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        Location:产品首页 >> Product Center >> ERW Steel Pipe >> Oil Casing Steel Pipe 9th edition
        • 产品名称: Oil Casing Steel Pipe 9th edition
        • 产品编号: 0001
        • Views : 99

        Name of product: Oil Casing Steel Pipe 9th edition
        Standard: API5CT
        Grade of steel: J55
        Specification: Φ219.08×8.94×12000mm
        Technical requirement
        O.D. tolerance: -0.5%—1.0%D
        Tolerance of Wall Thickness: ≤-12.5%t;
        Tolerance of Length :0—+20mm;
        Straightness: pipe length≤0.2%L; pipe end≤3.18mm in 1.5m;
        Outside bur: almost abreast with the base metal
        Inside bur: ≤1.14mm, radial offset≤0.05t
        Imitate normalizing heat treatment;
        Hydrostatic Pressure Test≥24.5MPa   time holding test pressure≥5s
        NDT: the full length (100%) of welding seam UT
        Total length drift test