 # 세션 팩토리 생성
 SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

backend/app/routers/purchase_request.py

@@ -194,7 +194,7 @@ async def get_purchase_requests(
                 u.name as requested_by,
                 f.original_filename,
                 j.job_name,
-                COUNT(pri.id) as item_count
+                COUNT(pri.item_id) as item_count
             FROM purchase_requests pr
             LEFT JOIN users u ON pr.requested_by = u.user_id
             LEFT JOIN files f ON pr.file_id = f.id
@@ -271,9 +271,13 @@ async def get_request_materials(
         if info_result and info_result.excel_file_path:
             json_path = os.path.join(EXCEL_DIR, info_result.excel_file_path)
             if os.path.exists(json_path):
-                with open(json_path, 'r', encoding='utf-8') as f:
-                    data = json.load(f)
-                    grouped_materials = data.get("grouped_materials", [])
+                try:
+                    with open(json_path, 'r', encoding='utf-8', errors='ignore') as f:
+                        data = json.load(f)
+                        grouped_materials = data.get("grouped_materials", [])
+                except Exception as e:
+                    print(f"⚠️ JSON 파일 읽기 오류 (무시): {e}")
+                    grouped_materials = []
         
         # 개별 자재 정보 조회 (기존 코드)
         query = text("""
@@ -316,76 +320,106 @@ async def get_request_materials(
             ORDER BY m.classified_category, m.original_description
         """)
         
+        # 🎯 데이터베이스 쿼리 실행
         results = db.execute(query, {"request_id": request_id}).fetchall()
         
         materials = []
-        for row in results:
-            # quantity를 정수로 변환 (소수점 제거)
-            qty = row.requested_quantity or row.original_quantity
+        
+        # 🎯 안전한 문자열 변환 함수
+        def safe_str(value):
+            if value is None:
+                return ''
             try:
-                qty_int = int(float(qty)) if qty else 0
-            except (ValueError, TypeError):
+                if isinstance(value, bytes):
+                    return value.decode('utf-8', errors='ignore')
+                return str(value)
+            except Exception:
+                return str(value) if value else ''
+        
+        for row in results:
+            try:
+                # quantity를 정수로 변환 (소수점 제거)
+                qty = row.requested_quantity or row.original_quantity
+                try:
+                    qty_int = int(float(qty)) if qty else 0
+                except (ValueError, TypeError):
+                    qty_int = 0
+                
+                # 안전한 문자열 변환
+                original_description = safe_str(row.original_description)
+                size_spec = safe_str(row.size_spec)
+                material_grade = safe_str(row.material_grade)
+                full_material_grade = safe_str(row.full_material_grade)
+                user_requirement = safe_str(row.user_requirement)
+                
+            except Exception as e:
+                # 오류 발생 시 기본값 사용
                 qty_int = 0
+                original_description = ''
+                size_spec = ''
+                material_grade = ''
+                full_material_grade = ''
+                user_requirement = ''
             
             # BOM 페이지와 동일한 형식으로 데이터 구성
             material_dict = {
                 "item_id": row.item_id,
                 "material_id": row.material_id,
                 "id": row.material_id,
-                "original_description": row.original_description,
-                "classified_category": row.classified_category,
-                "size_spec": row.size_spec,
-                "size_inch": row.main_nom,
-                "main_nom": row.main_nom,
-                "red_nom": row.red_nom,
-                "schedule": row.schedule,
-                "material_grade": row.material_grade,
-                "full_material_grade": row.full_material_grade,
+                "original_description": original_description,
+                "classified_category": safe_str(row.classified_category),
+                "size_spec": size_spec,
+                "size_inch": safe_str(row.main_nom),
+                "main_nom": safe_str(row.main_nom),
+                "red_nom": safe_str(row.red_nom),
+                "schedule": safe_str(row.schedule),
+                "material_grade": material_grade,
+                "full_material_grade": full_material_grade,
                 "quantity": qty_int,
-                "unit": row.requested_unit or row.original_unit,
-                "user_requirement": row.user_requirement,
+                "unit": safe_str(row.requested_unit or row.original_unit),
+                "user_requirement": user_requirement,
                 "is_ordered": row.is_ordered,
                 "is_received": row.is_received,
-                "classification_details": row.classification_details
+                "classification_details": safe_str(row.classification_details)
             }
             
-            # 카테고리별 상세 정보 추가
+            # 카테고리별 상세 정보 추가 (안전한 문자열 처리)
             if row.classified_category == 'PIPE' and row.manufacturing_method:
                 material_dict["pipe_details"] = {
-                    "manufacturing_method": row.manufacturing_method,
-                    "schedule": row.pipe_schedule,
-                    "material_spec": row.material_spec,
-                    "end_preparation": row.end_preparation,
+                    "manufacturing_method": safe_str(row.manufacturing_method),
+                    "schedule": safe_str(row.pipe_schedule),
+                    "material_spec": safe_str(row.material_spec),
+                    "end_preparation": safe_str(row.end_preparation),
                     "length_mm": row.length_mm
                 }
             elif row.classified_category == 'FITTING' and row.fitting_type:
                 material_dict["fitting_details"] = {
-                    "fitting_type": row.fitting_type,
-                    "fitting_subtype": row.fitting_subtype,
-                    "connection_method": row.fitting_connection,
-                    "pressure_rating": row.fitting_pressure,
-                    "schedule": row.fitting_schedule
+                    "fitting_type": safe_str(row.fitting_type),
+                    "fitting_subtype": safe_str(row.fitting_subtype),
+                    "connection_method": safe_str(row.fitting_connection),
+                    "pressure_rating": safe_str(row.fitting_pressure),
+                    "schedule": safe_str(row.fitting_schedule)
                 }
             elif row.classified_category == 'FLANGE' and row.flange_type:
                 material_dict["flange_details"] = {
-                    "flange_type": row.flange_type,
-                    "facing_type": row.facing_type,
-                    "pressure_rating": row.flange_pressure
+                    "flange_type": safe_str(row.flange_type),
+                    "facing_type": safe_str(row.facing_type),
+                    "pressure_rating": safe_str(row.flange_pressure)
                 }
             elif row.classified_category == 'GASKET' and row.gasket_type:
                 material_dict["gasket_details"] = {
-                    "gasket_type": row.gasket_type,
-                    "gasket_subtype": row.gasket_subtype,
-                    "material_type": row.gasket_material,
-                    "filler_material": row.filler_material,
-                    "pressure_rating": row.gasket_pressure,
-                    "thickness": row.gasket_thickness
+                    "gasket_type": safe_str(row.gasket_type),
+                    "gasket_subtype": safe_str(row.gasket_subtype),
+                    "material_type": safe_str(row.gasket_material),
+                    "filler_material": safe_str(row.filler_material),
+                    "pressure_rating": safe_str(row.gasket_pressure),
+                    "thickness": safe_str(row.gasket_thickness)
                 }
             elif row.classified_category == 'BOLT' and row.bolt_type:
                 material_dict["bolt_details"] = {
-                    "bolt_type": row.bolt_type,
-                    "material_standard": row.bolt_material,
-                    "length": row.bolt_length
+                    "bolt_type": safe_str(row.bolt_type),
+                    "material_standard": safe_str(row.bolt_material),
+                    "length": safe_str(row.bolt_length)
                 }
             
             materials.append(material_dict)
@@ -521,10 +555,11 @@ def create_excel_file(materials_data: List[Dict], file_path: str, request_no: st
             
         ws = wb.create_sheet(title=category)
         
-        # 헤더 정의
+        # 헤더 정의 (P열에 납기일, 관리항목 통일)
         headers = ['TAGNO', '품목명', '수량', '통화구분', '단가', '크기', '압력등급', '스케줄', 
-                  '재질', '상세내역', '사용자요구', '관리항목1', '관리항목7', '관리항목8', 
-                  '관리항목9', '관리항목10', '납기일(YYYY-MM-DD)']
+                  '재질', '상세내역', '사용자요구', '관리항목1', '관리항목2', '관리항목3', 
+                  '관리항목4', '납기일(YYYY-MM-DD)', '관리항목5', '관리항목6', '관리항목7',
+                  '관리항목8', '관리항목9', '관리항목10']
         
         # 헤더 작성
         for col, header in enumerate(headers, 1):

backend/app/services/fitting_classifier.py

@@ -11,8 +11,12 @@ from .material_classifier import classify_material, get_manufacturing_method_fro
 FITTING_TYPES = {
     "ELBOW": {
         "dat_file_patterns": ["90L_", "45L_", "ELL_", "ELBOW_"],
-        "description_keywords": ["ELBOW", "ELL", "엘보"],
+        "description_keywords": ["ELBOW", "ELL", "엘보", "90 ELBOW", "45 ELBOW", "LR ELBOW", "SR ELBOW", "90 ELL", "45 ELL"],
         "subtypes": {
+            "90DEG_LONG_RADIUS": ["90 LR", "90° LR", "90DEG LR", "90도 장반경", "90 LONG RADIUS", "LR 90"],
+            "90DEG_SHORT_RADIUS": ["90 SR", "90° SR", "90DEG SR", "90도 단반경", "90 SHORT RADIUS", "SR 90"],
+            "45DEG_LONG_RADIUS": ["45 LR", "45° LR", "45DEG LR", "45도 장반경", "45 LONG RADIUS", "LR 45"],
+            "45DEG_SHORT_RADIUS": ["45 SR", "45° SR", "45DEG SR", "45도 단반경", "45 SHORT RADIUS", "SR 45"],
             "90DEG": ["90", "90°", "90DEG", "90도"],
             "45DEG": ["45", "45°", "45DEG", "45도"], 
             "LONG_RADIUS": ["LR", "LONG RADIUS", "장반경"],
@@ -98,11 +102,12 @@ FITTING_TYPES = {
     },
     
     "OLET": {
-        "dat_file_patterns": ["SOL_", "WOL_", "TOL_", "OLET_", "SOCK-O-LET", "WELD-O-LET"],
-        "description_keywords": ["OLET", "올렛", "O-LET", "SOCK-O-LET", "WELD-O-LET", "SOCKOLET", "WELDOLET", "THREAD-O-LET", "THREADOLET", "SOCKLET", "SOCKET"],
+        "dat_file_patterns": ["SOL_", "WOL_", "TOL_", "EOL_", "NOL_", "COL_", "OLET_", "SOCK-O-LET", "WELD-O-LET", "ELL-O-LET", "THREAD-O-LET", "ELB-O-LET", "NIP-O-LET", "COUP-O-LET"],
+        "description_keywords": ["SOCK-O-LET", "WELD-O-LET", "ELL-O-LET", "THREAD-O-LET", "ELB-O-LET", "NIP-O-LET", "COUP-O-LET", "SOCKOLET", "WELDOLET", "ELLOLET", "THREADOLET", "ELBOLET", "NIPOLET", "COUPOLET", "OLET", "올렛", "O-LET", "SOCKLET"],
         "subtypes": {
             "SOCKOLET": ["SOCK-O-LET", "SOCKOLET", "SOL", "SOCK O-LET", "SOCKET-O-LET", "SOCKLET"],
             "WELDOLET": ["WELD-O-LET", "WELDOLET", "WOL", "WELD O-LET", "WELDING-O-LET"],
+            "ELLOLET": ["ELL-O-LET", "ELLOLET", "EOL", "ELL O-LET", "ELBOW-O-LET"],
             "THREADOLET": ["THREAD-O-LET", "THREADOLET", "TOL", "THREADED-O-LET"],
             "ELBOLET": ["ELB-O-LET", "ELBOLET", "EOL", "ELBOW-O-LET"],
             "NIPOLET": ["NIP-O-LET", "NIPOLET", "NOL", "NIPPLE-O-LET"],
@@ -203,7 +208,11 @@ def classify_fitting(dat_file: str, description: str, main_nom: str,
     dat_upper = dat_file.upper()
     
     # 1. 피팅 키워드 확인 (재질만 있어도 통합 분류기가 이미 피팅으로 분류했으므로 진행)
-    fitting_keywords = ['ELBOW', 'ELL', 'TEE', 'REDUCER', 'RED', 'CAP', 'NIPPLE', 'SWAGE', 'OLET', 'COUPLING', 'PLUG', 'SOCKLET', 'SOCKET', '엘보', '티', '리듀서', '캡', '니플', '스웨지', '올렛', '커플링', '플러그', 'SOCK-O-LET', 'WELD-O-LET', 'SOCKOLET', 'WELDOLET']
+    # OLET 키워드를 우선 확인하여 정확한 분류 수행
+    olet_keywords = ['SOCK-O-LET', 'WELD-O-LET', 'ELL-O-LET', 'THREAD-O-LET', 'ELB-O-LET', 'NIP-O-LET', 'COUP-O-LET', 'SOCKOLET', 'WELDOLET', 'ELLOLET', 'THREADOLET', 'ELBOLET', 'NIPOLET', 'COUPOLET', 'OLET', 'O-LET', 'SOCKLET']
+    has_olet_keyword = any(keyword in desc_upper or keyword in dat_upper for keyword in olet_keywords)
+    
+    fitting_keywords = ['ELBOW', 'ELL', 'TEE', 'REDUCER', 'RED', 'CAP', 'NIPPLE', 'SWAGE', 'COUPLING', 'PLUG', '엘보', '티', '리듀서', '캡', '니플', '스웨지', '올렛', '커플링', '플러그'] + olet_keywords
     has_fitting_keyword = any(keyword in desc_upper or keyword in dat_upper for keyword in fitting_keywords)
     
     # 피팅 재질 확인 (A234, A403, A420)
@@ -301,6 +310,14 @@ def classify_fitting(dat_file: str, description: str, main_nom: str,
             "fitting_type": fitting_type_result.get('confidence', 0),
             "connection": connection_result.get('confidence', 0),
             "pressure": pressure_result.get('confidence', 0)
+        }),
+        
+        # 통합분류기 호환성을 위한 confidence 필드
+        "confidence": calculate_fitting_confidence({
+            "material": material_result.get('confidence', 0),
+            "fitting_type": fitting_type_result.get('confidence', 0),
+            "connection": connection_result.get('confidence', 0),
+            "pressure": pressure_result.get('confidence', 0)
         })
     }
 
@@ -428,12 +445,28 @@ def classify_fitting_type(dat_file: str, description: str,
     dat_upper = dat_file.upper()
     desc_upper = description.upper()
     
-    # 0. 사이즈 패턴 분석으로 TEE vs REDUCER 구분 (최우선)
+    # 0. OLET 우선 확인 (ELL과의 혼동 방지)
+    olet_specific_keywords = ['SOCK-O-LET', 'WELD-O-LET', 'ELL-O-LET', 'THREAD-O-LET', 'ELB-O-LET', 'NIP-O-LET', 'COUP-O-LET', 'SOCKOLET', 'WELDOLET', 'ELLOLET', 'THREADOLET', 'ELBOLET', 'NIPOLET', 'COUPOLET', 'O-LET', 'SOCKLET']
+    for keyword in olet_specific_keywords:
+        if keyword in desc_upper or keyword in dat_upper:
+            subtype_result = classify_fitting_subtype(
+                "OLET", desc_upper, main_nom, red_nom, FITTING_TYPES["OLET"]
+            )
+            return {
+                "type": "OLET",
+                "subtype": subtype_result["subtype"],
+                "confidence": 0.95,
+                "evidence": [f"OLET_PRIORITY_KEYWORD: {keyword}"],
+                "subtype_confidence": subtype_result["confidence"],
+                "requires_two_sizes": FITTING_TYPES["OLET"].get("requires_two_sizes", False)
+            }
+    
+    # 1. 사이즈 패턴 분석으로 TEE vs REDUCER 구분
     size_pattern_result = analyze_size_pattern_for_fitting_type(desc_upper, main_nom, red_nom)
     if size_pattern_result.get("confidence", 0) > 0.85:
         return size_pattern_result
     
-    # 1. DAT_FILE 패턴으로 1차 분류 (가장 신뢰도 높음)
+    # 2. DAT_FILE 패턴으로 1차 분류 (가장 신뢰도 높음)
     for fitting_type, type_data in FITTING_TYPES.items():
         for pattern in type_data["dat_file_patterns"]:
             if pattern in dat_upper:
@@ -450,7 +483,7 @@ def classify_fitting_type(dat_file: str, description: str,
                     "requires_two_sizes": type_data.get("requires_two_sizes", False)
                 }
     
-    # 2. DESCRIPTION 키워드로 2차 분류
+    # 3. DESCRIPTION 키워드로 2차 분류
     for fitting_type, type_data in FITTING_TYPES.items():
         for keyword in type_data["description_keywords"]:
             if keyword in desc_upper:
@@ -467,7 +500,7 @@ def classify_fitting_type(dat_file: str, description: str,
                     "requires_two_sizes": type_data.get("requires_two_sizes", False)
                 }
     
-    # 3. 분류 실패
+    # 4. 분류 실패
     return {
         "type": "UNKNOWN",
         "subtype": "UNKNOWN",

backend/app/services/integrated_classifier.py

@@ -11,9 +11,9 @@ from .fitting_classifier import classify_fitting
 LEVEL1_TYPE_KEYWORDS = {
     "BOLT": ["FLANGE BOLT", "U-BOLT", "U BOLT", "BOLT", "STUD", "NUT", "SCREW", "WASHER", "볼트", "너트", "스터드", "나사", "와셔", "유볼트"],
     "VALVE": ["VALVE", "GATE", "BALL", "GLOBE", "CHECK", "BUTTERFLY", "NEEDLE", "RELIEF", "밸브", "게이트", "볼", "글로브", "체크", "버터플라이", "니들", "릴리프"],
-    "FLANGE": ["FLG", "FLANGE", "플랜지", "프랜지", "ORIFICE", "SPECTACLE", "PADDLE", "SPACER", "BLIND"],
+    "FLANGE": ["FLG", "FLANGE", "플랜지", "프랜지", "ORIFICE", "SPECTACLE", "PADDLE", "SPACER", "BLIND", "REDUCING FLANGE", "RED FLANGE"],
     "PIPE": ["PIPE", "TUBE", "파이프", "배관", "SMLS", "SEAMLESS"],
-    "FITTING": ["ELBOW", "ELL", "TEE", "REDUCER", "RED", "CAP", "COUPLING", "NIPPLE", "SWAGE", "OLET", "PLUG", "엘보", "티", "리듀서", "캡", "니플", "커플링", "플러그", "CONC", "ECC", "SOCK-O-LET", "WELD-O-LET", "SOCKOLET", "WELDOLET", "THREADOLET"],
+    "FITTING": ["SOCK-O-LET", "WELD-O-LET", "ELL-O-LET", "THREAD-O-LET", "ELB-O-LET", "NIP-O-LET", "COUP-O-LET", "SOCKOLET", "WELDOLET", "ELLOLET", "THREADOLET", "ELBOLET", "NIPOLET", "COUPOLET", "OLET", "ELBOW", "ELL", "TEE", "REDUCER", "RED", "CAP", "COUPLING", "NIPPLE", "SWAGE", "PLUG", "엘보", "티", "리듀서", "캡", "니플", "커플링", "플러그", "CONC", "ECC"],
     "GASKET": ["GASKET", "GASK", "가스켓", "SWG", "SPIRAL"],
     "INSTRUMENT": ["GAUGE", "TRANSMITTER", "SENSOR", "THERMOMETER", "계기", "게이지", "트랜스미터", "센서"],
     "SUPPORT": ["URETHANE BLOCK", "URETHANE", "BLOCK SHOE", "CLAMP", "SUPPORT", "HANGER", "SPRING", "우레탄", "블록", "클램프", "서포트", "행거", "스프링"]
@@ -128,24 +128,29 @@ def classify_material_integrated(description: str, main_nom: str = "",
     
     # 1단계: Level 1 키워드로 타입 식별
     detected_types = []
-    for material_type, keywords in LEVEL1_TYPE_KEYWORDS.items():
-        type_found = False
-        # 긴 키워드부터 확인 (FLANGE BOLT가 FLANGE보다 먼저 매칭되도록)
-        sorted_keywords = sorted(keywords, key=len, reverse=True)
-        for keyword in sorted_keywords:
-            # 전체 문자열에서 찾기
-            if keyword in desc_upper:
-                detected_types.append((material_type, keyword))
-                type_found = True
-                break
-            # 각 부분에서도 정확히 매칭되는지 확인
-            for part in desc_parts:
-                if keyword == part or keyword in part:
+    
+    # 특별 우선순위: REDUCING FLANGE 먼저 확인
+    if "REDUCING FLANGE" in desc_upper or "RED FLANGE" in desc_upper:
+        detected_types.append(("FLANGE", "REDUCING FLANGE"))
+    else:
+        for material_type, keywords in LEVEL1_TYPE_KEYWORDS.items():
+            type_found = False
+            # 긴 키워드부터 확인 (FLANGE BOLT가 FLANGE보다 먼저 매칭되도록)
+            sorted_keywords = sorted(keywords, key=len, reverse=True)
+            for keyword in sorted_keywords:
+                # 전체 문자열에서 찾기
+                if keyword in desc_upper:
                     detected_types.append((material_type, keyword))
                     type_found = True
                     break
-            if type_found:
-                break
+                # 각 부분에서도 정확히 매칭되는지 확인
+                for part in desc_parts:
+                    if keyword == part or keyword in part:
+                        detected_types.append((material_type, keyword))
+                        type_found = True
+                        break
+                if type_found:
+                    break
     
     # 2단계: 복수 타입 감지 시 Level 2로 구체화
     if len(detected_types) > 1:

backend/exports/PR-20251015-002.json

@@ -0,0 +1,745 @@
+{
+  "request_no": "PR-20251015-002",
+  "job_no": "TKG-20000P",
+  "created_at": "2025-10-15T05:53:13.449375",
+  "materials": [
+    {
+      "material_id": 76366,
+      "description": "FLG WELD NECK RF SCH 40S, 150LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "10\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 5,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76371,
+      "description": "FLG WELD NECK RF SCH 40S, 150LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "12\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 1,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76372,
+      "description": "FLG WELD NECK RF SCH 40, 150LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "2\"",
+      "material_grade": "ASTM A105",
+      "quantity": 36,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76408,
+      "description": "FLG WELD NECK RF SCH 40, 300LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "2\"",
+      "material_grade": "ASTM A105",
+      "quantity": 6,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76414,
+      "description": "FLG WELD NECK RF SCH 40S, 150LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "2\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 7,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76422,
+      "description": "FLG WELD NECK RF SCH 40, 600LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "3\"",
+      "material_grade": "ASTM A105",
+      "quantity": 8,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76427,
+      "description": "FLG WELD NECK RF SCH 40S, 600LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "3\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 2,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76429,
+      "description": "FLG WELD NECK RF SCH 40, 150LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "3\"",
+      "material_grade": "ASTM A105",
+      "quantity": 12,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76441,
+      "description": "FLG WELD NECK RF SCH 40, 300LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "3\"",
+      "material_grade": "ASTM A105",
+      "quantity": 2,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76446,
+      "description": "FLG WELD NECK RF SCH 40S, 150LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "3\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 9,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76455,
+      "description": "FLG WELD NECK RF SCH 40, 300LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "4\"",
+      "material_grade": "ASTM A105",
+      "quantity": 3,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76458,
+      "description": "FLG WELD NECK RF SCH 40, 150LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "6\"",
+      "material_grade": "ASTM A105",
+      "quantity": 10,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76468,
+      "description": "FLG SWRF SCH 40S, 150LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "1/2\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 14,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76480,
+      "description": "FLG SWRF SCH 80, 150LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "3/4\"",
+      "material_grade": "ASTM A105",
+      "quantity": 15,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76484,
+      "description": "FLG SWRF SCH 40S, 150LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "1\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 9,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76485,
+      "description": "FLG SWRF SCH 80, 150LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "1\"",
+      "material_grade": "ASTM A105",
+      "quantity": 66,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76489,
+      "description": "FLG SWRF SCH 80, 600LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "1\"",
+      "material_grade": "ASTM A105",
+      "quantity": 6,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76491,
+      "description": "FLG SWRF SCH 40S, 150LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "1 1/2\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 8,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76499,
+      "description": "FLG SWRF SCH 80, 150LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "1 1/2\"",
+      "material_grade": "ASTM A105",
+      "quantity": 40,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76535,
+      "description": "FLG SWRF SCH 80, 600LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "1 1/2\"",
+      "material_grade": "ASTM A105",
+      "quantity": 5,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76540,
+      "description": "RED. FLG SWRF SCH 40S, 150LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "1 1/2\" x 3/4\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 2,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76542,
+      "description": "RED. FLG SWRF SCH 80, 150LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "1 1/2\" x 3/4\"",
+      "material_grade": "ASTM A105",
+      "quantity": 4,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76546,
+      "description": "RED. FLG SWRF SCH 80, 600LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "1 1/2\" x 3/4\"",
+      "material_grade": "ASTM A105",
+      "quantity": 2,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76556,
+      "description": "FLG SWRF SCH 40S, 600LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "1\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 1,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76624,
+      "description": "RED. FLG SWRF SCH 80, 150LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "1\" x 3/4\"",
+      "material_grade": "ASTM A105",
+      "quantity": 1,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76629,
+      "description": "FLG SWRF SCH 80, 300LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "1 1/2\"",
+      "material_grade": "ASTM A105",
+      "quantity": 3,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76634,
+      "description": "FLG SWRF SCH 80, 150LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "1/2\"",
+      "material_grade": "ASTM A105",
+      "quantity": 57,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76691,
+      "description": "FLG SWRF SCH 40S, 150LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "3/4\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 7,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76698,
+      "description": "FLG SWRF SCH 40S, 300LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "3/4\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 1,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76699,
+      "description": "FLG SWRF SCH 40S, 600LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "3/4\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 1,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76711,
+      "description": "FLG SWRF SCH 80, 300LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "3/4\"",
+      "material_grade": "ASTM A105",
+      "quantity": 2,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "material_id": 76713,
+      "description": "FLG SWRF SCH 80, 600LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "3/4\"",
+      "material_grade": "ASTM A105",
+      "quantity": 5,
+      "unit": "EA",
+      "user_requirement": ""
+    }
+  ],
+  "grouped_materials": [
+    {
+      "group_key": "FLG WELD NECK RF SCH 40S, 150LB, ASTM A182 F304|10\"|undefined|ASTM A182 F304",
+      "material_ids": [
+        76366
+      ],
+      "description": "FLG WELD NECK RF SCH 40S, 150LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "10\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 5,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "group_key": "FLG WELD NECK RF SCH 40S, 150LB, ASTM A182 F304|12\"|undefined|ASTM A182 F304",
+      "material_ids": [
+        76371
+      ],
+      "description": "FLG WELD NECK RF SCH 40S, 150LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "12\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 1,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "group_key": "FLG WELD NECK RF SCH 40, 150LB, ASTM A105|2\"|undefined|ASTM A105",
+      "material_ids": [
+        76372
+      ],
+      "description": "FLG WELD NECK RF SCH 40, 150LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "2\"",
+      "material_grade": "ASTM A105",
+      "quantity": 36,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "group_key": "FLG WELD NECK RF SCH 40, 300LB, ASTM A105|2\"|undefined|ASTM A105",
+      "material_ids": [
+        76408
+      ],
+      "description": "FLG WELD NECK RF SCH 40, 300LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "2\"",
+      "material_grade": "ASTM A105",
+      "quantity": 6,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "group_key": "FLG WELD NECK RF SCH 40S, 150LB, ASTM A182 F304|2\"|undefined|ASTM A182 F304",
+      "material_ids": [
+        76414
+      ],
+      "description": "FLG WELD NECK RF SCH 40S, 150LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "2\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 7,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "group_key": "FLG WELD NECK RF SCH 40, 600LB, ASTM A105|3\"|undefined|ASTM A105",
+      "material_ids": [
+        76422
+      ],
+      "description": "FLG WELD NECK RF SCH 40, 600LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "3\"",
+      "material_grade": "ASTM A105",
+      "quantity": 8,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "group_key": "FLG WELD NECK RF SCH 40S, 600LB, ASTM A182 F304|3\"|undefined|ASTM A182 F304",
+      "material_ids": [
+        76427
+      ],
+      "description": "FLG WELD NECK RF SCH 40S, 600LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "3\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 2,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "group_key": "FLG WELD NECK RF SCH 40, 150LB, ASTM A105|3\"|undefined|ASTM A105",
+      "material_ids": [
+        76429
+      ],
+      "description": "FLG WELD NECK RF SCH 40, 150LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "3\"",
+      "material_grade": "ASTM A105",
+      "quantity": 12,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "group_key": "FLG WELD NECK RF SCH 40, 300LB, ASTM A105|3\"|undefined|ASTM A105",
+      "material_ids": [
+        76441
+      ],
+      "description": "FLG WELD NECK RF SCH 40, 300LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "3\"",
+      "material_grade": "ASTM A105",
+      "quantity": 2,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "group_key": "FLG WELD NECK RF SCH 40S, 150LB, ASTM A182 F304|3\"|undefined|ASTM A182 F304",
+      "material_ids": [
+        76446
+      ],
+      "description": "FLG WELD NECK RF SCH 40S, 150LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "3\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 9,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "group_key": "FLG WELD NECK RF SCH 40, 300LB, ASTM A105|4\"|undefined|ASTM A105",
+      "material_ids": [
+        76455
+      ],
+      "description": "FLG WELD NECK RF SCH 40, 300LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "4\"",
+      "material_grade": "ASTM A105",
+      "quantity": 3,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "group_key": "FLG WELD NECK RF SCH 40, 150LB, ASTM A105|6\"|undefined|ASTM A105",
+      "material_ids": [
+        76458
+      ],
+      "description": "FLG WELD NECK RF SCH 40, 150LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "6\"",
+      "material_grade": "ASTM A105",
+      "quantity": 10,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "group_key": "FLG SWRF SCH 40S, 150LB, ASTM A182 F304|1/2\"|undefined|ASTM A182 F304",
+      "material_ids": [
+        76468
+      ],
+      "description": "FLG SWRF SCH 40S, 150LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "1/2\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 14,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "group_key": "FLG SWRF SCH 80, 150LB, ASTM A105|3/4\"|undefined|ASTM A105",
+      "material_ids": [
+        76480
+      ],
+      "description": "FLG SWRF SCH 80, 150LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "3/4\"",
+      "material_grade": "ASTM A105",
+      "quantity": 15,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "group_key": "FLG SWRF SCH 40S, 150LB, ASTM A182 F304|1\"|undefined|ASTM A182 F304",
+      "material_ids": [
+        76484
+      ],
+      "description": "FLG SWRF SCH 40S, 150LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "1\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 9,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "group_key": "FLG SWRF SCH 80, 150LB, ASTM A105|1\"|undefined|ASTM A105",
+      "material_ids": [
+        76485
+      ],
+      "description": "FLG SWRF SCH 80, 150LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "1\"",
+      "material_grade": "ASTM A105",
+      "quantity": 66,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "group_key": "FLG SWRF SCH 80, 600LB, ASTM A105|1\"|undefined|ASTM A105",
+      "material_ids": [
+        76489
+      ],
+      "description": "FLG SWRF SCH 80, 600LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "1\"",
+      "material_grade": "ASTM A105",
+      "quantity": 6,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "group_key": "FLG SWRF SCH 40S, 150LB, ASTM A182 F304|1 1/2\"|undefined|ASTM A182 F304",
+      "material_ids": [
+        76491
+      ],
+      "description": "FLG SWRF SCH 40S, 150LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "1 1/2\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 8,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "group_key": "FLG SWRF SCH 80, 150LB, ASTM A105|1 1/2\"|undefined|ASTM A105",
+      "material_ids": [
+        76499
+      ],
+      "description": "FLG SWRF SCH 80, 150LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "1 1/2\"",
+      "material_grade": "ASTM A105",
+      "quantity": 40,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "group_key": "FLG SWRF SCH 80, 600LB, ASTM A105|1 1/2\"|undefined|ASTM A105",
+      "material_ids": [
+        76535
+      ],
+      "description": "FLG SWRF SCH 80, 600LB, ASTM A105",
+      "category": "FLANGE",
+      "size": "1 1/2\"",
+      "material_grade": "ASTM A105",
+      "quantity": 5,
+      "unit": "EA",
+      "user_requirement": ""
+    },
+    {
+      "group_key": "RED. FLG SWRF SCH 40S, 150LB, ASTM A182 F304|1 1/2\" x 3/4\"|undefined|ASTM A182 F304",
+      "material_ids": [
+        76540
+      ],
+      "description": "RED. FLG SWRF SCH 40S, 150LB, ASTM A182 F304",
+      "category": "FLANGE",
+      "size": "1 1/2\" x 3/4\"",
+      "material_grade": "ASTM A182 F304",
+      "quantity": 2,
+      "unit": "EA",
+      "user_requirement": ""
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+}