The difference between 3pe anti-corrosion steel pipe and 2pe anti-corrosion steel pipe is: there is no epoxy powder at the junction of 2pe anti-corrosion and steel pipe, there is epoxy powder at the junction of 3pe anti-corrosion and steel pipe, the thickness of 3pe anti-corrosion and 2pe anti-corro

Production Process(1) The raw materials are strip coil, welding wire, and flux. They must undergo strict physical and chemical inspections before being put into operation.(2) The head and tail of the strip steel are butted by single-wire or double-wire submerged arc welding, and automatic submerged

In production practice, the steel pipe is often degraded by the wrong side and out of tolerance. Therefore, it is necessary to analyze the reasons for the misalignment of the spiral steel pipe and its preventive measures. The camber bend of the steel strip is the most important factor causing the mi

The spiral steel pipe feeds the strip into the welded pipe unit. After rolling by multiple rollers, the strip is gradually rolled up to form a circular tube blank with an opening gap. 3mm, and make both ends of the welding joint flush.1. If the gap is too large, the proximity effect will be reduced,