油、套管、鉆桿螺紋實用尺寸

油套管螺紋參數(shù)GB9553.1-1999說明1、 手緊緊密距“A”是基本機緊上扣內(nèi)的基本留量。2、 對于基本機緊上扣，接箍或內(nèi)螺紋端面旋緊至消失點端面。3、對于8牙/25.4mm圓螺紋套管，Lc=(L4-28.58)mm。 對于偏梯形套管螺紋Lc=(L7-10.16)mm。4、 對于井下工具上的圓螺紋，消失錐角任選。5、 手緊面即基面。6、 完整螺紋對于外螺紋，第1牙完整螺紋是靠近倒角的螺紋，對于內(nèi)螺紋，是靠近端面的螺紋，且牙底兩側都是完整螺紋。對于油管最后一牙完整螺紋的位置在距外螺紋端面(L4-g)處，對于偏梯形螺紋，在距外螺紋端面L7處；對于圓螺紋套管，在管端至螺紋消失點長度(L4-12.70)處。對于內(nèi)螺紋，最后一牙完整螺紋的位置應距接箍中心或整體連接油管內(nèi)螺紋小端J+1p。7、 偏梯形套管螺紋上的中徑是大徑和小徑的中間值。8、 偏梯形外螺紋的完全螺紋長度L7即為管端至E7平面長度。9、 計算值說明：圓螺紋內(nèi)螺紋大端小徑8牙/25.4mm圓螺紋D6=E1+M/16-(H—2Scn)=E1+M/16-1.734；10牙/25.4mm圓螺紋D6=E1+M/16-(H—2Scn)=E1+M/16-1.336;圓螺紋外螺紋小端大徑8牙/25.4mm圓螺紋D5=(E1-L1/16)+(H-2Scs)=E1-L1/16+1.73410牙/25.4mm圓螺紋D5=(E1-L1/16)+(H-2Scs)=E1-L1+1.336

螺紋參數(shù)基本尺寸極限偏差錐度62.5mm/mm=1:16斜角=1°47'24''+5.208mm每米長度直徑偏差-2.600mm+0.132mm每25.4mm長度直徑偏差-0.066mm螺距p=8牙/25.4mm=3.175mm每25.4mm ±0.076mm累計 ±0.152mm牙型角60°±1/2°原始三角型高度H=0.866p=2.750********************牙型高度hs=hn=0.626p-0.178=1.810+0.051mm-0.102mm牙頂削平高度Scs=Scn=0.120p+0.127=0.508**********************牙底削平高度Srs=Srn=0.120p+0.051=0.432**********************中徑-牙頂高度H/2-Scs=2.75/2-0.508=0.867（自算）中徑-牙底高度H/2-Srs=2.75/2-0.432=0.943（自算）外螺紋全長L4““““““““““““************±1p=1.588緊密距A“““““““““““““*************±1p倒角“““““““““““““*************+5°接箍鏜孔直徑Q鏜孔深度q“““““““““““““*************+0.78mm接箍外徑“““““““““““““*************外徑的1%，但不超過±3.18表1表1套管圓螺紋基本尺寸單位mm表2套管圓螺紋尺寸螺紋代號套管外徑套管壁厚套管及外螺紋接箍及內(nèi)螺紋大端直徑D4管端至手緊面L1管端至消失端L4有效螺紋長度L2完整螺紋最小長度Lc接箍外徑W最小接箍長度N接箍端面至手緊面M鏜孔直徑Q鏜孔深度q承載面寬度b手緊面中徑E1機緊管端至接箍中心J手緊緊密距牙數(shù)A套管短圓螺紋41/2CSG114.305.21114.3023.3950.8043.5622.23127.00158.7517.88116.6812.703.97111.84628.58341/2CSG114.3其余114.3039.2766.6859.4438.10127.00158.7517.88116.6812.703.97111.84612.7035CSG127.005.59127.0036.0963.5056.2634.93141.30165.1017.88129.3812.704.76124.54619.0535CSG127.00其余127.0042.4469.8562.6141.28141.30165.1017.88129.3812.704.76124.54612.70351/2CSG139.7全部139.7045.6273.0265.7944.45153.67171.4517.88142.0812.703.18137.24612.70365/8CSG168.28全部168.2851.9779.3872.1450.80187.71184.1517.88170.6612.706.35165.82112.7037CSG177.805.87177.8032.9260.3253.0931.75194.46184.2017.88180.1812.704.76175.34631.7537CSG177.8全部177.8051.9779.3872.1450.08194.46184.2017.88180.1812.704.76175.34612.70375/8CSG193.68全部193.6853.4482.5575.3153.98215.90190.5018.01196.0611.005.56191.11412.7031/285/8CSG219.086.71219.0847.0976.2068.9647.63244.48196.9018.01221.4611.006.35216.51422.2331/285/8CSG219.08其余219.0856.6285.7278.4957.15244.48196.9018.01221.4611.006.35216.51412.7031/295/8CSG2)244.48全部244.4856.6285.7278.4957.15269.88196.9018.01246.8611.006.35241.91412.7031/295/8CSG3)244.48全部244.4854.9185.7278.4957.15269.88196.9018.11246.8611.006.35241.80812.704103/4CSG2)273.057.09273.0540.7469.8562.6141.28298.45203.2018.01275.4311.006.35270.48931.7531/2103/4CSG2)273.05其余273.0559.7988.9081.6660.33298.45203.2018.01275.4311.006.35270.48912.7031/2103/4CSG3)273.05其余273.0558.0988.9081.6660.33298.45203.2018.11275.4311.006.35270.38312.704113/4CSG2)298.45全部298.4559.7988.9081.6660.33323.85203.2018.01300.8311.006.35295.88912.7031/2113/4CSG3)298.45全部298.4558.0988.9081.6660.33323.85203.2018.11300.8311.006.35295.78312.704133/8CSG2)339.73全部339.7359.7988.9081.6660.33365.13203.2018.01342.1111.005.56337.16412.7031/2133/8CSG3)339.73全部339.7358.0988.9081.6660.33365.13203.2018.11342.1111.005.56337.05812.704

續(xù)表2套管圓螺紋尺寸螺紋代號套管外徑套管壁厚套管及螺紋接箍及內(nèi)螺紋大端直徑D4管端至手緊面L1管端至消失端L4有效螺紋長度L2完整螺紋最小長度Lc接箍外徑W最小接箍長度N接箍端面至手緊面M鏜孔直徑Q鏜孔深度q承載面寬度b手緊面中徑E1機緊管端至接箍中心J手緊緊密距牙數(shù)A16CSG406.40全部406.4072.49101.6094.3673.03431.80228.6018.01408.789.305.56403.83912.7031/2185/8CSG473.0811.05473.0872.49101.6094.3673.03508.00228.6018.01475.469.305.56470.51412.7031/220CSG4)508.00全部508.0072.49101.6094.3673.03533.40228.6018.01510.389.305.56505.43912.7031/220CSG5)508.00全部508.0070.79101.6094.3673.03533.40228.6018.11510.389.305.56505.33312.704套管長圓螺紋41/2LCSG114.30全部114.3048.7976.2068.9647.63127.00177.8017.88116.6812.703.97111.84612.7035LCSG127.00全部127.0058.3285.7278.4957.15141.30196.8517.88129.3812.704.76124.54612.70351/2LCSG139.70全部139.7061.4988.9081.6660.33153.67203.2017.88142.0812.703.18137.24612.70365/8LCSG168.28全部168.1371.0298.4291.1969.85187.71222.2517.88170.6612.706.35165.82112.7037LCSG177.80全部177.8074.19101.6094.3673.03194.46228.6017.88180.1811.004.76175.34612.70375/8LCSG193.68全部193.6875.67104.7897.5476.20215.90235.0018.01196.0611.005.56191.11412.7031/285/8LCSG219.08全部219.0885.19114.30107.0685.73244.48254.0018.01221.4611.006.35216.51412.7031/295/8LCSG2)244.48全部244.4891.54120.65113.4192.08269.88266.7018.01246.8611.006.35241.91412.7031/295/8LCSG3)244.48全部244.4889.84120.65113.4192.08269.88266.7018.11246.8611.006.35241.80812.70420LCSG4)508.00全部508.00104.24133.35126.11104.78533.40292.1018.01510.389.305.56505.43912.7031/220LCSG5)508.00全部508.00102.54133.35126.11104.78533.40292.1018.11510.389.305.56505.33312.704注：2）適用于低于P110鋼級的接箍。 3）適用于P110鋼級或更高鋼級的接箍。4）適用于低于J55和K55鋼級的接箍。 5）適用于J55和K55鋼級及更高鋼級的接箍。

表3套管圓螺紋實用尺寸螺紋代號螺距牙/寸牙高錐度套管及外螺紋接箍及內(nèi)螺紋壁厚大端大徑D4小端大徑*D5錐段長度*LZ管端至消失點螺紋長L有效螺紋長度L_管端至變徑處長度L6接箍外徑DM錐孔大端直徑D6錐孔小端直徑*DX錐孔長度L9鏜孔直徑Q鏜孔深度q螺紋全長L7端面最小厚度B接箍取小長度N套4管短圓螺紋41/2CSG81.811:165.21114.30112.11734.92850.8043.5680127.00111.23105.29395116.6812.7803.97158.7541/2CSG其它114.30111.12650.78466.6859.4495127.00111.23105.29395116.6812.7803.97158.755CSG5.59127.00124.02447.61663.5056.2695141.30123.93117.68100129.3812.7824.76165.105CSG其它127.00123.62853.95269.8562.61100141.30123.93117.680100129.3812.7824.76165.1051/2CSG全部139.7136.12957.13673.0365.79100153.67136.63130.380100142.0812.7853.18171.4565/8CSG全部168.28164.30763.56879.3872.14110187.71165.20158.325110170.6612.7926.35184.157CSG5.87177.80175.02344.43260.3253.0990194.46174.73167.855110180.1812.7924.76184.207CSG其它177.80173.83263.48879.3872.14110194.46174.73167.855110180.1812.7924.76184.2075/8CSG全部193.68189.50866.75282.5575.31110215.90190.50183.625110196.0511.0955.56190.5085/8CSG6.71219.08215.30460.41676.2068.96110244.48215.90208.712115221.4611.01006.35196.9085/8CSG其余219.08214.70969.93685.7278.49115244.48215.90208.712115221.4611.01006.35196.9095/8CSG2)全部244.48240.10969.93685.7278.49115269.88241.30234.112115246.8611.01006.35196.9095/8CSG3)全部244.48240.11069.92085.7278.49115269.88241.20234.112115246.8611.01006.35196.90103/4CSG2)7.09273.05269.67753.96869.8562.61100298.45269.88262.692115275.4311.01026.35203.20103/4CSG2)其余273.05268.48673.02488.9081.66120298.45269.88262.692115275.4311.01026.35203.20103/4CSG3)全部273.05268.48673.02488.9081.66120298.45269.78262.692115275.4311.01026.35203.20113/4CSG2)全部298.45293.88673.02488.9081.66120323.85295.28288.092115300.8311.01026.35203.20113/4CSG3)全部298.45293.88673.02488.9081.66120323.85295.18287.992115300.8311.01026.35203.20133/8CSG2)全部339.73335.16173.10488.9081.66120365.13336.56369.372115342.1111.01025.56203.20133/8CSG3)全部339.73335.16173.10488.9081.66120365.13336.46369.272115342.1111.01025.56203.20

續(xù)表3套管圓螺紋實用尺寸螺紋代號螺距牙/寸牙高錐度套管及外螺紋接箍及內(nèi)螺紋壁厚大端大徑D4小端大徑*D5錐段長度*LZ管端至消失點螺紋長L有效螺紋長度L2管端至變徑處長度L6接箍外徑DM錐孔大端直徑D6錐孔小端直徑*DX錐孔長度L9鏜孔直徑Q鏜孔深度q螺紋全長L7端面最小厚度B接箍取小長度N16CSG81.811:16全部406.40401.04285.728 4 101.6094.36130431.80403.23395.105130408.789.301145.56228.60185/8CSG11.05473.08467.71785.808101.694.36130508.00469.90461.775130475.469.301145.56228.6020CSG4)全部508.00502.64285.728101.6094.36130533.40504.83496.705130510.389.301145.56228.6020CSG5)全部508.00502.64285.728101.6094.36130533.40504.83496.705130510.389.301145.56228.60套管長圓螺紋41/2LCSG81.811:16全部114.30110.53160.30476.2068.96105127.00111.23104.668105116.6812.70903.97177.805LCSG全部127.00122.63569.84085.7278.49115141.30123.93116.742115129.3812.701004.76196.8551/2LCSG全部139.70135.13773.12088.9081.66120153.67136.63129.442115142.0812.701023.18203.2065/8LCSG全部168.13163.11680.22498.4291.19130187.71165.20157.388125170.6612.701106.35222.257LCSG全部177.80172.44385.712101.6094.36130194.46174.73166.605130180.1811.01154.76228.6075/8LCSG全部193.68188.11988.976104.7897.54135215.90190.50182.062135196.0611.01185.56235.0085/8LCSG全部219.08212.92498.496114.30107.06145244.48215.90207.025142221.4611.01276.35254.0095/8LCSG2)全部244.48237.927104.848120.65113.41150269.88241.30231.925150246.8611.01356.35266.7095/8LCSG3)全部244.48237.927104.848120.65113.41150269.88241.20231.825150246.8611.01356.35266.7020LCSG4)全部508.00500.658117.472133.35126.11165533.40504.83494.83160510.389.301465.56292.1020LCSG5)全部508.00500.658117.472133.35126.11165533.40504.73494.73160510.389.301465.56292.10注：2）適用于低于P110鋼級的接箍。 3）適用于P110鋼級或更高鋼級的接箍。4）適用于低于J55和K55鋼級的接箍。 5）適用于J55和K55鋼級及更高鋼級的接箍。

螺紋參數(shù)基本尺寸極限偏差錐度接箍：規(guī)格41/2?13/3/862.5mm/mm=1:16斜角=1°47'24''規(guī)格31683.3mm/m=1:12斜角=2°23'17''+4.50mm每米長度直徑偏差-2.50mm+0.114mm母25.4mm長度直徑偏差-0.064mm+0.114mm母25.4mm長度直徑偏差-0.064mm套管：在完整螺紋長度內(nèi)：規(guī)格41/2?13/3/862.5mm/mm=1:16斜角=1°47'24''規(guī)格31683.3mm/m=1:12斜角=2°23'17''在不完整螺紋長度：規(guī)格41/2?13/3/862.5mm/mm=1:16斜角=1°47'24''規(guī)格31683.3mm/m=1:12斜角=2°23'17''+3.50mm每米長度直徑偏差-1.50mm+0.089mm母25.4mm長度直徑偏差-0.038mm+0.089mm母25.4mm長度直徑偏差-0.038mm+5.50mm每米長度直徑偏差-1.50mm+0.114mm母25.4mm長度直徑偏差-0.038mm+0.114mm母25.4mm長度直徑偏差-0.038mm螺距p=5牙/25.4mm=5.080mm規(guī)格<133/8 ±0.051mm/25.4mm規(guī)格316 ±0.076mm/25.4mm累計 ±0.102mm/25.4mm牙型角13°±1°牙型高度h=1.575±0.025mm

表5套管偏梯螺紋尺寸螺紋代號套管外徑套管外螺紋接箍及內(nèi)螺紋完整螺紋平面中徑E7機緊管端至接箍中心J手緊管端至接箍中心Jn手緊緊密距牙數(shù)A大端直徑D4小端直徑*d管端至消失端L4不完整螺紋長g完整螺紋長度L7完整螺紋最小長度Lc接箍外徑W最小接箍長度N端面錐孔內(nèi)徑Dz接箍端面全E7平面M鏜孔直徑Q承載面寬度b41/2BCSG114.30114.71112.08292.3950.3942.0031.84127.00225.40114.54847.85117.863.18113.13212.7022.91/25BCSG127.00127.41124.58495.5750.3945.1735.01141.30231.80127.08945.31130.563.97125.83212.7025.4151/2BCSG139.70140.11137.18497.1650.3946.7636.60153.67235.00139.78945.31143.263.97138.53212.7025.4165/8BCSG168.28168.68165.462101.9250.3951.5241.36187.71244.50168.36445.31171.836.35167.10712,7025.417BCSG177.80178.21174.689106.6850.3956.2946.13194.46254.50177.88945.31181.365.56176.63212.7025.4175/8BCSG193.68194.08188.691111.4450.3961.0550.89215.90263.50193.76445.31197.237.94192.50712.7025.4185/8BCSG219.08219.48215.468114.6250.3964.2254.06244.48269.90219.16445.31222.639.53217.90712.7025.4195/8BCSG244.48244.89240.868114.6250.3964.2254.06269.88269.90244.56445.31248.039.53243.30712.7025.41103/4BCSG273.05273.46269.443114.6250.3964.2254.06298.45269.90273.13945.31276.619.53271.88212.70-25.41113/4BCSG298.45298.86294.843114.6250.3964.2254.06323.85269.90298.53945.31302.019.53297.28212.7025.41133/8BCSG339.73340.13336.118114.6250.3964.2254.06365.13269.90339.81445.31343.289.53338.55712.7025.4116BCSG406.40406.40399.787117.1637.8079.3669.20431.80269.90406.02933.35410.319.53404.82512.7022.27/8185/8BCSG473.08473.08466.462117.1637.8079.3669.20508.00269.90472.70433.35476.999.53471.50012.7022.27/820BCSG508.00508.00501.387117.1637.8079.3669.20533.40269.90507.62933.35511.919.53506.42512.7022.27/8表6油管圓螺紋基本尺寸單位mm螺紋參數(shù)基本尺寸極限偏差錐度62.5mm/mm=1:16斜角=1°47'24''+5.208mm每米長度直徑偏差-2.600mm+0.132mm母25.4mm長度直徑偏差-0.066mm螺距p=8牙/25.4mm=3.175mmp=10牙/25.4mm=2.540mm±0.076mm/25.4mm累計±0.152mm牙型角60°±1/2°原始三角型高度H=0.866p10牙/25.4mmH=2.2008牙/25.4mmH=2.750""""""""""""""""""""個個個個個個個個個個個個個個個個個個個個牙型高度hs=hn=0.626p-0.17810牙/25.4mmhn=1.4128牙/25.4mmhn=1.810+0.051mm-0.102mm牙頂削平高度Scs=Scn=0.120p+0.12710牙/25.4mmScn=0.4328牙/25.4mmScn=0.508""""""""""""""""""""""個個個個個個個個個個個個個個個個個個個個個個牙底削平高度Srs=Srn=0.120p+0.05110牙/25.4mmSrs=0.3568牙/25.4mmSrx=0.432""""""""""""""""""""""個*********************外螺紋全長L4““““““““““““************8牙 ±1p=3.175mm10牙：外加厚+11/2p=3.81mm-3/4p=1.905mm不加厚±11/2p=±3.81mm緊密距A“““““““““““““*************8牙 ±1p=±3.175mm10牙 ±11/2p=±3.81倒角“““““““““““““*************+5°接箍外徑“““““““““““““*************外徑的1%。表7油管螺紋尺寸螺紋代號油管外徑螺距（每英寸牙數(shù)）油管及外螺紋接箍及內(nèi)螺紋大端直徑D4管端至手緊面L1管端至消失端L4有效螺紋長度L2完整螺紋最小長度Lc接箍外徑W最小接箍長度N接箍端面至手緊面M鏜孑L直徑Q鏜孔深度q承載面寬度b手緊面中徑E1機緊管端至接箍中心J手緊緊密距牙數(shù)A不加厚油管螺紋1.050TBG26.671026.6711.3827.7923.507.6233.3580.9611.3328.277.941.5925.10212.721.315TBG33.401033.4012.1728.5824.287.6242.1682.5511.3335.007.942.3831.83312.721.660TBG42.161042.1615.3431.7527.468.8952.1788.9011.3343.767.943.1840.59612.721.900TBG48.261048.2618.5234.9330.6312.0755.8895.2511.3349.867.941.5946.69212.7223/8TBG60.331060.3324.8741.2836.9818.4273.03107.9511.3361.937.944.7658.75712.7227/8TGB73.031073.0335.9952.4048.1129.5488.90130.1811.3374.637.944.7671.45712.7231/2TBG88.901088.9042.3458.7554.4635.89107.95142.8811.3390.507.944.7687.33212.724TBG101.608101.6040.4160.3354.3634.93120.65146.0513.56103.209.534.7699.41412.7241/2TBG114.408114.4045.1965.1059.1339.70132.08155.8013.56115.909.534.76112.11412.721.050UP26.671033.4012.1728.5824.287.6242.1682.5511.3335.007.942.3831.83312.72外加厚油管螺紋1.315UP33.401037.3115.3431.7527.468.8948.2688.9011.3338.897.942.3835.73912.721.660UP42.161046.0218.5234.9330.6312.0755.8895.2511.3347.637.943.1844.47012.721.900UP48.261053.1920.1236.5332.2313.6763.5098.4311.3354.767.943.1851.61412.7223/8UP60.33865.8929.3149.2343.2623.8377.80123.8313.5667.469.533.9763.69712.7227/8UP73.03878.5934.0653.9848.0128.5893.17133.3513.5680.169.535.5676.39712.7231/2UP88.90895.2540.4160.3354.3634.93114.30146.0513.5696.859.536.3593.06412.724UP101.608107.9543.5963.5057.5338.10127.00152.4013.56109.559.536.35105.76412.7241/2UP114.308120.6546.7166.6860.7141.28141.30158.7513.56122.259.536.35118.46412.72

表8油管螺紋實用尺寸螺紋代號螺距牙/寸牙高錐度油管及外螺紋接箍及內(nèi)螺紋大端大徑D4小端大徑*D5錐段長度*LZ內(nèi)徑d管端至變徑處長度L管端至消失點螺紋長L.有效螺紋長度L接箍外徑DM錐孔大端直徑D6錐孔小端直徑*DX錐孔長度L9鏜孔直徑Q鏜孔深度q螺紋全長L7接頭旋鉗長度*L?端面最小厚度B接箍取小長度N6 F外r 一4、 s 1U不加厚油管1.9UUTBG1U1.4121:1648.346.87U22.884U.35U34.923U.6355.946.U6442.6265549.97.947.66U1.695.2523/8TGB1U6U.358.53928.1765U.36U41.2836.9873.U58.12953.7547U61.97.954.U754.81U7.9527/8TBG1U73.U7U.54439.29662.U7U52.4U48.1188.97U.82965.8298U74.67.965.1854.813U.1831/2TBG1U88.986.U2246.U4875.98U58.7554.461U8.U86.7U481.U799U9U.57.971.4954.8142.884TBG81.81U1U1.698.62247.64888.68U6U.3254.3612U.698.52892.9U39U1U3.29.573954.8146.U541/2TBG8114.3111.U2452.4161UU.38U65.1U59.13132.1111.2281U5.6U39U115.99.577.8954.8155.8U外加厚油管1.9UUUP1U1.4121:1653.251.69224.1284U.35536.5332.2363.55U.98647.5485554.87.94U.2653.298.4323/8UP81.81U65.963.7U935.U565U.36549.2343.2677.862.81158.4367U67.59.561.98U4.U123.8327/8UP878.676.UU241.56862.U7U53.9848.U193.275.5117U.5118U8U.29.566.79U5.6133.3531/2UP895.292.27246.84875.98U6U.3254.36114.392.17886.5539U96.99.5731UU6.4146.U54UP81U8.U1U4.77451.61688.68U63.5U57.53127.U1U4.87899.2539U1U9.69.576.21UU6.4152.4U41/2UP812U.6117.27553.21UU.38U66.686U.71141.3117.578111.9539U122.39.579.41U56.4158.75注：*為計算值。

表9 石油鉆桿接頭螺紋牙型尺寸螺紋牙型V-0.038R1)V-0.038R2)V-0.040V-0.0502)V-0.0501)V-0.065螺距mm（牙/In）6.35(4)6.35(4)5.080(5)6.35(4)6.35(4)6.35(4)錐度1:61:41:41:41:61:6原始三角型高度H5.4875.4714.3765.4715.4875.487牙型高度hn=hs3.0953.0832.9933.7423.7552.831牙頂削平高度h=h1.4271.4230.8751.0941.0971.426 cn cs牙底削平高度h=h0.9650.9650.5080.6350.6351.229 rnrs牙頂寬度Fcn=Fcs1.6511.6511.0161.2701.2701.651牙頂寬度Frn=Frs—————1.422牙底圓角半徑r=r0.9650.9650.5080.6350.635—rnrs圓角半徑r0.3810.3810.3810.3810.3810.381螺紋代號NC23-NC50NC56-NC7723/8REG-41/2REG31/2FH41/2FH51/2REG75/8REG85/8REG65/8REG51/2FH65/8FH23/8IF-51/2IF4FH

表10石油鉆桿接頭螺紋尺寸螺紋代號螺距mm(牙/In)錐度牙型高度hn=hs基面中徑C夕卜螺紋內(nèi)螺紋大端大徑D小端大徑Ds錐部長度L錐孔大端直徑Dzd錐孔小端直徑Dzx錐孔長度ldc有效螺紋長度Ldt3擴錐孔大端直徑Qkd擴錐孔小端直徑Dkx擴錐孔長度LkNC236.350(4)1:63.09559.817L65.10052.400PC76.259.83044.480BC92.1BT79.466.764.0316+2NC26(23/8IF)3.095(2.831)67.76773.05060.35076.267.78052.43092.179.474.671.93NC31(27/8IF)80.84886.13171.32388.980.86163.394104.892.187.785.13NC353.09589.68794.97179.09695.289.70071.183111.198.496.894.13NC38(31/2IF)3.095(2.831)96.723102.00685.065101.696.73677.153117.5104.8103.6100.93NC40(4FH)103.429108.71289.662114.3103.44281.742130.2117.5110.3107.63NC443.095112.192117.47598.425114.3112.20590.505130.2117.5119.1116.43NC46(4IF)3.095(2.831)117.500122.784103.734114.3117.51395.813130.2117.5124.6121.93NC50(41/2IF)128.059133.350114.300114.3128.072106.372130.2117.5134.9132.23NC561:43.083142.646149.250117.500127.0143.990108.265142.9130.2150.8146.80NC61156.921163.525128.600139.7158.265119.365155.6142.9165.1161.10NC70179.146185.750147.650152.4180.490138.415168.3155.6187.3183.30NC77196.621203.2