gas and oil line pipe Normal OD: ... Q345B,L175,L210,L245 Stardard: GB/T9711.1 gas and line pipePlace of originTianjin China(Mainland)Applicationoil ... T9711.1Length5m-12mUsageline pipe, casing and tubing, fluid pipe, water delivery, heating pipe, power pipe, structure pipe, scaffold ... Accumlator-Forming-Telepathy Welding-Seam Heat Treatment-Air/Water Cooling-Body/Seam UT-Sizing Straightening-Cutting-Visual ...