4" G1056 X95 API 5 DP Drill pipe XT 39 XT54 NC 38 premium connection Trade assurancesupplier3 1/2" S 135 API 5 DP Drill pipe/S 135 G 105/ R 3/EU NC 38 Trade assurance supplier
We could supply drill pipe and drill collar as per API 5D with stable and reliable quality. We use C type machine to upset the pipe ends and heat treat the full length of the pipe. For the weld seam we have advanced NDT equipments. The key equipment and technical data are controlled and monitored by computer.