Industrial News

  • Seamless Steel Pipes Commonly NDT Methods

    Seamless Steel Pipes Commonly NDT Methods

    1. seamless steel tube magnetic particle testing (MT) or magnetic flux leakage testing (EMI) The detection principle is based on the ferromagnetic material is magnetized in a magnetic field, the discontinuity of the materials or products (defect), magnetic flux leakage, magnet powder adsorption (...
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  • Galvanized steel size SC and the difference DN

    Galvanized steel size SC and the difference DN

    The difference between the size of SC and DN of galvanized steel pipe: 1.SC generally refers to the welded steel pipe , the language STEEL CONDUIT, is a shorthand for the material. 2. DN refers to the nominal diameter of the galvanized steel pipe , which is the pipe diameter indication of the pip...
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  • How to deal with stainless steel rust spots?

    How to deal with stainless steel rust spots?

    About stainless steel rust spot we can start from two points of view of physics and chemistry. Chemical process: After pickling, it is very important to wash properly with clean water in order to remove all contaminants and acid residues. After all processing with polishing equipment polishing, p...
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  • Difference between hot rolled and cold drawn steel tube

    Difference between hot rolled and cold drawn steel tube

    Why is cold drawn steel tube is usually more expensive than the hot rolled? Have you ever thought of their difference? The outer diameter and wall thickness of the hot-rolled seamless steel tube is changing. The outer diameter is larger on one end and smaller on the other hand. The outer diameter...
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  • Non-destructive Testing of Straight Seam Steel Surface

    Non-destructive Testing of Straight Seam Steel Surface

    Surface NDT methods of straight seam steel selection principles: magnetic iron pipe should be used in magnetic particle testing; non-ferromagnetic steel should be used in penetration testing. Delayed cracking tendency of welded joints, the surface should be non-destructive testing after welding c...
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  • What Standards Referred to Carbon Steel Plates?

    What Standards Referred to Carbon Steel Plates?

    Carbon steel plates almost include all the common standards of steel plate/sheet.  1. ASTM A36 Standard ASTM A36 Standards are the most common standards of carbon steel plate. 2. ASTM A283 Grade A, B, C Standard It is also the most common material in the carbon structure. 3. ASTM A516 Standard AS...
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  • Measuring method of end cut of steel pipe

    Measuring method of end cut of steel pipe

    At present, the measurement methods of pipe end cut in the Industry mainly include straightedge measurement, vertical measurement, and special platform measurement.  1.Square measurement A square ruler used to measure the cut slope of the pipe end generally has two legs. One leg is about 300mm i...
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  • Why is stainless steel not easy to corrode?

    Why is stainless steel not easy to corrode?

    1. Stainless steel does not rust, it also generates an oxide on the surface. The rust-free mechanism of all stainless steels currently on the market is due to the presence of Cr. The fundamental reason for the corrosion resistance of stainless steel is the passive film theory. The so-called passi...
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  • Common pipe fittings

    Common pipe fittings

    There are many types of pipe fittings, which are classified according to their use, connection, materials, and processing methods. By purpose 1. Pipe fittings for connecting pipes are: flange, joint, pipe clamp, ferrule, hose clamp, etc. 2, change the pipe direction of the pipe: elbow, elbow ...
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  • What should be done on the surface of high-frequency anti-corrosion spiral steel pipe?

    What should be done on the surface of high-frequency anti-corrosion spiral steel pipe?

    With the continuous development of China’s economy, the country vigorously develops the energy industry. Pipeline long-distance oil and gas pipelines are an important way of energy security. In the anti-corrosion construction process of oil (gas) pipelines, the surface treatment of anti-cor...
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  • How to deal with the revers of spiral steel pipe

    How to deal with the revers of spiral steel pipe

    How to deal with the revers of spiral steel pipe Along a straight line or curve or flat portion of the curved portion of sheet metal bent into upstanding flange stamping method. Flanging type:According to the nature of the deformation, it can be divided into elongated cuffs and compression type f...
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  • NDT Testing

    NDT Testing

    NDT testing means without prejudice or affect the detected object performance, not hurt at being provided to detect objects within the organization, the use of material internal structural abnormalities or defects heat, sound, light, electricity, magnetism and other reactions caused by changes to...
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