ASTM B622 Technical Specification: Seamless Nickel Alloy Pipes
The ASTM B622 standard establishes strict requirements for the production of seamless pipes and tubes made from high-alloy nickel and nickel-cobalt alloys. EV Group China ensures the supply of metal products that fully comply with these specifications, guaranteeing the precision of chemical composition and the stability of mechanical properties for every batch.
The technical conditions of the standard cover a wide range of alloy grades, including, but not limited to: UNS N10001, UNS N10242, UNS N10665, UNS N12160, UNS N10675, UNS N10276, UNS N06455, UNS N06007, UNS N08320, UNS N06975, UNS N06002, UNS N06985, UNS N06022, UNS N06035, UNS N08135, UNS N06255, UNS N06058, UNS N06059, UNS N06200, UNS N10362, UNS N06030, UNS N08031, UNS R30556, UNS N08535, UNS N06250, UNS N06060, UNS N06230, UNS N06686, UNS N10629, UNS N06210, UNS N10624, and UNS R20033. Each unit of production undergoes mandatory testing for tensile strength, yield strength, and elongation.
Quality control procedures at EV Group China include hydrostatic testing, non-destructive electrical inspection methods, and precision chemical analysis to ensure compliance with industry standards.
According to the specification, products are supplied in an annealed and descaled condition. The standard applies to seamless pipes with an outside diameter of up to 88.9 mm (3.5 inches).
Inch-pound units are considered the standard. Metric (SI) equivalents are provided for reference purposes only. The operation of the products must be carried out in accordance with the current Material Safety Data Sheets (MSDS) provided by EV Group China.
Note: This specification is harmonized with ASME requirements (Section II, Specification SB-622) for use in boiler and pressure vessel applications. UNS alloy numbering complies with ASTM E527 and SAE J1086 protocols.