Industrial News

  • Technical characteristics of double-sided submerged arc welding spiral steel pipe

    Technical characteristics of double-sided submerged arc welding spiral steel pipe

    1. During the forming process of the steel pipe, the steel plate deforms evenly, the residual stress is small, and the surface does not produce scratches. The processed steel pipe has greater flexibility in the size range of steel pipes with the diameter and wall thickness, especially in the prod...
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  • Heat treatment technology of oil casing

    Heat treatment technology of oil casing

    After the oil casing adopts this heat treatment method, it can effectively improve the impact toughness, tensile strength, and anti-destructive performance of the oil casing, ensuring good value in use. Petroleum casing is a necessary pipe material for drilling oil and natural gas, and it needs t...
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  • Annealing And Quenching of Cold Drawn Steel Pipe

    Annealing And Quenching of Cold Drawn Steel Pipe

    Annealing of cold drawn steel pipe: refers to metal material heated to the appropriate temperature, maintained a certain time, and then slowly cooled heat treatment process.Common annealing process: recrystallization annealing, stress annealing, spheroidizing annealing, complete annealing, etc.An...
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  • Delivery Length of Stainless Steel Pipe

    Delivery Length of Stainless Steel Pipe

    The delivery length of stainless steel pipe is also called the length requested by the user or the length of the contract. There are several rules for delivery length in the specification: A. Normal length (also known as non-fixed length): Any stainless steel pipe whose length is within the lengt...
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  • Stainless Steel Pipe Process Types and Surface Condition

    Stainless Steel Pipe Process Types and Surface Condition

    Process Type Surface Condition HFD: Hot Finished, heat treated, descaled Metallically Clean CFD: Cold Finished, heat treated, descaled Metallically Clean CFA: Cold finished bright annealed Metallically Bright CFG: Cold finished, heat treated, ground Metallically bright-ground, and the ...
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  • Stainless Steel Pipe 316 Schedule 80S Dimension

    Stainless Steel Pipe 316 Schedule 80S Dimension

    316-125-405-80S 1/8 inches 0.405 inches10.287 mm 0.095 inches2.4130 mm 0.315 lbs/ft0.46877166 kg/m 316-250-540-80S 1/4 inches 0.54 inches13.716 mm 0.119 inches3.0226 mm 0.535 lbs/ft0.79616774 kg/m 316-375-675-80S 3/8 inches 0.675 inches17.145 mm 0.126 inches3.2004 mm 0.739 lbs/ft1.09...
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  • Alloy Steel Classification and Application

    Alloy Steel Classification and Application

    Under normal circumstances, there are only two forms of steel plates, flat or rectangular. Rolled or wider steel strips can be cut to form new steel plates. There are many types of steel plates. If they are divided according to the thickness of the steel plate, there will be thickness. Thin steel...
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  • Different Types Oil Casing Pipe Used in Oil Exploitation

    Different Types Oil Casing Pipe Used in Oil Exploitation

    Different types of oil casings are used in the process of oil exploitation: surface oil casings protect the well from shallow water and gas pollution, support wellhead equipment and maintain the weight of other layers of casings. The technical oil casing separates the pressure of different layers...
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  • API 5CT Oil Casing Development and Types Classification

    API 5CT Oil Casing Development and Types Classification

    After nearly 20 years of efforts, China’s oil casing production from scratch, from low price to high price, from low steel grade to API series products, and then to non API products with special requirements, from quantity to quality, they are close to the level of foreign oil and casing pr...
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  • What are the factors affect flanges price?Let’s look

    What are the factors affect flanges price?Let’s look

    Factors influencing flange price: flange material In whole, the materials that can be produced are cast iron, carbon steel, alloy steel, stainless steel, etc. The price of different materials is different, they will rise and fall with the price of steel in the market. After the change, the price ...
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  • 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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