ASME B16.5 합금강 플랜지 치수 및 압력 등급
직접적인 답변
ASME B16.5 defines pressure-temperature ratings, 치수, 공차, 재료, marking and testing for pipe flanges and flanged fittings from NPS 1/2 NPS를 통해 24. It includes Classes 150, 300, 400, 600, 900 그리고 1500 across applicable sizes, with Class 2500 limited to NPS 1/2 NPS를 통해 12.
주요 시사점
- Material specification and dimensional standard must both appear on the order.
- The bore of a weld neck flange must be specified to match the pipe wall.
- Do not scale dimensions from a drawing or substitute B16.47 dimensions for B16.5.
Dimensions controlled by ASME B16.5
Depending on flange type, the standard controls outside diameter, 두께, 허브 치수, bolt-circle diameter, bolt-hole quantity and size, facing geometry and other details. Weld neck flanges additionally require attention to bore and weld-end configuration.
Tolerances matter. A nominal dimension from a catalogue is not a manufacturing inspection plan; use the standard and project drawing for acceptance.
Size and class scope
| Item | ASME B16.5 scope summary |
|---|---|
| Nominal size | NPS 1/2 NPS를 통해 24 |
| Classes | 150, 300, 400, 600, 900 그리고 1500 within applicable size ranges |
| 수업 2500 | NPS 1/2 NPS를 통해 12 |
| 재료 | Cast or forged flanges; specified blind/reducing configurations may use permitted plate material |
| Joint details | Includes requirements and recommendations for bolting, 개스킷 및 플랜지 조인트 |
Material and dimensions are separate decisions
“ASTM A182 F22” defines a material grade; “ASME B16.5 수업 600 WNRF” defines a dimensional and rating configuration. Neither statement alone creates a complete flange specification.
Add NPS, 깃 달기, pipe schedule/bore, 표면 마무리, standard edition and inspection documents. For RTJ flanges, include the correct ring groove designation.
Dimensional inspection before shipment
A useful report records critical dimensions against specified nominal values and tolerances. Inspection typically covers OD, 두께, hub, 구경, 볼트 서클, holes, facing and overall height. Calibrated equipment and drawing revision should be identified.
For replacement flanges, the buyer should provide an approved field measurement or equipment drawing. Corroded samples can conceal the original facing height or edge profile, so reverse engineering from a worn component requires engineering judgement and should not be treated as a standard catalogue order.
Protect sealing faces and weld ends after final inspection so packing and transport do not invalidate the accepted condition.
자주 묻는 질문
하다 ASME B16.5 cover NPS 30 플랜지?
아니요. ASME B16.47 addresses large-diameter steel flanges from NPS 26 NPS를 통해 60.
Is the bore fixed by pressure class?
Not by class alone. Weld neck bore selection must account for the specified pipe outside diameter and wall thickness.
Are Class 300 및 클래스 600 bolt patterns interchangeable?
그렇게 가정하지 마십시오. Use the exact dimensional table for the size, 수업과 직면.
참조된 기본 표준
항상 구매 주문서에 명시된 버전을 확인하고 설계 및 승인에 대한 완전한 통제 표준을 확보하십시오..
합금강 플랜지 견적 요청
재료 등급 보내기, 기준, NPS, 압력 등급, 플랜지형, 깃 달기, 파이프 일정, 수량 및 검사 요구 사항. SASA FLANGE 견적 전에 기술 설명을 검토합니다..
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