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    HQ drill pipe
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    HQ drill pipe

    Quantity Order:
    Payment Method:
    Telegraphic Transfer (T/T)
    Pack. & Delivery:
    À¦×°

    Specification :

    Theory Drilling depth 1000m
    Outer diameter 89mm
    Inner diameter 77.8mm
    Length 3m/10ft; 1.5m/5ft
    Raw Material steel grade 30CrMnSia/XJY850
    Standard GB/T816-2008
    Treatment Heat treatment the whole pipe
    Tensile strength £¨MPa£© 1020
    yield strength £¨MPa£© 915
    Elongation after Ultimate strength % 16
    Surface hardness(Brinell) 270~295 Eccentricity (Radial run-out) %10 of pipe thickness

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