Liaocheng Yihai Steel Pipe was established in 2008 and currently specializes in the production of welded pipes, heavy-wall welded pipes, heavy-wall coiled pipes, and is rapidly becoming a base for江北coiled pipe production and Shandong straight seam welded pipe manufacturing. The company's main equipment includes heavy-duty rolling machines, 1,000-ton alignment machines, and large-scale rolling machine groups. We consistently produce and sell various specifications and sizes of heavy-wall coiled pipes, heavy-wall welded pipes, large-diameter heavy-wall plate coils, heavy-wall submerged arc welded pipes, tee-welded pipes, 45# heavy-wall welded pipes, Q235 heavy-wall welded pipes, Q345 heavy-wall welded pipes, straight seam welded pipes, double-sided submerged arc welded pipes, and conical pipes, etc. Our coiled pipes have outer diameters ranging from 350mm to 4000mm, wall thicknesses from 10mm to 200mm, and all products can undergo non-destructive testing on the weld seams, which can be removed, or we can process customer-supplied materials. Hot-rolled heavy-wall coiled pipes (welded pipes) are widely used in engineering bridge columns, mechanical rolling, pile driving pipes, drainage pipes, large-diameter rolling drums, billboard posts, boilers, hydraulic cylinders, mold pipe fittings, and more.