管螺纹外螺纹大径内螺纹小径R1/8"-28 "-19 "-19 "-14 (R5/8"-14) "-14 "-11 "-11 "-11 "-11 "-11 "-28 "-19 "-19 "-14 (G5/8"-14) "-14 "-11 "-11 "-11 "-11 "-11 "-27 "-18 "-18 "-14 "-14 "- "- "- "- "-20 "-20 "-18 "-16 7/8"-14 "-12 "-12 "-12 °管螺纹外径内径3/8"-24 "-20 "-20 "-18 "-16 °圆柱管螺纹的型式和尺寸 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mm G1/81/8" G1/41/4" G3/83/8" G1/21/2" G5/85/8" G3/43/4"
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