英制惠氏管螺纹.doc

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1、BritishPipeThread(惠氏管螺纹)--圆柱(BSPP/BSPF)螺纹代号基本尺寸大径mmd=D螺距mmp每英寸牙数tpi中径mmd2=D2小径外螺纹d3牙型高度H1底孔尺寸mmG1/81/8＂9.7280.907289.1478.5660.5818.7G1/41/4＂13.1571.3371912.30111.4450.85611.6G3/83/8＂16.6621.3371915.80614.950.85615G1/21/2＂20.9551.8141419.79318.6311.16219G5/85/8＂22.9111.814

2、1421.74920.5871.16220.75G3/43/4＂26.4411.8141425.27924.1171.16224.5G7/87/8＂30.2011.8141429.03927.8771.16228G11＂33.2492.3091131.7730.2911.47930.5G11/811/8＂37.8972.3091136.41834.9391.47935G11/411/4＂41.912.3091140.43138.9521.47939.5G13/813/8＂44.3232.3091142.84441.3651.47941.5G

3、11/211/2＂47.8032.3091146.32444.8451.47945G13/413/4＂53.7462.3091152.26750.7881.47951G22＂59.6142.3091158.13556.6561.47957G21/421/4＂65.712.3091164.23162.7521.47963G21/221/2＂75.1842.3091173.70572.2261.47972.5G23/423/4＂81.5342.3091180.05578.5761.47979G33＂87.8842.3091186.40584.9

4、261.47985.5G31/431/4＂93.982.3091192.50191.0221.47991G31/231/2＂100.332.3091198.35197.3721.47997.75G33/433/4＂106.682.30911105.201103.7221.479104G44＂113.032.30911111.55110.0721.479110.5G41/241/2＂125.732.30911124.251122.7721.479123G55＂138.432.30911136.951135.4721.479136G51/251

5、/2＂151.132.30911149.651148.1721.479148.5G66＂163.832.30911162.351160.8721.479161.5