Standard alloy tube with a hollow cross-section, a large number of pipes used for transporting fluids, such as transportation of oil, gas, gas, water, thick-walled steel machining, and some solid materials, pipes and so on. Compared to other alloy steel pipe and solid steel bar, the same torsional strength in bending, lighter, alloy steel pipe is an economic cross-section steel, widely used in the manufacture of structural parts and mechanical parts, such as drill pipe, automotive transmission shafts, bicycle frames and construction using steel scaffolding. With a steel pipe manufacturing ring parts q235 thick-walled steel, can improve material utilization 9948 thick-walled steel, thick-walled steel simplify the manufacturing process, saving materials and processing time, such as bearing rings, jack sets, is currently widely used to make steel . Steel pipe or a variety of conventional weapons indispensable material, barrel, barrel, etc. to make steel. Different shapes steel pipe cross-sectional area can be divided into tube and shaped tubes. Because in the perimeter of equal conditions, the largest area of ??a circle with a circular tube can carry more fluid. In addition, the circular cross section to withstand internal or external radial pressure, the force is uniform, so the vast majority of pipe is pipe. There are large diameter alloy tube alloy tube, thick-walled alloy tube, high alloy pipe, alloy flanges, alloy elbow, P91 alloy pipe and seamless steel pipe, another fertilizer tube is also very common. 12Cr1MoV and differences 12Cr1MoVg: The national standards are steel, 12Cr1MoV is common steel, specialty steel and 12Cr1MoVg is that the pressure vessel steel, where g is the first letter of the Pinyin pot boiler, slightly different chemical composition . 12Cr1MoV and 12Cr1MoVg12Cr1MoVg chemical composition: C0.08 ~ 0.15, Si0.17 ~ 0.37, Mn0.40 ~ 0.70, Mo 0.25 ~ 0.35, Cr0.90 ??~ 1.20, V 0.15 ~ 0.30.12Cr1MoV chemical composition of: C: 0.07 ~ 0.15, Si: 0.18 ~ 0.37, Mn: 0.41 ~ 0.70, Cr: 0.90 ~ 1.20, Mo: 0.25 ~ 0.35, V: 0.15 ~ 0.30 9948 thick-walled steel pipe _ _ thick-walled steel pipe industry by virtue of virtue Pipe Industry Co., Liaocheng The company offers. Liaocheng virtue Pipe Co., Ltd. (www.meidegc.com) (www.meidegc.com) (www.mdwfg.com) (www.mdggc.com) strong, credible, Liaocheng in Shandong steel industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead virtue of Industry and you work into the brilliant, for a better future!