必威体育|首页
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  • Drill collar thread
    OD D
    ID d
    Length L
    mm

    Ledge   Chamfer DIA.

    Df  mm

    Bending Strength 

    Ratio

    mm
    in
    mm
    in
    NC31-41(27/8IF)
    104.8
    4 1/8
    50.8
    2
    9150
    100.4
    2.43:1
    NC35-47
    120.7
    4 3/4
    50.8
    2
    9150
    114.7
    2.58:1
    NC38-50(31/2IF)
    127.0
    5
    57.2
    2 1/4
    9150
    121.0
    2.38:1
    NC44-60
    152.4
    6
    57.2
    2 1/4
    9150or9450
    144.5
    2.49:1
    NC44-60
    152.4
    6
    71.4
    2 13/16
    9150or9450
    144.5
    2.84:1
    NC44-62
    158.8
    61/4
    57.2
    2 1/4
    9150or9450
    149.2
    2.91:1
    NC46-62(4IF)
    158.8
    61/4
    71.4
    2 13/16
    9150or9450
    150.0
    2.63:1
    NC46-65(4IF)
    165.1
    61/2
    57.2
    2 1/4
    9150or9450
    154.8
    2.76:1
    NC46-65(4IF)
    165.1
    61/2
    71.4
    2 13/16
    9150or9450
    154.8
    3.05:1
    NC46-67(4IF)
    171.4
    63/4
    57.2
    2 1/4
    9150or9450
    159.5
    3.18:1
    NC50-67(41/2IF)
    171.4
    63/4
    71.4
    2 13/16
    9150or9450
    159.5
    2.37:1
    NC50-70(41/2IF)
    177.8
    7
    57.2
    2 1/4
    9150or9450
    164.7
    2.54:1
    NC50-70(41/2IF)
    177.8
    7
    71.4
    2 13/16
    9150or9450
    164.7
    2.73:1
    NC50-72(41/2IF)
    184.2
    71/4
    71.4
    2 13/16
    9150or9450
    169.5
    3.12:1
    NC56-77
    196.8
    73/4
    71.4
    2 13/16
    9150or9450
    185.3
    2.70:1
    NC56-80
    203.2
    8
    71.4
    2 13/16
    9150or9450
    190.1
    3.02:1
    65/xREG
    209.6
    81/4
    71.4
    2 13/16
    9150or9450
    195.7
    2.93:1
    NC61-90
    228.6
    9
    71.4
    2 13/16
    9150or9450
    212.7
    3.17:1
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