Spiral steel pipe is a spiral seam steel pipe made of strip steel coil as raw material, extruded at regular temperature, and welded by automatic double-wire double-sided submerged arc welding process. The spiral steel pipe sends the strip steel into the welded pipe unit, and the strip steel is rolled up gradually after rolling by multiple rollers to form a circular tube billet with an opening gap. Adjust the reduction of the extrusion roller to control the weld gap at 1-3mm, and make both ends of the welding port flush.
The coating of 3PE anticorrosive steel pipe is an epoxy powder anticorrosive coating which is in contact with the surface of the steel pipe...
Hot dip galvanized pipe is to make the molten metal and iron matrix reaction and produce an alloy layer, so that the matrix and...
The principle requirements of spiral steel pipe stacking are to stack according to varieties and specifications on the...
