钻铤的尺寸规格

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1、表1钻铤的尺寸规格钻铤螺纹型号外径D内径d长度Lmm台肩倒角直径DFmm参考的弯曲强度比mminmminNC23-3179.431/831.811/4915076.22.57:1NC26-35(23/8IF)88.931/238.111/2915082.92.42:1NC31-41(27/8IF)104.841/850.829150100.42.43:1NC35-47120.743/450.829150114.72.58:1NC3850(31/2IF)127.0557.221/49150121.02.38:1NC44-60152.4657.221/

2、49150或9450144.52.49:1NC44-62158.861/457.221/49150或9450149.22.91:1NC46-62(4IF)158.861/471.4213/169150或9450150.02.63:1NC46-65(4IF)165.161/257.221/49150或9450154.82.76:1NC46-65(4IF)165.161/271.4213/169150或9450154.83.05:1NC46-67(4IF)171.463/457.221/49150或9450159.53.18:1NC50-67(41/2

3、IF)171.463/471.4213/169150或9450159.52.37:1NC50-70(41/2IF)177.8757.221/49150或9450164.72.54:1NC50-70(41/2IF)177.8771.4213/169150或9450164.72.73:1NC50-72(41/2IF)184.271/471.4213/169150或9450169.53.12:1NC50-77196.873/471.49150或9450185.32.70:1213/16NC50-80203.2871.4213/169150或9450190

4、.13.02:165/8REG209.681/471.4213/169150或9450195.72.93:1NC61-90228.6971.4213/169150或9450212.73.17:175/8REG241.391/276.239150或9450223.82.81:1NC70-97247.693/476.239150或9450232.62.57:1NC70-100254.01076.239150或9450237.32.81:185/8REG279.41176.239150或9450266.72.84:1机械性能(钻铤）外径OD屈服强度0.2

5、Mpa抗拉强度bMpa伸长率4%布氏硬度HB夏比冲击功AKVJmmininch79.4-171.431/8-63/4≥758≥965≥13285-341≥54177.8-279.47-11≥689≥930螺纹连接部位应力分散槽钻铤螺纹类型内螺纹台肩面至后一牙长度±1.59mm内螺纹圆柱段直径Dcb+0.40,-0mm内螺纹圆柱段后的锥孔锥度±20.83mm/m外螺纹槽直径DG+0,+0-0.79mm可替代内螺纹台肩面至力分散槽长度LRG+0-3.18mmNC3582.682.15166.6782.1585.73NC38(31/2IF)88.988.

6、11166.6789.3092.08NC44101.6101.60166.67106.36104.78NC46(4IF)101.6106.76166.67109.93104.78NC50(41/2IF)101.6117.48166.67120.65104.78NC56114.3121.84250.00134.14117.48NC61127.0132.95250.00149.25130.18NC70139.7152.00250.00171.05142.8865/8REG114.3134.14166.67137.72117.4875/8REG120.7

7、133.35250.00162.72123.8385/8REG123.8149.25250.00184.94127.00　注：NC23、26、31与23/8IF螺纹因壁薄而不带连接部位应力分散模槽