Liangshan GB Rectangular Pipe - Rectangular Pipe Supply Contact: Ms. Wang: 15,231,769,008 15,350,795,317 office phone: 0317-3176004 QQ: 1058004145 company is a production and sales (galvanized) square and rectangular tubes, seamless square and rectangular tubes, welded pipe, galvanized seamless steel pipe manufacturers and shaped, materials are: Q235B square and rectangular tube, 16Mn (Q345B) Rectangular Pipe, 20 # seamless square and rectangular tube, shaped rectangular tube, produce specifications: square tube 20 * 20- 500 * 500 rectangular tube 20 * 30-600 * 800, thickness 1.5-35mm Our aim: "quality of survival, reputation and development." Our philosophy: "Sincerity-oriented, customer first." Our advantage: "adequate supply, reasonable prices and a horizontal pipe riser pipes are used as the main square, and interspersed with multi-assembled fence by the tube, such as 16 * 16mm or 19 * 19mm Yesterday, we learned about the recent variety. pipe market, which has improved the sales side of the tube, a relatively large number of traders turnover ratio increased scale, therefore, directly slowing the inventory of society. Let us introduce detailed information about the square tube. RHS is a low-carbon or low-alloy carbon steel structural steel strip by a certain helix angle. Its a gas pipeline in the common pipe, diameter greater than 426mm (or 508mm) square tubes are generally known as large-caliber square tube, according to the welded pipe system can be divided into two kinds of spiral and straight seam pipe spiral square tube is a low-carbon or low-alloy carbon steel structural steel strip at a certain angle rolled into a spiral tube then seam welded pipe is made, it can produce large diameter steel pipe with a narrow strip in the country are widely used in the construction of various gas pipeline, its specifications diameter * wall thickness, said. spiral single surface welding and double-sided welding, the pipe should ensure hydrostatic testing, tensile strength and cold bending properties of the weld to be in compliance. straight seam pipe is hot rolled coil After molding machine, so that the coil deformation for the smooth cylindrical shape using a high frequency current skin effect and proximity effect or solder layer under the burning arc welding, so that the edge of the tube is heated to melt, and at a certain compressive force under the action of fusion, after the final cooling molding which use high-frequency current to melt the tube edge is called high-frequency straight seam square tube (ERW), by arc melting is called straight seam submerged square tube (LSAW). It is the main raw material is low carbon steel hot-rolled coils, hot-rolled, in petroleum, metallurgy, construction, mining, port, machinery and other industries are widely used in oil and natural gas, low-pressure water gas transportation, mining fluid transport, conveyor idlers, automotive transmission and so on. My company's services: rather a promise not allowed, it is as good as gold production promises the best products, provide the most needy people, I was selling steel girl Wangshuang Xia, waiting for your call the company Web site:!! http: //www.cz -scg.net/