Spiral welded pipe production line(Φ406-Φ1422mm)
Spiral shaped,double–submerged arc welding pipe production lines (Spiral Weld Pipe Mills Φ219mm-Φ3500mm )are the most important products of the HAOKUN company. After many years of exploration and constant improvement,our pipe welding techniques,equipment and technologies have been the leading position of the dometic industry.
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