The virtues steel pipe company has introduced advanced double submerged arc automatic welding equipment straight seam steel pipe, and international high-end production quality the West German JCOE molding technology, specializing in the production of double-sided submerged arc welding straight seam steel pipe production line 4, the state-of-the-art German = steel pipe production equipment, high technology, and advanced technology. Produce diameter Φ350mm-1420mm, wall thickness 6mm-50mm, length 3m-14m, Material 20 #, 16Mn, Q235B, alloy steel, stainless steel high-grade steel pipe can be manufactured, a variety of non-model wall thickness specifications up to 1000 kinds, Nissan 800 tons; short production cycle, fast delivery, execution GB/T9711.3-2005 highest domestic standards and the American Petroleum Institute (API) standards.