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        Location:产品首页 >> Product Center >> Spiral Steel Pipe >> Steel Pipe for Electric Power
        • 产品名称: Steel Pipe for Electric Power
        • 产品编号: A007
        • Views : 48

        Production Name:Steel Pipe for Electric Power
        Standard: GB/T9711-2011 PSL1
        Technical Requirement:
        O.D.Tolerance of Pipe: Body≤±0.75D; whichever is the greater :±3.2mm;End≤±0.50% whichever is the greater: ±1.6mm
        Tolerance of Wall Thickness:≤±0.1t
        Out of Roundness:Body≤0.020D; End≤0.015D;
        Tolerance of Length: ±50mm
        Straightness: Full length ≤0.2%L;
        Out of squareness ≤1.6mm
        Blunted Edge:1.6±0.8mm
        Height of outer welded seam:≤3.5mm
        Height of inner welded seam:≤3.5mm
        Hydrostatic test pressure ≥12.2 MPa delay time≥10s
        Non-destructive Inspection::The full length (100%)of welded seam