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Technical articles, standards comparisons, project case studies and buyer guides on pressure piping components, flanges and forged fittings.

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319 articles

合金弯头 (2).jpgStandards
Standards

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.

Oct 10, 20266 min readHebei Haihao Group
不锈钢管.jpgTechnical
Technical

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.

Oct 6, 20268 min readHebei Haihao Group
化工厂.jpgCase studies
Case studies

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.

Oct 5, 20265 min readHebei Haihao Group
水暖管件.jpgStandards
Standards

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.

Oct 2, 20265 min readHebei Haihao Group