... WP12,A234-WP11,A234-WP5 1.Production:API 5L carbon steel pipe 2.Specification:21.3mm&457mm (1/2”-22”)*2mm- ... ,ASTM,API5L,API5CT,DIN,JIS and so on 4.Out Diameter:21.3mm&457mm (1/2”-22”) 5.Wall Thickness: ... or 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)