... pipeTechnique: weld, sawh, sawl, erwOut diameter: 15-2540mm(size range different for different weld technique, most sizes can be pruduced)Wall Thickness ... : GB/T3091,GB/T9711,API5L,BS 1387, ASTM A252any suitable for welded steel pipePayment: T/T & irrevocable L/CDelivery Time: within ... sawh, four production lines of sawl, and two production lines for square steel pipes.