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Large-diameter forged flange production photo
3 팔월 2026

석유 및 가스 프로젝트를 위해 납품된 대구경 합금강 플랜지

프로젝트 뉴스Published: 3 팔월 2026SASA FLANGE Project Team
Project completed

SASA FLANGE delivered a large-diameter alloy steel flange package for an oil and gas project. The order included weld neck and blind configurations manufactured to the specified ASME B16.47 시리즈, with drilling, 깃 달기, 구경, NDE and packing controls documented before dispatch.

Project snapshot

Project status Delivered
재료 ASTM A182 F11 and F22 alloy steel
플랜지형 Weld neck and blind
기준 ASME B16.47, project-specified Series A or Series B
압력 등급 Class 150–600
크기 범위 NPS 26–48
점검 PMI, UT, 경도, dimensions and visual condition
Application Oil and gas transmission and processing facilities

Delivery highlights

Series designation was controlled because Series A and Series B are not dimensionally interchangeable.
Bolt-hole orientation and mating-equipment interfaces were checked against approved drawings.
Packing design accounted for higher component mass and exposed machined faces.

Controlling large-diameter flange interfaces

For NPS 26 and larger flanges, the order description identified ASME B16.47 and the required series. The series affects outside diameter, 볼트 서클, hole pattern and related dimensions, so it cannot be inferred after machining. Weld neck bores and end preparations were also checked against the connecting pipe wall and field welding plan.

Large components require staged dimensional inspection because small angular or drilling errors can become significant at the mating interface. Approved drawings and calibrated measurement tools were used as controlled references.

Handling, inspection and delivery controls

물질적 정체성, hardness and UT requirements were reviewed with the heat and production records. Final inspection included sealing faces, 볼트 구멍, flange thickness, hub profile, bore and marking. Lifting and handling points were planned to avoid using machined surfaces.

Rigid face covers, separation blocks and crate bracing prevented flange-to-flange contact during road, port and ocean handling. Package weights and lifting information were marked for the receiving team.

Information needed for a comparable RFQ

A comparable inquiry should identify the exact material specification and grade, 관리 표준 및 에디션, NPS, 압력 등급, 플랜지형, 깃 달기, 보어 또는 일치하는 파이프 일정, quantity and destination. For this project-news scope, the key reference points were ASTM A182 F11 and F22 alloy steel, Weld neck and blind, Class 150–600 그리고 NPS 26–48.

State the required EN 10204 certificate type, 열수 추적성, PMI extent, 경도 한계, 치수 보고서, NDE method and acceptance standard, third-party witness points, packing method and required delivery date at quotation stage. Early definition allows manufacturing, inspection and document schedules to be reviewed together.

생산, inspection and packing photos

Images show the relevant SASA FLANGE production, quality-control and shipment stages used for this project-news report.

Industrial warehouse for large project components
Finished components staged in a controlled warehouse area.
Quality inspection of large machined components
Dimensional checks supporting project release.
Large industrial flanges protected for export
Shipment protection for machined sealing surfaces.
ASME B16.5 대 ASME B16.47 플랜지 단조 합금강 플랜지의 NDT 검사 방법 보관 및 배송 중 합금강 플랜지를 보호하는 방법

자주 묻는 질문

What is the main purchasing difference between ASME B16.5 and B16.47?

ASME B16.5 covers NPS 1/2 through 24, while B16.47 covers large-diameter NPS 26 through 60 and requires a Series A or Series B choice.

Can Series A and Series B flanges mate directly?

They use different dimensional systems and generally should not be assumed interchangeable. Confirm the exact mating interface.

Why is special packing needed for large flanges?

Their mass and exposed faces increase the risk of impact, distortion and handling damage during international logistics.

Request a quotation for alloy steel flanges

Send the ASTM grade, 스탠다드와 에디션, NPS, 압력 등급, 플랜지형, 깃 달기, 보어 또는 파이프 일정, 수량, delivery destination and required PMI, 임사체험, 경도, third-party inspection and documentation.

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