石油管线管螺纹

螺纹代号螺距（牙数）锥度大端大径D4基准距离L1有效螺纹长度L2螺纹全长L4基面中径E1机紧后J接箍端面到基面M接箍端孔直径Q接箍端孔深度q完整螺纹最小长度Lc手紧紧密距牙数A

1/8LP0.940(27)10.3 4.10 6.709.979.489 3.5 3.0411.9 1.3-3

1/4LP 1.412(18)13.7 5.7910.2115.1012.487 5.5 5.0815.3 3.1-3

3/8LP 1.412(18)17.1 6.1010.3615.2615.926 5.4 4.9218.7 2.9-3

1/2LP 1.814(14)21.38.1313.5619.8519.7727.1 6.2822.9 4.0-3

3/4LP 1.814(14)26.78.6113.8620.1525.117 6.8 6.1028.3 3.9-3

1LP 2.210(11.5)33.410.1617.3425.0131.4618.38.2235.0 5.78.453

11/4LP2.210(11.5)42.210.6717.9525.6240.2189.38.3243.8 5.89.063

11/2LP2.210(11.5)48.310.6718.3826.0446.2878.98.7449.9 6.29.483

6.010.323

12.516.112

12.017.702

11.818.972

12.520.242

12.822.942

14.925.632

17.230.712

18.836.112

20.041.192

18.144.372

16.949.452

17.254.532

19.059.612

55°圆锥内螺纹

55°圆锥外螺纹60°圆锥管螺纹

ZG ZG Z

Rc R-

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螺纹