Identification method of fake thick-walled seamless pipe
1. Shoddy thick-walled seamless steel tubes prone to folding. Folding is a thick-walled seamless steel tube surface formed by a variety of polylines, this defect is often throughout the longitudinal product. The cause of folding is due to t.
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Spiral steel pipe itself has no life limit, and the service life is mainly related to the operating environment and production process. Spiral steel pipe operating environment is relatively poor In order to extend the service life, the oute.
Insulation Large Diameter Spiral Steel Pipe Structure and Features Insulation large diameter spiral steel pipe features: Polyurethane foam has good mechanical properties and thermal insulation properties. It can withstand 120C under normal.