Production Process Of Square Tube

Thick-walled Square Tube by the production process: hot rolled seamless square tube,cold drawn seamless square tube,extruded seamless square tube and welded square tube.
Welded Square Tube is divided into:
(a) by technology – arc welding square pipe,ERW square tube (high-frequency, low frequency),gas welding square tube,square tube of furnace welding
(b) weld points – straight seam welded square tube,spiral welded square tube.

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