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    Concrete pile and steel wire for telegraph pole (ULBON)

    Aplication

    The high tension release PC steel rod used for the prestress concretepile by the pretension mode applying the centrifugal force and makes and electric pole

    Product feature

    Item Content
    Superior Yield Ratio The yield ratio of 90% or more is maintained. The concrete quality is improved in use
    Low Relaxation Relaxation Loss, the stress loss value, is extremely small for a long time (1,000 hours) less than 2.5%
    Excellent adhesion The separate fixing equipment unnecessary.It has the strong adhesive force with the concrete with the uniform spiral groove of 3~6 in the product surface
    Excellent spot weldability The mechanical property of product due to the Spot welding is not degraded in the automatic knitting machine use, so it a lot contributes to the quality upgrading of the concrete product and productivity improvement through automation
    Excellent Straightness The separate correction work is unnecessary the straightness of the winding former is restored in use it loosens in the Coil state of product.
    Uniform cross section The uniform cross sectional area is maintained and the cross section history is uniform. The degradation of the mechanical property is not even if the head processing or the head operation is done

    Product species(KS D3505)

    Sort Symbol Title Diameter
    (mm)    		 Standard diameter
    (mm)    		 Tolerance Nominal cross section
    (mm2)    		 Unit weight
    (kg/m)
    D Species 1 SBPD 1275/1420 5.1 5.10 ±0.05 19.6 0.154
    6.1 6.10 28.3 0.222
    7.4 7.25 40.0 0.314
    8.3 8.33 52.5 0.412
    9.2 9.25 64.0 0.503
    10.0 10.38 78.5 0.617
    11.0 11.10 90.0 0.707
    11.2 11.53 100.0 0.786
    13.0 13.10 125.0 0.983
    C Species 1 SBPD 1080/1230 5.0 5.00 ±0.05 18.1 0.142
    7.0 7.00 35.4 0.204
    8.0 8.00 46.3 0.278
    9.0 9.00 58.5 0.363
    11.0 11.00 87.4 0.686
    13.0 13.00 122.1 0.959

    Mechanical property

    Sort Symbol Yield strength
    (N/mm2)    		 Tensile strength
    (N/mm2)    		 elongation percentage
    (%)    		 Relaxation
    (%)(T/S x 70%)
    Room Temperature, 1,000Hr
    D Species 1 SBPD 1275/1420 1275(min) 1420(min) 7(min) 2.5(Max)
    C Species 1 SBPD 1080/1230 1080(min) 1230(min) 5(min)

    Chemical component

    (Unit : %)

    P S Cu
    0.03(Max) 0.035(Max) 0.30

    Authentication Information (KS Certification)

    Certification Number Manu-facturer Standard Name Standard Number Rank Title Initial permission
    KTR-19-0105 Korea Heat Treatment Co., Ltd PC Steel Bar KS D3505 C Species 1,
    D Species 1    		 13.0mm (Max) 85.10.17
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