ASTM B677 TP 904L stainless steel seamless pipe
ASTM B677 is a ASTM International standard specification that covers seamless, cold-worked or hot-finished nickel alloy pipe and tube intended for general corrosive service. It defines the requirements for materials designated by various UNS numbers, such as UNS N08904 (904L Stainless Steel), UNS N08925, and UNS N08926, which offer enhanced resistance to corrosion due to their specific alloy composition.