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  • [Industry News] Do you really know galvanized seamless pipe?

    The gray color blocks of different sizes on the surface of the galvanized seamless pipe are galvanized color difference, which is a problem in the galvanizing industry at present, which is mainly related to the trace elements contained in the steel pipe itself and the components in the zinc bath. Th

  • [Industry News] Production process of seamless steel pipe

    ①Main production process of hot-rolled seamless steel pipe (main inspection process):Tube billet preparation and inspection → tube billet heating → perforation → tube rolling → waste tube reheating → fixed (reduced) diameter → heat treatment → finished tube straightening → finishing → inspection (no

  • [Industry News] Hardness testing method of seamless steel pipe

    Seamless steel pipes are subject to mechanical performance testing. Seamless steel pipes are widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipes, automobile transmission shafts, bicycle frames, and steel scaffolding used in construction. Steel pipes are u

  • [Industry News] Knowledge of the diameter of the spiral tube

    Generally speaking, the diameter of spiral steel pipe can be divided into outer diameter, inner diameter, and nominal diameter. The outer diameter of a spiral steel pipe is indicated by the letter D, followed by the size and wall thickness of the outer diameter. For example, a seamless steel pipe wi

  • [Industry News] The importance of seamless steel pipes in real life

    Seamless steel pipe is a kind of hollow pipe material. Because the surface of this kind of pipe has no joints, it is called seamless steel pipe. This is because the process technology of this pipe material is very special when it is made. But in general, there are many specifications of seamless ste

  • [Industry News] The main process of seamless steel pipe

    Compared with solid steel such as round steel, steel pipe is generally lighter when the bending and torsion strength is the same. It is a kind of economical cross-section steel, which is widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipes, automobile tran

  • [Industry News] Seamless steel pipe classification(2)

    6. GB9948-1988 (seamless steel pipe for petroleum cracking). Mainly used in boilers, heat exchangers and fluid pipelines of petroleum smelters. Its representative materials are 20, 12CrMo, 1Cr5Mo, 1Cr19Ni11Nb, etc.7. Steel pipes for geological drilling (YB235-70) are steel pipes used for core drilli

  • [Industry News] Seamless steel pipe classification(1)

    Seamless steel pipes are divided into hot-rolled (extruded) seamless steel pipes and cold-drawn (rolled) seamless steel pipes due to their different manufacturing processes. Cold drawn (rolled) tubes are divided into round tubes and special-shaped tubes. Seamless steel pipes are divided into the fol

  • [Industry News] How to check the steel pipe

    (1) Geometric standard inspection of steel pipeThe outer diameter, wall thickness, curvature, and length of the steel pipe can be inspected on the inspection table with an external caliper, a micrometer, a bending ruler, and a length tape measure.Automatic standard testing equipment (such as automat

  • [Industry News] The mystery of stainless steel not rusting

    The "mystery" of stainless steel not rusting Michael L. Free, a metallurgical engineer at the University of Utah, provided an explanation for the "mystery" of stainless steel not rusting: the reason why stainless steel remains stainless or does not rust is due to the alloy elements and The chemical

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