Therefore: submerged arc welding steel strip coil as raw material, often warm Jinqiao welding rod kneading molding, spiral automatic double wire submerged arc welding process double-sided welded pipe joints.

The characteristics of submerged arc welded steel pipe: welded pipe production process simple, low cost, high efficiency production, rapid growth. The spiral welded steel pipe Co. Ltd. of Liaocheng city Jia Bin the strength of ordinary than straight seam welded pipe is high, can use the material with narrow large diameter welded pipe production, can also use the same width of the billet is produced in different diameter pipe but with the same length of straight pipe, weld length of 30~100%, and the production rate is low. So, most of the small caliber pipe welded, large diameter welded pipe mostly using spiral welding.