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  • Straight seam steel pipe diameter expansion technology and common detection methods

    Straight seam steel pipe diameter expansion technology and common detection methods

    Expanding technology of straight seam steel pipe: 1. Preliminary rounding stage: the fan-shaped blocks are opened until all the fan-shaped blocks touch the inner wall of the steel pipe. At this time, the radius of each point in the inner tube of the steel pipe within the step ...
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  • Submerged arc steel pipes high-frequency welding process

    Submerged arc steel pipes high-frequency welding process

    1. The control of the weld gap: the strip steel is sent to the welded pipe unit after rolling by multiple rollers. The strip steel is gradually rolled up to form a circular tube blank with an opening gap. Adjust the reduction of the extrusion roller to control the gap between ...
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  • Tips to identify fake and inferior steel pipes

    Tips to identify fake and inferior steel pipes

    Shoddy steel pipes are prone to folding. Folding is a variety of fold lines formed on the surface of the steel pipe, and this defect often runs through the longitudinal direction of the entire product. The reason for the folds is that the counterfeit and inferior manufacturers...
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  • Treatment measures for common problems in pre-welding of straight seam steel pipes

    Treatment measures for common problems in pre-welding of straight seam steel pipes

    1. Wrong side. This is a common problem in pre-welding, and the wrong side is out of tolerance, which directly leads to the degradation or scrapping of the straight seam steel pipe. Therefore, it is required to strictly control the misalignment amount during pre-welding. When ...
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  • The continuous rolling process of straight seam steel pipe

    The continuous rolling process of straight seam steel pipe

    The continuous rolling process of straight seam steel pipe: the continuous rolling process of straight seam steel pipe, continuous rolling process is used in the continuous rolling and fixed diameter reduction process of steel pipe. Continuous steel pipe rolling is a process i...
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  • Several common anti-corrosion processes for spiral steel pipes anticorrosion

    Several common anti-corrosion processes for spiral steel pipes anticorrosion

    Anti-corrosion spiral steel pipe plays an important and different role in people’s daily life. Anti-corrosion spiral steel pipe generally refers to the use of special technology to treat ordinary spiral steel pipe with anti-corrosion treatment, so that the spiral steel p...
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  • What are the detection methods of oil casing

    What are the detection methods of oil casing

    Oil casing is a high-end product produced by steel pipes. There are many types of casings, and there are many varieties and requirements for casing end buckle types. The machinable buckle types include STC, LC, BC, VAM, and other buckle types. The production and installation p...
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  • Some Tips for Preventing Steel Pipeline Corrosion

    Some Tips for Preventing Steel Pipeline Corrosion

    Corrosion of pipes occurs because metals are sometimes susceptible to chemical reactions that weaken them. Once the metal is weakened, it is prone to rust and can form cracks and holes, which is a big problem. Corrosion protection for pipes is therefore critical, not least bec...
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  • How to correctly judge the thickness of stainless steel welded pipe

    How to correctly judge the thickness of stainless steel welded pipe

    How to correctly judge the thickness of the stainless steel welded pipe refers to the wall thickness of the pipe. Tell everyone that the wall thickness of the stainless steel welded pipe will be attached to the pipe under normal circumstances. Customers can know the thickness ...
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