In addition, the circular part of the internal or external radial pressure, pressure is relatively uniform, therefore, the vast majority of steel pipe is a tube.(3) ConnectionWelding process occurs welding deformation and welding stress and other shortcomings, structural cracks or brittle cracking risk. In addition, Taiyuan, the open structure of seamless steel pipe is easy to aging, should be differentiated selection of different raw materials. Models 338, 339 for Refrigerant Bottle Opener Steel and round steel and other solid steel, bending torsional strength, lighter weight, is an economic section steel, widely used in the production of structural and mechanical parts, such as oil drill pipe, r134a refrigerant price drive shaft, bicycle frame and construction steel Scaffolding work, and so on.(4) The ambient temperature and structure, Taiyuan Seamless Steel Tube in the low temperature cold and crisp, simple structure, low temperature operation, welding structure, in particular, should be used with excellent low temperature brittle fracture function of killed steel. Therefore, the thickness of the welded structure should choose a good material of carbon seamless steel pipe.Steel pipe according to the cross-sectional shape of the different can be divided into tube and shaped tube. Steel ring sections, which can be used to simplify information on the progress of the production process, save data and processing time, such as rolling bearing rings, jackets, steel pipes are widely used in manufacturing. Steel pipes have a hollow cross-section, and many pipes are used to transport liquids such as petroleum, natural gas, gas, water and some solid materials such as pipelines. Because the circumference of the plane under the conditions, the largest circular area, with a circular tube can transport more liquid.(5) The thickness of seamless steel tubes, thin roll more seamless steel pipe, rolling deflation than large, large thickness Taiyuan seamless steel pipe deflation ratio is small, so the thickness of thin steel pipe is not only very small, and plasticity, impact toughness and welding function Also poor.(2) Load conditionsDirect structural dynamic loading and strong seismic structure of the region should be selected to sense the function of good Taiyuan seamless steel pipe; usually accepted static load structure is optional Taiyuan seamless steel pipe prices are low.Element of the raw material(1) The main structureTaiyuan that should be used in high-quality seamless steel pipe, industrial and civil construction, usually can choose according to the nature of the work is usually separated from the quality of Taiyuan, the quality of seamless steel pipe is often the same as the structure of the structure of large- 1].Carbon steel seamless steel pipe is a strip. Steel pipe is a variety of conventional weapons is not lack of material, steel pipe, so that guns, barrels, etc. Therefore, the demand for raw materials should be a severe welding structure.