The company introduced high advanced set of submerged arc welded steel pipe of JCOE production and testing equipment, specializing in the production of thick wall of large diameter longitudinal double submerged arc welded pipe, the product specifically is OD406mm- OD1422mm, length 3m-12m, wall thickness 8mm-60mm, executive standard products for GB/T3091, GB/T9711.1, GB/ T9711.2, API 5L, PSL1/PSL2,etc. material: Q235, Q345, L175-L555,X42-X80.etc. The company products are widely applied in all types of oil and gas pipeline and the building steel structure, including oil, natural gas pipeline, pipeline, water pipeline of coal mining city, mine coal slurry pipeline, high voltage transmission line. Wind power, high-speed railway bridge, the steel construction of building.