... Certificate:ISO9001:2000 Material: carbon stee ,stainless steel ,forged carbon steel ,alloy Product DescriptionName CARBON STEEL SMLS PIPES Size 1/ ... steel tubes/ pipes, ERW steel tubes/ pipes, Cold drawn steel tubes/ pipes, API SPEC 5L pipes, Casing Pipes, MATERIAL. Carbon Steel Tubes ... /Pipes ST 37, ASTM A106 Gr B; A53, A210; API 5L X42, X46, X52, X56, X60, X65, X70, X80 Carbon Steel ...