管螺纹尺寸表
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55°圆锥管螺纹(BSPT)
螺纹代号基本尺
寸
英
寸
大径
m
m
d=
D
螺距
m
m
p
每英寸
牙数
tpi
中径
m
m
d2
=D2
小径
外
螺纹
d3
牙型高
度
H1
圆弧尺
寸
r
底孔尺寸
mm
R 1/161/16"7.7230.907287.142 6.5610.5810.125 6.4 R 1/81/8"9.7280.907289.1478.5660.5810.1258.4 R 1/41/4"13.1571.3371912.30111.4450.8560.18411.2 R 3/83/8"16.6621.3371915.80614.9500.8560.18414.75 R 1/21/2"20.9551.8141419.79318.631 1.1620.24918.25 R 3/43/4"26.4411.8141425.27924.117 1.1620.24923.75 R 11"33.2492.3091131.7730.291 1.4790.31730 R 1 1/41 1/4"41.9102.3091140.43138.952 1.4790.31738.5 R 1 1/21 1/2"47.8032.3091146.32444.845 1.4790.31744.5 R 22"59.6142.3091158.13556.656 1.4790.31756 R 2 1/22 1/2"75.1842.3091173.70572.226 1.4790.31771 R 33"87.8842.3091186.40584.926 1.4790.31785.5 R 44"113.0302.30911111.551110.072 1.4790.317110.5 R 55"138.4302.30911136.951135.472 1.4790.317136 R 66"163.8302.30911162.351160.872 1.4790.317161.5
管螺纹尺寸表
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
G 1/8 1/8"9.7280.907289.1478.5660.5818.7 G 1/4 1/4"13.157 1.3371912.30111.4450.85611.6 G 3/8 3/8"16.662 1.3371915.80614.950.85615 G 1/2 1/2"20.955 1.8141419.79318.631 1.16219 G 5/8 5/8"22.911 1.8141421.74920.587 1.16220.75 G 3/4 3/4"26.441 1.8141425.27924.117 1.16224.5 G 7/8 7/8"30.201 1.8141429.03927.877 1.16228 G 1 1"33.249 2.3091131.7730.291 1.47930.5 G 1 1/8 1 1/8"37.897 2.3091136.41834.939 1.47935 G 1 1/4 1 1/4"41.91 2.3091140.43138.952 1.47939.5 G 1 3/8 1 3/8" 44.323 2.3091142.84441.365 1.47941.5 G 1 1/2 1 1/2"47.803 2.3091146.32444.845 1.47945 G 1 3/4 1 3/4"53.746 2.3091152.26750.788 1.47951 G 2 2"59.614 2.3091158.13556.656 1.47957 G 2 1/4 2 1/4"65.71 2.3091164.23162.752 1.47963