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

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

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

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