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319개 기사

合金弯头 (2).jpg표준
표준

ASTM A182: Forged Alloy and Stainless Piping Components

ASTM A182 covers forged low-alloy and stainless steel flanges, fittings, valves, and parts for high-temperature service. This guide explains what buyers must specify beyond the standard, including grade, heat treatment, and dimensional standards.

2026년 10월 10일6 분Hebei Haihao Group
不锈钢管.jpg기술
기술

Weld Repair Acceptance for Wrought Steel Fittings

Weld repair acceptance for A234 and other wrought steel fittings is governed by the product specification, A960/A960M common requirements, and the purchase order — not by a generic visual pass/fail rule. Here's what to verify.

2026년 10월 6일8 분Hebei Haihao Group
化工厂.jpg사례 연구
사례 연구

Payara and the Prosperity FPSO: A Guyana Offshore Piping Reference

ExxonMobil's Payara development and the Prosperity FPSO mark a major milestone in Guyana's offshore oil production. This case study reviews the project's public facts and outlines what piping procurement professionals should verify when referencing such projects.

2026년 10월 5일5 분Hebei Haihao Group
水暖管件.jpg표준
표준

ASME B16.39 Malleable Iron Pipe Unions: Classes and Tests

ASME B16.39 covers threaded malleable iron unions in Classes 150, 250, and 300, including design, ratings, materials, threads, and tests. This guide explains what EPC engineers and procurement managers must verify when specifying these unions.

2026년 10월 2일5 분Hebei Haihao Group