• Oil casing folding defect solution

    Sleeve in the production of prone to folding defects, affecting the improvement of product quality, need to be controlled....

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    Date:2018-02-24      View:14      Tag:Oil casing folding defect solution

  • Improvement measures of wall thickness precision of seamless steel pipe

    Seamless steel pipe wall thickness control is the production of steel pipe difficult to improve the precision of seamless steel pipe wall thickness Production measures include the following aspects: 1, tube heating...

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    Date:2018-02-24      View:20      Tag:Improvement measures of wall thickness precision of seamless steel pipe

  • Seamless thick-walled pipe uneven

    Seamless thick-walled pipe uneven 1, in the seamless steel pipe perforation process, the extension coefficient is too large, the rolling speed is too high, smooth rolling....

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    Date:2018-02-24      View:10      Tag:Seamless thick-walled pipe uneven

  • Casing and Tubing Core Manufacturing Technology

    Core Manufacturing Technology The core manufacturing technologies for casing and tubing are as follows: ...

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    Date:2018-02-24      View:10      Tag:Casing and Tubing Core Manufacturing Technology

  • Special requirements of galvanized steel pipe production line

    For galvanized steel pipe production line has special requirements, especially in the production environment, a good environment can help us better production, improve production quality and production efficiency, especially galvanized steel, the need for a stable environment is even more so....

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    Date:2018-02-24      View:11      Tag:Special requirements of galvanized steel pipe production line

  • Seamless Steel tube Concrete

    In order to understand the quality and quality of cement concrete and pipe wall of seamless concrete filled steel tubular pump, ultrasonic pulse method was used to inspect and identify the quality of the main concrete filled steel tube....

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    Date:2018-02-24      View:11      Tag:Seamless Steel tube Concrete

  • Spiral Steel Pipe Weld Process

    Spiral pipe (spiral submerged arc welded pipe) into a steel unit, multi-roll rolled strip gradually rolled up to form a gap opening pipe, squeeze roll reset adjustment, in 1 ~ 3mm, weld gap control and welding end of the rinse . 1. If the gap is too large, resulting in reduced proximity effect, lack of eddy current, poor weld crystallization, indi...

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    Date:2018-02-23      View:111      Tag:Spiral Steel Pipe Weld Process

  • Types of seamless steel pipe corrosion

    The so-called macro-cell corrosion, refers to the galvanic action, refers to the pipeline by a few centimeters far or even a few meters of corrosion caused by the anode and cathode areas. Macro battery corrosion, also known as local corrosion. The corrosion rate of macro cells is related to the soil resistivity except for the anode and cathode el...

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    Date:2018-02-23      View:98      Tag:Types of seamless steel pipe corrosion

  • How to Handle the Seamless Steel Pipe Fracture

    Domestic high-precision seamless steel pipe generally increases the performance of the material by adding ways. After the metal-alloy and seamless steel pipe are cold-drawn, stress relief annealing is needed to eliminate the residual stress of the material, improve the structure of the material and improve the plasticity of the material so as to ac...

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    Date:2018-02-23      View:97      Tag:How to Handle the Seamless Steel Pipe Fracture

  • Hydrostatic test methods and procedures for longitudinal welded pipes

    Large diameter LSAW steel pipe hydraulic pressure test machine pressure test, the first seal through the test straight seam steel pipe in the exhaust pipe through the exhaust valve filling the two ends of the filling process and low pressure water seal, water After the full low-pressure, high-pressure water jet device through the booster tube to ...

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    Date:2018-02-23      View:102      Tag:Hydrostatic test methods and procedures for longitudinal welded pipes

  • Spiral submerged arc welding pipe production notes

    Spiral submerged arc welded pipe in the production process, we need to pay attention to a series of problems. In addition to the following test items, according to API standards and other relevant standards and some special requirements of users, but also need to destructive testing of steel pipe, steel pipe, etc., including physical and chemical p...

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    Date:2018-02-23      View:95      Tag:Spiral submerged arc welding pipe production notes

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