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盛仕达钢铁股份有限公司

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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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  • Steel pipe dimensions & sizes chart

    Steel pipe dimensions & sizes chart

    Steel Pipe Dimension 3 Characters: A completely description for steel pipe dimension includes outer diameter (OD), wall thickness (WT), pipe length (Normally 20 ft 6 meter, or 40 ft 12 meters). Through these characters we could calculate the pipe weight, how much pressure pipe could bear, and the...
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  • Technical problems of heat treatment of welding seam of welded pipe

    Technical problems of heat treatment of welding seam of welded pipe

    The welding process of high-frequency welded steel pipe (erw) is carried out under the condition of fast heating rate and high cooling rate. The rapid temperature change causes a certain welding stress, and the structure of the weld also changes. The structure in the welding center area along the...
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  • The importance of non-destructive testing of seamless pipes

    The importance of non-destructive testing of seamless pipes

    In the production process of seamless steel pipes, flaw detection of seamless steel pipes plays an important role, not only to detect whether the seamless steel pipes have quality defects, but also to test the appearance, size and material of the steel pipes. By applying a single non-destructive ...
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  • Quenching and tempering treatment of seamless steel pipe

    Quenching and tempering treatment of seamless steel pipe

    After the quenching and tempering treatment of seamless pipes, the parts produced have good comprehensive mechanical properties and are widely used in various important structural parts, especially those connecting rods, bolts, gears and shafts that work under alternating loads. But the surface h...
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  • What are the common uses of seamless steel tubes?

    What are the common uses of seamless steel tubes?

    The seamless tube is formed in one piece, directly pierced from round steel, without welds on the surface, and has a wide range of applications. Because of the special processing of seamless steel tubes, carbon structural steel, low alloy structural steel, etc. are generally used for production, ...
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  • Casing & tubing pressure rating

    Casing & tubing pressure rating

    Casing pressure rating Out diameter mm Inner diameter  mm Internal pressure strength  Mpa External collapse strength  Mpa Internal volume L/m 73.03 62.0 72.9 76.9 3.02 88.9 76.0 70.1 72.6 4.54     Tubing pressure rating Out diameter  mm Inner diameter  mm Internal pressure ...
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  • Application of seamless steel pipe in construction industry

    Application of seamless steel pipe in construction industry

    Among the many pipeline materials, the most practical one is seamless pipe (SMLS), which is a relatively powerful pipeline material, not only because of the wide range of application fields and scope of this pipeline material, but more importantly, Because the quality of seamless steel pipe is ve...
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  • Resistance welding method

    Resistance welding method

    There are many types of electric resistance welding(erw), and there are three types of welding, seam welding, butt welding and projection welding. First, spot welding Spot welding is a method of electric resistance welding in which a weldment is assembled into a lap joint and pressed between two ...
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  • Quality inspection method of spiral pipe

    Quality inspection method of spiral pipe

    The quality inspection method of spiral pipe (ssaw) is as follows:   1. Judging from the surface, that is, in visual inspection. Visual inspection of welded joints is a simple procedure with various inspection methods and is an important part of finished product inspection, mainly to find welding...
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  • Seamless tube eddy current flaw detection

    Seamless tube eddy current flaw detection

    Eddy current flaw detection is a flaw detection method that uses the principle of electromagnetic induction to detect surface defects of components and metal materials. The detection method is the detection coil and its classification and the structure of the detection coil.   The advantages...
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  • Corrosion in drilling pipe

    Corrosion in drilling pipe

    What is the main difference between corrosion fatigue fracture and stress corrosion fracture of drill pipe? I. Crack initiation and expansion: Stress corrosion cracks and corrosion fatigue cracks are all sent to the surface of the material. Under strong corrosive media and large stress conditions...
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