SHINESTAR STEEL GROUP CO., LTD

盛仕达钢铁股份有限公司

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  • Surface processing defects of seamless tubes and their prevention

    Surface processing defects of seamless tubes and their prevention

    Surface processing of seamless tubes (smls) mainly includes: steel tube surface shot peening, overall surface grinding and mechanical processing. Its purpose is to further improve the surface quality or dimensional accuracy of steel tubes. Shot peening on the surface of seamless tube: Shot peenin...
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  • Factors affecting the quality of seamless tubes

    Factors affecting the quality of seamless tubes

    There are two categories of factors that affect the quality of seamless tubes: steel quality and rolling process factors. Many factors of the rolling process are discussed here. The main influencing factors are: temperature, process adjustment, tool quality, process cooling and lubrication, remov...
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  • How to control the defects on the inner surface of seamless tube?

    How to control the defects on the inner surface of seamless tube?

    The scarring defect in the hot continuous rolling seamless tube exists on the inner surface of the steel pipe, which is similar to the pit of the size of a soybean grain. Most of the scars have gray-brown or gray-black foreign matter. The influencing factors of internal scarring include: deoxidiz...
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  • Warehousing inspection and loading and unloading of anti-corrosion spiral steel pipes

    Warehousing inspection and loading and unloading of anti-corrosion spiral steel pipes

    Everyone knows that when we transport all kinds of things, we need to check carefully, especially large-scale materials, which need to be checked two or three times before entering or leaving the warehouse. So how should the anti-corrosion spiral steel pipe be checked when entering and leaving th...
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  • Causes and measures of uneven wall thickness of seamless tubes

    Causes and measures of uneven wall thickness of seamless tubes

    The uneven wall thickness of the seamless tube(SMLS) is mainly manifested in the phenomenon of uneven wall thickness of the spiral shape, uneven wall thickness of the straight line, and thicker and thinner walls at the head and tail. The influence of continuous rolling process adjustment of seaml...
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  • How to enhance the stability of spiral steel pipe?

    How to enhance the stability of spiral steel pipe?

    Spiral welded pipe (ssaw) is a kind of steel pipe that combines low-carbon and environmentally friendly alloy structural steel and low-alloy structural characteristics into pipe material and electric welding. How can the reliability of the spiral pipe be improved in the process of adoption? When ...
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  • Flattening test of seamless steel pipe

    Flattening test of seamless steel pipe

    The production process of seamless steel pipes is relatively cumbersome and rigorous. After the seamless steel pipe is produced, certain tests must be carried out. Do you know the flattening test method and steps of the seamless steel pipe? 1) Flatten the sample: 1. The sample is cut from any par...
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  • Weld leveling of straight seam steel pipe

    Weld leveling of straight seam steel pipe

    Weld leveling of straight seam steel pipe (lsaw/erw): Due to the impact of the welding current and the influence of gravity, the internal weld of the pipe will protrude, and the external weld will also sag. If these problems are used in an ordinary low-pressure fluid environment, they will not be...
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  • Low carbon steel tubing with seamless

    Low carbon steel tubing with seamless

    Features: 1. Low carbon steel tubing with seamless is a carbon steel with a carbon content of less than 0.25%. It is also called mild steel because of its low strength, low hardness and softness. 2. The annealed structure of low carbon steel tubing with seamless is ferrite and a small amount of p...
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  • DETECTION OF SURFACE DEFECTS OF SQUARE AND RECTANGULAR TUBES

    DETECTION OF SURFACE DEFECTS OF SQUARE AND RECTANGULAR TUBES

    There are five main methods for detecting surface defects of square and rectangular tubes:   1. Eddy current inspection   Eddy current testing includes basic eddy current testing, far-field eddy current testing, multi-frequency eddy current testing, and single-pulse eddy current testing...
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  • Seamless elbow forming

    Seamless elbow forming

    A seamless elbow is a type of pipe used for turning a pipe. Among all the pipe fittings used in the pipeline system, the proportion is the largest, about 80%. Generally, different forming processes are selected for elbows of different material wall thicknesses. Currently. Seamless elbow forming p...
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  • Short joint welding of oil casing

    Short joint welding of oil casing

    The oil casing is short joint, causing this phenomenon due to internal mechanical failures such as roller or shaft eccentricity, or excessive welding power, or other reasons. As the welding speed increases, the tube blank extrusion speed increases. This facilitates the extrusion of the liquid met...
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