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Description: Categories：welded steel pipe
Product Name: welded steel pipe
Specification：Φ15-Φ200，wall thickness1-6mm， material Q235、Q345、X60 and so on.
products standard and used：GB/T3091-2001、GB/T9711.1-97、API Spec 5L and so on. Mainly used in transportation of the gas on terrestrial and ocean, coal and mineral serum, as well as the ocean flat, electric station, chemical and city construction.
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