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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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TechnicalHow to choose between Duplex 2205 and Super Duplex 2507 buttweld fittings using PREN, chloride pitting limits and NACE MR0175 sour service guidance.
TechnicalSide-by-side comparison of Inconel 625 and Incoloy 825 buttweld fittings: chemistry, temperature envelope, corrosion resistance and selection rules.
TechnicalWhen to specify normalizing, normalizing and tempering, or quench and temper for ASTM A234 and A420 buttweld pipe fittings on EPC projects.
TechnicalUnderstand the IIW carbon equivalent CEV formula, why it controls weldability, and how to use it when buying carbon and low-alloy pipe and fittings.
TechnicalCompare ASTM A350 LF2, LF3 and LF6 forged flanges by impact test temperature, chemistry and best-fit service for cold and cryogenic piping projects.
TechnicalA buyer's guide to ASTM A105 forged carbon steel flange chemistry limits, Brinell hardness ceiling, manganese-carbon trade-off and heat treatment options.
TechnicalFour common NDT methods are used on buttweld fittings and forged flanges. Each catches different defects — pick the wrong one and you ship the flaw.
TechnicalWPL6 fittings are spec'd by their Charpy V-notch impact properties at -45°C. Here is what your MTC must report and what the acceptance numbers actually are.
TechnicalUnderstand what ASTM A234 WPB requires for chemistry, heat treatment, and post-weld treatment so you can spec carbon-steel buttweld fittings without surprises at inspection.
