... ,BS,API,and so on.Material: Carbon steel,stainless steel,alloy steelCARBON STEEL :ASTM A234 WPB, WPC; ASTM A420 ... 46, WPHY-52, WPHY-60, WPHY-65, WPHY-70STAINLESS STEEL : ASTM A403 WP304/304L, WP316/316L, WP321, WP347 ... 31254,ASTM A 815 UNS S31803, UNS S32750, UNS S32760ALLOY STEEL :ASTM A234 WP1, WP11, WP12, WP22, WP5, ... reducer,cap,and so on. ANSI stainless steel 304 screwed end elbow with high quality