Nickel alloy pipe material specifications are governed by ASTM and ASME standards based on the alloy grade, manufacturing method (seamless or welded), and intended service. Common specifications include ASTM B161 for pure nickel, ASTM B165 for nickel-copper, and ASTM B444 for Inconel 625. [1, 2, 3] Common ASTM / ASME Specifications by Alloy Type • Nickel 200 / 201 (UNS N02200 / N02201): ASTM B161 (Seamless Pipe/Tube) [ASTM B725](https://www.metaltubeind.com/nickel-pipe, -nickel-alloy-seamless-pipe, -pure-nickel-welded-pipe.html) (Welded Pipe). • Monel 400 (UNS N04400): ASTM B165 (Seamless Pipe/Tube), ASTM B725 (Welded Pipe). • Inconel 600 (UNS N06600): ASTM B167 (Seamless Pipe/Tube), ASTM B517 (Welded Pipe). • Inconel 625 (UNS N06625): ASTM B444 (Seamless Pipe/Tube), ASTM B704 (Welded Tube/Pipe). • Incoloy 825 (UNS N08825): ASTM B423 (Seamless Pipe/Tube), ASTM B705 (Welded Pipe). • Hastelloy C276 (UNS N10276): ASTM B622 (Seamless Pipe/Tube), ASTM B619 (Welded Pipe). [1, 2, 3, 4, 5] General Requirements and Dimensions • General Requirements: ASTM B829 covers general requirements for nickel and nickel alloy seamless pipe and tube. ASTM B751 covers welded nickel alloy tubes. • Dimensions: Standard dimensions follow ANSI/ASME B36.19 and B36.10 for nominal pipe sizes (NPS), outside diameters (OD), and schedule wall thicknesses (Sch 5S, 10S, 40S, 80S). [1, 7, 8, 9, 10] If you share the specific alloy grade (e.g., Alloy 400, Alloy 625) or whether you need seamless or welded pipe, I can provide the exact chemical composition limits and pressure ratings.

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