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  • Characteristics of Hollow Section When Roll Forming

    Date:2016-07-07      View(s):1114      Tag:cold-formed steel,cold-formed rectangular, hollow section

    Cold-formed steel, cold-formed rectangular tube through the one-way roller contacts the outer tube forming the outer wall so that the strip bending moment, bending line will produce cold-formed compression....

  • Special Demands of Galvanized Steel Pipe Production Line

    Date:2016-07-05      View(s):1058      Tag:galvanized steel pipe production, galvanized steel pipe supplier

    The galvanized steel pipe production lines have special requirements, especially for the production environment....

  • The Best Welding Way for Weld Steel Pipe

    Date:2016-07-04      View(s):1222      Tag:API 5L line pipe, ERW steel pipe, LSAW steel pipe

    The best way to welding steel pipe: First of all, cleaning the oil, paint, water, rust ect. on welded steel pipe weld. ...

  • Production Process of Seamless Steel Pipe

    Date:2016-07-02      View(s):1126      Tag:production process of seamless steel pipe, seamless steel pipe supplier

    Seamless steel pipe mainly complete through the tension reducing diameter. The stretch reducing process is hollow base material without mandrel continuous rolling process. ...

  • Heat Treatment of LSAW Steel Pipe

    Date:2016-07-01      View(s):1146      Tag:heat treatment, welding pipe, LSAW steel pipe

    Post weld heat treatment can effectively reduce the welding residual stress, and heat treatment temperature is higher, residual stress better....

  • Seamless Tee Manufacturing Method : Hot-drawing Forming

    Date:2016-06-21      View(s):1134      Tag:hot-drawing forming, seamless tee, pipe tee

    Applied to Tees with large diameters, heavy wall thickness and/or special material with challenging workability that cannot be manufactured using the hydraulic bulge method. ...

  • Line Pipe Production Status in China

    Date:2016-06-15      View(s):1464      Tag:line pipe supplier, line pipe manufacturer, API 5L line pipe

    Welded line pipe can be distinguished into three production process which are resistance welding, spiral submerged arc welding, longitudinal submerged arc welding. ...

  • Welding Technology for producing ERW steel pipe

    Date:2016-06-05      View(s):1040      Tag:welding technolgoy, electric resistance welding, electric resistance welding technology

    Few technical control methods to maintain the quality of the pipe and high efficiency of the production process. ...

  • High Frequency Resistance Welded Steel Pipe Units

    Date:2016-06-04      View(s):1045      Tag:ERW steel pipe, ERW steel pipe production line, ERW steel pipe proudction units

    Brief introduction of our high frequency resistance welded pipe mill facility and technical parameters....

  • The cause analysis for thick wall LSAW steel pipe weld fusion clamp slag

    Date:2016-06-02      View(s):1062      Tag:LSAW steel pipe, thick wall LSAW steel pipe, thick-wall LSAW steel pipe

    Submerged arc welding seam slag is produced mainly due to 1. raw materials inclusions (including base metal, wire, flux) 2. the multilayer welding interlayer is not clean up 3. improper selection of welding parameters is not conductive to slag floats....

  • Electric Resistance Welding Process and Quality Control

    Date:2016-05-30      View(s):984      Tag:electric resistance welding, resistance welding process, resistance welding technology

    The electric resistance welding time is short and the process is not visible, so during the actual welding process, there will be joint quality of instability caused by the instantaneous voltage fluctuations, current shunt, electrode wear and other factors....

  • Seamless Welding

    Date:2016-05-28      View(s):1112      Tag:seamless welding, seamless pipe, seamless steel pipe

    Seamless welding may be employed depending on the type of gas, gas welding specific situation, there is used a shielding gas carbon dioxide, argon, helium, hydrogen, and mixed gases....

  • Ultrasonic Testing

    Date:2016-05-27      View(s):1078      Tag:ultrasonic testing, ultrasonic testing for steel pipe

    Using ultrasonic testing to detect the quality of seamless steel pipe can be done defects (corrosion, cracks, pits, etc.) is detected without damaging the pipe. ...

  • Magnetic of Carbon Steel Pipe

    Date:2016-05-24      View(s):1352      Tag:carbon steel pipe, carbon steel pipe manufacturer, cabron steel pipe factory

    When the gas pipeline construction and repair welding operations, sometimes magnetic blow phenomena affect the welding process. Forming a magnetic blow is the result of the presence of residual magnetism in the pipe metal. ...

  • The quality of ERW steel pipe can be affected by the welding process

    Date:2016-05-23      View(s):1167      Tag:ERW carbon steel pipes, ERW steel pipe manufacturer, ERW steel pipe exporter

    During the high frequency welding process, the welding technology, quality control process parameters, the impedance of the induction coil and the position of the placement has significant influence on the ERW steel pipe quality....

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