Notices for ERW carbon steel pipe in winter:
ERW carbon steel pipe
Firstly, increase welding current, slow down welding speed, properly increase cross-section area and length of positioning, and preheat if necessary.
Secondly, the slope should not be in addition to the arc-shaped foundation materials, arc filling needs to fill the crater.
Thirdly, bending, calibration and assembly of welded parts should be carried out as far as possible at low temperature.
Fourth, preheating before welding, the welding process should strictly maintain the interlayer temperature should not be lower than the preheating temperature.
5. Use low or ultra-low hydrogen welding materials.
Sixth, the whole weld should be continuously welded to avoid interruption.


According to the specific temperature regulation of pipeline thickness, the actual operation is applied.