Spiral Steel Pipe
ANSI/AWWA C104/A21.4 American National Standard for Cement-Mortar Lining for Ductile-Iron Pipe and Fittings for Water ISO 21809 Petroleum and natural gas industries -- External coatings for buried or submerged pipelines used in pipeline transportation systems DIN 30670 Polyethylene coatings of steel pipes and fittings
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Spiral Welded Steel Pipe Production Capacity
Tianjin Youfa Pipeline Technology Co.,Ltd
5 SSAW steel pipe production lines and other 13 steel pipe production lines
Handan Youfa Steel Pipe Co.,Ltd
4 spiral steel pipe production lines and other 41 steel pipe production lines
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