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Spiral steel pipe with double-sided submerged arc welding

Spiral steel pipe... Spiral steel pipe... Spiral steel pipe... Spiral steel pipe... Spiral steel pipe...

Prefabricated direct buried insulation pipe

Prefabricated... Prefabricated...

elbow

elbow elbow elbow

Fixed section

Fixed section Fixed section

Reducer

Reducer

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The company drafted the enterprise... The company passed API certification... The company passed the high-tech...

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How to deal with the surface... Insulation treatment of anticorrosive... How to determine the design... Coating development of anti-corrosion... Introduction of threaded pipe Prevention solution of the defect of... How to distinguish the thread on the... Steel mills stepped up their efforts... Spiral tube manufacturers are mainly... Analysis of the strength of spiral pipe

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