Q235B steel Click unclaimedQ235B steel pipe, is a strip coil as raw material, the temperature often extruded to automatically double wire double submerged arc welded steel pipe technology.Q235B steel pipe production process: raw materials is a strip coil, the temperature often extruded to automatically double wire double submerged arc welded steel pipe technology. That raw steel coil, wire, flux. Go through rigorous physical and chemical customized auto lamp mould testing before it is put. Strip head and tail docking, a single wire or twin-wire submerged arc welding, in the rolled steel by automatic submerged arc welding. Before forming the strip after flattening, cutting, trimming, planing, surface transport and to clean up the crimping process.

Using electrical contacts on both sides of pressure control conveyor cylinder pressure to ensure the smooth delivery of the strip. Using external control or internal control roller shape. Using weld gap control device to ensure that the weld gap to meet the welding requirements, diameter, volume and the wrong side of the weld gap have been strictly controlled. Within welding and soldering are used outside the Lincoln welding machine single-wire or twin-wire submerged arc welding, thereby obtaining a stable welding specifications. The weld line ultrasonic injury examination was to ensure 100% coverage of non-destructive testing spiral weld.

 Using air plasma cutting machine will cut a single tube. Cut into a single pipe, each batch of steel pipe head first three rigorous inspection system to ensure that the pipe process qualified, formally put into production. A continuous ultrasonic inspection mark the site of the weld through the manual ultrasonic and X-ray review. Tube butt weld where the strip and intersect with spiral weld small-joint, all through the X-ray television or film examination. Each pipe after hydrostatic test pressure radial seal. Test pressure and time by steel pipe pressure microcomputer detection device is strictly controlled. Test parameters are automatically printed record.Steel Pipe end machining, so that the end vertical slope altercation and accurate control of the blunt edge.

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