... .seamless carton steel pipe 2.Application: Structure Pipe 3.Standard: ASME, ANSI, ASTM 4.Section Shape: Round seamless carton steel pipespecificaton:standard:ASTM ... ,ASME ,DIN, USE:Petroleum,chemical,power,gas,metallurgy,shipbuilding,constructio,etc. ISO 9001CERTIFICATE. BUTT WELDED FITTING: ... ' Packaging: Wooden Cases painted black or oil seamless carbon steel pipe