Industry News

  • Classification and corrosion protection of oil casing

    Classification and corrosion protection of oil casing

    Petroleum casing can be roughly divided into one and surface casing according to different usage methods. 2. Intermediate casing. 3. Production of casing. 4. Drilling casing. The main purpose of surface casing is to suspend and support subsequent layers of casing through the c...
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  • Precautions for construction of plastic-coated steel pipes

    Precautions for construction of plastic-coated steel pipes

    1. Plastic-coated steel pipes are strictly prohibited from being thrown or violently impacted during transportation, loading and unloading, and construction on construction sites; 2. Plastic-coated steel pipes should not be buried in reinforced concrete structural layers; 3. T...
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  • The main production process of large diameter straight seam welded pipe

    The main production process of large diameter straight seam welded pipe

    1. Plate exploration: After the steel plate used to manufacture large-diameter submerged arc welded straight seam steel pipe enters the production line, the full plate ultrasonic inspection is first performed; 2. Edge milling: double-sided milling of the two edges of the steel...
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  • Method for preventing quenching cracks of medium and high carbon low alloy steel pipes

    Method for preventing quenching cracks of medium and high carbon low alloy steel pipes

    (A) If the entire steel pipe is cooled to the martensitic transformation stop temperature (Mf point) or lower by strong water quenching, quenching cracks will occur with high probability. (B) Since the cracks at the time of quenching cracking extend substantially in the axial ...
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  • How to install galvanized steel pipes

    How to install galvanized steel pipes

    First. According to the specific conditions of the diameter and pipeline, select the appropriate connection method 1. Welding: enter the installation at an appropriate time according to the progress of the site. Fix the bracket in advance, draw a sketch according to the actual...
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  • Comparison of reagents for straight seam steel pipes

    Comparison of reagents for straight seam steel pipes

    Straight seam steel pipe products are widely used in water supply engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, and urban construction. They are 20 key products developed in my country. Straight seam steel pipes are u...
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  • What should be done at the end of cooling large diameter steel pipes

    What should be done at the end of cooling large diameter steel pipes

    (1) When the cooling is completed, that is, when the temperatures of the surface layer and the core are all consistent, the elastic deformation of the surface layer and the core will also disappear and return to the original state. Although instantaneous thermal stress is gene...
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  • Fire steel pipe construction

    Fire steel pipe construction

    (1) When the steel pipes of the fire hydrant water supply system adopt hot-dip galvanized steel pipes on the inner and outer walls, welding should not be used. When the system pipeline adopts a non-corrosive inner wall pipeline, it can be connected by welding, but the pipeline...
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  • Steel structure maintenance and upkeep

    Steel structure maintenance and upkeep

    1. Regular rust and anti-corrosion protection. Generally, the designed service life of steel structures is 50-70 years. During the use of steel structures, the chance of being damaged due to overload is very small. Most steel structure damage is caused by corrosion that reduce...
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