According to the molding angle adjustment,it can be divided into tilting ago and after tilting;According to the molding machine feeding method,it can be divided into on a roll and the next roll; (the next roll is more commonly used on the roll is only used on special occasions)According to the molding machine molding methods,it can be divided into: under the roll forming machine trundle bed, full sleeve of the sliding friction forming machine, roll joint forming machine, invented by the rolling friction China Conveyor Idlers Manufacturers of the roller forming machine, and the United States PRD production continuously adjustable tube Trail PRD molding machine.
Therefore, smaller diameter mild steel pipe mostly straight seam welded pipe of large diameter are mostly spiral welded.Spiral Welded Pipe Equipment. Spiral welded structural steel pipe equipment used for the production of spiral welded pipe equipment. The strength of the spiral welded pipe is generally higher than the Longitudinal, can narrow the billet production of large diameter pipe, you can also use the same width of the billet production of different diameters of pipe. However, compared with the same length of straight seam pipe, the weld length increased by 30 to 100%, and lower production rate. Spiral welded structural steel pipe equipment used for the production of spiral welded pipe equipment.(Now Universal is rolling friction of the roller forming machine)Spiral pipe features.
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