JLSP.JLSP was established in April 2000 and is a leading domestic supplier of high-end submerged arc welded steel pipes. The company operates China's first JCOE submerged arc welded pipe production line. Since commencing operations in 2002, it has successfully filled the domestic gap in high-grade steel (X70 to X120), high-strain, and subsea pipeline-grade submerged arc welded steel pipes. Currently, JLSP operates two advanced JCOE large-diameter pipe production lines alongside multiple facilities for hot-bent pipe, large pipe fittings, anti-corrosion coating, and valves. This comprehensive setup enables the company to deliver a full range of products and services—from steel pipes and bent pipes to pipe fittings and anti-corrosion solutions. Its annual production capacity includes 800,000 tons of large-diameter submerged arc welded steel pipes, 8,000 hot-bent pipes, 2,000 large pipe fittings, and 1,000 sets of ball valves. These products are widely used in major projects such as high-pressure oil and gas transportation.