... 2540mm Wall Thickness: 1-55mm Steel: carbon steel Standard: 10#-45#,st33,st35,st37,st45,st52 Steel Pipe Product: steel pipeTechnique: weld, sawh, ... ,GB/T9711,API5L,BS 1387, ASTM A252any suitable for welded steel pipePayment: T/T & irrevocable L/CDelivery Time: within 45 ... on steel pipes, we can five production lines of sawh, four production lines of sawl, and two production lines for square steel pipes ...