... Certificate:ISO9001:2000 Material: carbon stee ,stainless steel ,forged carbon steel ,alloy Product Description Name CARBON STEEL SMLS PIPES Size 1/8'' to 24 ... / pipes, API SPEC 5L pipes, MATERIAL Carbon Steel Tubes/Pipes ST 37, ASTM A106 Gr B; A53, A210; API 5L X42, X46 ... , X52, X56, X60, X65, X70, X80 A106 Gr. B Steel Seamless Pipe / Carbon ...