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hot rolled steel pipes
Specifications
1.OD:33.4mm-609.6mm
2.Wall thickness:2.5mm-75mm
Manufacturing process:
Hot rolling → heating → piercing → three roller helical rolling, tandem rolling or extrusion → tube
knockout → sizing or tube diameter reduction → cooling → semifinished hot rolled seamless pipe →
straightening → water pressure test → labeling → warehousing.
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