... A234-WP12,A234-WP11,A234-WP5 1.Production:API 5L carbon steel pipe 2.Specification:21.3mm&457mm (1/2”-22”)*2mm-70mm 3 ... Grade:10#,20#,45#,16Mn,27SiMn,Q235,ST42,ST52,, A106-a,A106-b,and so on 7.Length:6-12m, ... wamished as per buyer’s requestments 11.Supply:seamless steel pipe, ERW steel pipe, steel casing tubing, hot-rolled steel pipe, spiral steel pipe, hot-galvanized steel pipe steel pipe(plain end)