Guangdong square steel tube material?

Products Guangdong square pipe, a pipe and rectangular pipe call, that is, the side looks of the steel pipe. Is made of the strip after the treatment process volume. Generally strip After unpacking, flat, curled, welded to form a tube by tube rolled into a tube and then cut to required lengths. Generally 50 per package. F and J, the tube wall thickness allowable deviation shall not exceed the nominal wall thickness of plus or minus 10%, when the wall thickness is not greater than 10mm, also known as square and rectangular cold-formed hollow sections, code-named when the wall thickness is greater than 10mm when is plus or minus 8% wall thickness, wall thickness except for the corners and weld areas. 2, the usual delivery length 4000mm-12000mm, mostly to 6000mm and 12000mm. Rectangular tube allows delivery of not less than 2000mm short foot and non-Length products can also interface to pipe in the form of delivery, but the demand side, the tube should be used to interface resection. Short feet and the weight of the non-Length products does not exceed 5% of the total deliveries for the theoretical weight greater than 20kg / m of pipe should not exceed 10% of the total deliveries Rectangular Pipe 3 bending degrees per meter shall not be greater than 2mm total curvature shall not be greater than the total length of the product attributes by Material: carbon steel pipe, low-alloy tube. Carbon steel is divided into: Q195, Q215, Q235, SS400, 20 # steel, 45 # steel, etc.; low-alloy steel is divided into Q345, 16Mn, Q390, ST52-3 using methods Rectangular Pipe Production: hot-rolled seamless square tube, cold drawn seamless tubes, extruded seamless tube welded square tube. Welding square tube is divided into: (a) according to the process sub - arc welding square pipe, ERW square tube (high-frequency, low frequency), gas welding square tube, square tube furnace welding (b) weld points - straight The main purpose of the seam welded square tube, spiral welded square-use classification - decorative pipe, machine equipment, machinery and industrial use, chemical use, steel, shipbuilding, automotive, steel beams and columns with special purpose custody store square and rectangular tubing pipe, a form of address, that is, the side looks of the steel pipe. Is made of the strip after the treatment process volume. Generally strip After unpacking, smooth, curl by the tube rolling into square tube welded to form a tube, and then cut to required lengths. Generally 50 per package. Other company manufacturing small thick hot-rolled tubes, thick-walled seamless steel tubes, precision seamless steel tubes, seamless tubes, square tube mainly owned small, medium and large cold drawn precision seamless steel or cold rolled precision bright tube six production lines, roller hearth heat treatment furnace two ordinary cold drawn seamless steel pipe unit three sets, transaction description Negotiable Power Conference online trading