Steel Pipe Manufacturing Co., Ltd. of Hebei virtue www.hbmeide.com www.chaoyuegg.com specializing in the production of straight seam steel pipe, thick wall steel pipe professional steel pipe manufacturer can produce diameter of 350mm-1420mm, wall thickness 8mm-50mm, length 3-14m, Material 20 # , 16Mn, Q235, steel structure engineering, fluid engineering, can all be used as executable the API, GB/T3091-2001, GB/T9711.1 standard. A variety of non-model wall thickness specifications up to more than 1,200 species, more than 1,000 tons of Nissan; short production cycle, fast delivery. Welcome to call us