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  • 2023-03-16

    The difference between square cold-formed hollow section steel and cold-drawn square steel pipe

    Square cold-formed hollow section steel is a section steel with square cross-section shape and size made of hot-rolled steel plate after cold-bending and then high-frequency welding. It is also called welded square steel pipe. The section steel has a stable production process and high precision, and

  • 2023-03-07

    What are the temperature control of the straight seam welded pipe unit

    The straight seam welded pipe unit sends the strip steel into the welded pipe unit, and after rolling by multiple rollers, the strip steel is gradually rolled up to form a round tube billet with an opening gap. Adjust the reduction of the extrusion roller to control the weld seam gap at 1~3mm, and m

  • 2023-02-20

    Interpretation of maintenance and maintenance of high frequency welded pipe mill

    First of all: in the process of use, we must strictly operate in accordance with the operating procedures in the instruction manual, let alone overload the machine and use it, and before complaining about the production, that is, the operation of the machine, we must check all aspects of the machine

  • 2023-02-17

    BYD - China's largest brand of new energy vehicles

    BYD - China's largest brand of new energy vehiclesAccording to the sales data in 2022, more than 1.86 million new cars were sold in the whole year, and the cumulative export volume reached 55,916 units, a year-on-year increase of more than 300%.Its battery technology is an international leader.TENGD

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