55度管螺纹标准尺寸对照表
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55°圆锥管螺纹(BSPT)
55°圆柱管螺纹的型式和尺寸
55度圆锥管螺纹的实际加工尺寸
55°圆柱管螺纹的型式和尺寸British Pipe Thread(惠氏管螺纹)--圆柱(BSPP/BSPF)
螺纹代号基本尺寸大径
mm
d=D
螺距
mm
p
每英寸牙数
tpi
中径
mm
d2=D2
小径
外螺纹
d3
牙型高度
H1
底孔尺寸
mm
G1/81/8"9.7280.907289.1478.5660.5818.7 G1/41/4"13.1571.3371912.30111.4450.85611.6 G3/83/8"16.6621.3371915.80614.950.85615 G1/21/2"20.9551.8141419.79318.631 1.16219 G5/85/8"22.9111.8141421.74920.587 1.16220.75 G3/43/4"26.4411.8141425.27924.117 1.16224.5 G7/87/8"30.2011.8141429.03927.877 1.16228 G11"33.2492.3091131.7730.291 1.47930.5 G11/811/8"37.8972.3091136.41834.939 1.47935 G11/411/4"41.912.3091140.43138.952 1.47939.5 G13/813/8"44.3232.3091142.84441.365 1.47941.5 G11/211/2"47.8032.3091146.32444.845 1.47945 G13/413/4"53.7462.3091152.26750.788 1.47951 G22"59.6142.3091158.13556.656 1.47957 G21/421/4"65.712.3091164.23162.752 1.47963 G21/221/2"75.1842.3091173.70572.226 1.47972.5 G23/423/4"81.5342.3091180.05578.576 1.47979
G33"87.8842.3091186.40584.926 1.47985. G31/431/4"93.982.3091192.50191.022 1.47991 G31/231/2"100.332.3091198.35197.372 1.47997.75 G33/433/4"106.682.30911105.201103.722 1.479104 G44"113.032.30911111.55110.072 1.479110.5 G41/241/2"125.732.30911124.251122.772 1.479123 G55"138.432.30911136.951135.472 1.479136 G51/251/2"151.132.30911149.651148.172 1.479148.5 G66"163.832.30911162.351160.872 1.479161.5