Spiral steel pipe factory supplies fluid transportation spiral pipe welding seam treatment method

直径：

219-3620mm

壁厚：

6-30mm

材质：

Q235B

Spiral steel pipe factory supplies fluid transportation spiral pipe weld seam treatment
Method
Weld seam treatment Spiral steel pipe The strip is fed into the welded pipe unit, and after being rolled by multiple rollers, the strip is gradually rolled up to form an opening gap For the round pipe blank, adjust the reduction amount of the extrusion roller to control the weld gap at ~ and make both ends of the weld flush.
If the gap is too large, the proximity effect will be reduced, the eddy current heat will be insufficient, and the inter-crystal bonding of the weld will be poor, resulting in lack of fusion or cracking.
If the gap is too small, the proximity effect will increase and the welding heat will be too high, causing the weld to be burned or the weld to form a deep pit after being extruded and rolled, affecting the surface quality of the weld.