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Articles techniques, comparaisons de normes, études de cas et guides d'achat sur la tuyauterie sous pression, les brides et les pièces forgées.
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NormesISO 7005-1:2011 is a base specification for steel flanges in industrial and general service piping. It covers chemical, power, oil & gas applications, but leaves flange series selection to the purchaser. This guide explains the standard's scope, key differences from ASME B16.5, and procurement checks.
TechniqueSelecting between ASTM A1084 and A923 for lean duplex fittings requires matching the standard to the alloy. Learn what to specify in your RFQ, how to verify test reports, and how to avoid common acceptance mistakes.
Guide d'achatA practical guide for EPC engineers and procurement managers on reviewing welding procedure specifications (WPS), procedure qualification records (PQR), and welder certificates, with key checks and common pitfalls.
NormesASTM A860 covers high-strength ferritic steel butt-welding fittings for high-pressure gas and oil pipelines. This guide explains scope, key requirements, and procurement checks, including the fact that hydrostatic testing is not mandatory under this specification.
TechniqueDuplex fittings require two distinct metallurgical checks: ferrite volume fraction by ASTM E562 and detrimental intermetallic phase detection by ASTM A923. Procurement buyers need to understand the difference before specifying.
Guide d'achatChoosing between metallic and nonmetallic flange gaskets requires more than a quick comparison. This guide explains the ASME standards that govern each family, the critical factors to evaluate, and the procurement checks that prevent costly joint failures.
NormesUnderstand the WP and CR classes in ASTM A815 for duplex stainless fittings, including subclasses WP-S, WP-W, WP-WX, and WP-WU, and how they affect procurement and inspection.
TechniqueMacroetch per ASTM E340 helps reveal weld penetration, cracks, and HAZ features. Learn how it fits into ASME Section IX qualification, what to verify, and RFQ inputs for buyers.
Guide d'achatA practical checklist for EPC engineers and procurement managers to verify ASME PCC-1 compliance in bolted flange joint assembly, covering procedures, training, and documentation.
