... Standard: ASME, ANSI, ASTM 4.Section Shape: Round seamless carton steel pipespecificaton:standard:ASTM ,ASME ,DIN, USE:Petroleum,chemical, ... SR ,Bend -Equal and reducing Tees,seamless and welded - Concentric and eccentric Reducers,seamless and welded -Caps, Wall thickness: From ... Seamless: from 1/2' up to 24' Welded: From 1/2' up to 72' Packaging: Wooden Cases painted black or oil seamless carbon steel ...