管螺纹与普通螺纹攻牙孔径对照表.pdf

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1、管螺纹参数表55°非密封管螺纹（GB/T7307-2001）尺寸代号1/161/81/43/81/25/83/47/8内螺纹钻（扩）孔底径6.808.8011.8015.2519.0021.0024.5028.25（G）车（镗）孔底径6.758.7511.8015.3019.0021.0024.5528.30外螺纹（G）坯径7.709.7013.1016.6020.9022.9026.4030.20尺寸代号11-1/81-1/41-1/21-3/422-1/42-1/2内螺纹钻（扩）孔底径30.7535.5039.5045.0051.0057.0063.0073.00（G

2、）车（镗）孔底径30.8035.4539.4545.3551.3057.1563.2572.70外螺纹（G）坯径33.2037.8041.9047.8053.7059.6065.7075.10尺寸代号2-3/433-1/244-1/255-1/26内螺纹钻（扩）孔底径79.0085.0098.00（G）车（镗）孔底径79.0085.4097.85110.50123.20135.90148.60161.30外螺纹（G）坯径81.5087.80100.30113.00125.70138.40151.10163.8055°密封管螺纹（GB/T7306.1~2-2000）圆柱内螺

3、纹（Rp）圆锥内螺纹（Rc）圆锥外螺纹（R）尺寸代钻车柱孔坯锥孔坯圆锥大圆锥小号底孔深端肩距螺塞长（扩）（镗）底径底孔锥孔大径端直径端直径1/166.606.556.406.206.5615.007.807.4512.509.001/88.608.558.408.208.5715.009.809.4512.509.001/411.5011.4511.2011.0011.4522.0013.5013.0018.5011.003/815.0014.9514.7514.5014.9522.0016.8016.2519.0012.001/218.7518.6518.2518.00

4、18.6330.0021.1020.4025.0015.003/424.2524.1523.7523.5024.1231.0026.5025.8026.5017.00130.5030.3529.7529.5030.2938.0033.4032.5531.8019.001-1/439.0039.0038.3038.0038.9540.0042.1041.1034.2022.001-1/245.0044.9044.2044.0044.8540.0048.0047.0034.2023.00257.0056.7055.8055.5056.6645.0059.8058.6038.5

5、026.002-1/273.0072.3071.2070.9072.2350.0075.4074.0543.0030.00385.0085.0083.7083.5084.9353.0088.1086.5546.0032.003-1/297.4596.1095.8097.3755.00100.6098.9047.8035.004110.15108.60108.30110.1059.00113.30111.4052.0038.005135.50133.80133.50135.5063.00138.80136.6056.5042.006160.90159.20158.80160

6、.9063.00164.20162.0056.5042.0060°密封管螺纹（GB/T12716-2011）圆柱内螺纹(NPSC)圆锥内螺纹（NPT）圆锥外螺纹（NPT）尺寸代柱孔坯锥孔坯圆锥大圆锥小号螺孔坯底直径底孔深端肩距螺塞长底径底孔锥孔大径端(圆端直径1/166.256.006.3915.008.007.6213.009.001/88.608.508.408.7415.0010.309.9513.009.001/411.2011.1010.8011.3623.0013.8013.2519.0012.003/814.5014.7014.2514.8023.0017.

7、2016.6520.0012.001/218.0018.0017.6018.3230.0021.4020.7025.0015.003/423.5023.2523.0023.6730.0026.7026.0026.0015.00129.5029.2528.7529.6937.0033.4032.5032.0019.001-1/438.0038.0037.5038.4538.0042.2041.3032.0019.001-1/244.0044.2543.5044.5238.0048.3047.3033.0020.00256.005