High frequency attachment machine could be a strip as material, when uncoiling, molding, high frequency attachment, sizing, straightening, pruning a series of pipe forming method to supply complete sets of apparatus or a spread of circular steel tube steel pipe line.
Roll forming is employed to create the strip cold bending into spherical billet, and also the attachment seam is extruded to create spherical tube by high frequency heating. varied customary tubes and sq. tubes ar created when size.
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