Normalized and tempered A335 P91 pipes are intended for high-temperature service. Normalized and tempered A335 P91 pipes are ordered to this specification shall be suitable for fusion welding, bending, flanging (vanstoning), and similar forming operations.
Normalized and tempered A335 P91 pipes shall not have a hardness not exceeding 250 HB/265 HV [25HRC].
Reference Documents:
ASTM A999/A 999M Specification for General requirements for Alloy and Stainless Steel Pipe.
ASTM E 213 Practice for Ultrasonic Examination of metal Pipe and Tubing
ASTM E 309 Practice for Eddy-Current Examination of Steel Tubular Products Using Magnetic Saturation
ASTM E 381 Method of Macroetch testing Steel Bars, Billets, Blooms, and Forgings
ASTM E 570 Practice for Flux Leakage Examination of Ferromagnetic Steel Tubular Products
ASME B26.10M Welded and Seamless Wrought Steel Pipe
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