ASTM A335 P5 P91 Pipe
ASTM A335 P91 is the part of ASTM A335, The pipe shall be suitable for bending, flanging, and similar forming operations, and for Chrome Welding Tig & Stick P91 is a type of creep strength enhanced ferritic (CSEF) alloy — steels designed to retain strength at extremely high temperatures P91 Pipeline heat treatment. P91 (9% chrome and 1% molybdenum) is designed to retain its strength and resist failure due to creep at extremely high operating temperatures ...