55度管螺纹标准尺寸对照表.doc

55°圆锥管螺纹(BSPT)
螺纹代号
基本尺寸
英 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
圆弧尺寸
r
底孔尺寸
mm
R 1/16
1/16"
7.723
0.907
28
7.142
6.561
0.581
0.125
6.4
R 1/8
1/8"
9.728
0.907
28
9.147
8.566
0.581
0.125
8.4
R 1/4
1/4"
13.157
1.337
19
12.301
11.445
0.856
0.184
11.2
R 3/8
3/8"
16.662
1.337
19
15.806
14.950
0.856
0.184
14.75
R 1/2
1/2"
20.955
1.814
14
19.793
18.631
1.162
0.249
18.25
R 3/4
3/4"
26.441
1.814
14
25.279
24.117
1.162
0.249
23.75
R 1
1"
33.249
2.309
11
31.77
30.291
1.479
0.317
30
R 1 1/4
1 1/4"
41.910
2.309
11
40.431
38.952
1.479
0.317
38.5
R 1 1/2
1 1/2"
47.803
2.309
11
46.324
44.845
1.479
0.317
44.5
R 2
2"
59.614
2.309
11
58.135
56.656
1.479
0.317
56
R 2 1/2
2 1/2"
75.184
2.309
11
73.705
72.226
1.479
0.317
71
R 3
3"
87.884
2.309
11
86.405
84.926
1.479
0.317
85.5
R 4
4"
113.030
2.309
11
111.551
110.072
1.479
0.317
110.5
R 5
5"
138.430
2.309
11
136.951
135.472
1.479
0.317
136
R 6
6"
163.830
2.309
11
162.351
160.872
1.479
0.317
161.5

 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"
9.728
0.907
28
9.147
8.566
0.581
8.7

G 1/4
1/4"
13.157
1.337
19
12.301
11.445
0.856
11.6

G 3/8
3/8"
16.662
1.337
19
15.806
14.95
0.856
15

G 1/2
1/2"
20.955
1.814
14
19.793
18.631
1.162
19

G 5/8
5/8"
22.911
1.814
14
21.749
20.587
1.162
20.75

G 3/4
3/4"
26.441
1.814
14
25.279
24.117
1.162
24.5

G 7/8
7/8"
30.201
1.814
14
29.039
27.877
1.162
28

G 1
1"
33.249
2.309
11
31.77
30.291
1.479
30.5

G 1 1/8
1 1/8"
37.897
2.309
11
36.418
34.939
1.479
35

G 1 1/4
1 1/4"
41.91
2.309
11
40.431
38.952
1.479
39.5

G 1 3/8
1 3/8"
44.323
2.309
11
42.844
41.365
1.479
41.5

G 1 1/2
1 1/2"
47.803
2.309
11
46.324
44.845
1.479
45

G 1 3/4
1 3/4"
53.746
2.309
11
52.267
50.788
1.479
51

G 2
2"
59.614
2.309
11
58.135
56.656
1.479
57

G 2 1/4
2 1/4"
65.71
2.309
11
64.231
62.752
1.479
63

G 2 1/2
2 1/2"
75.184
2.309
11
73.705
72.226
1.479
72.5

G 2 3/4
2 3/4"
81.534
2.309
11
80.055
78.576
1.479
79

G 3
3"
87.884
2.309
11
86.405
84.926
1.479
85.

G 3 1/4
3 1/4"
93.98
2.309
11
92.501
91.022
1.479
91

G 3 1/2
3 1/2"
100.33
2.309
11
98.351
97.372
1.479
97.75

G 3 3/4
3 3/4"
106.68
2.309
11
105.201
103.722
1.479
104

G 4
4"
113.03
2.309
11
111.55
110.072
1.479
110.5

G 4 1/2
4 1/2"
125.73
2.309
11
124.251
122.772
1.479
123

G 5
5"
138.43
2.309
11
136.951
135.472
1.479
136

G 5 1/2
5 1/2"
151.13
2.309
11
149.651
148.172
1.479
148.5

G 6
6"
163.83
2.309
11
162.351
160.872
1.479
161.5

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

G 1/8
1/8"
9.728
0.907
28
9.147
8.566
0.581
8.7

G 1/4
1/4"
13.157
1.337
19
12.301
11.445
0.856
11.6

G 3/8
3/8"
16.662
1.337
19
15.806
14.95
0.856
15

G 1/2
1/2"
20.955
1.814
14
19.793
18.631
1.162
19

G 5/8
5/8"
22.911
1.814
14
21.749
20.587
1.162
20.75

G 3/4
3/4"
26.441
1.814
14
25.279
24.117
1.162
24.5

G 7/8
7/8"
30.201
1.814
14
29.039
27.877
1.162
28

G 1
1"
33.249
2.309
11
31.77
30.291
1.479
30.5

G 1 1/8
1 1/8"
37.897
2.309
11
36.418
34.939
1.479
35

G 1 1/4
1 1/4"
41.91
2.309
11
40.431
38.952
1.479
39.5

G 1 3/8
1 3/8"
44.323
2.309
11
42.844
41.365
1.479
41.5

G 1 1/2
1 1/2"
47.803
2.309
11
46.324
44.845
1.479
45

G 1 3/4
1 3/4"
53.746
2.309
11
52.267
50.788
1.479
51

G 2
2"
59.614
2.309
11
58.135
56.656
1.479
57

G 2 1/4
2 1/4"
65.71
2.309
11
64.231
62.752
1.479
63

G 2 1/2
2 1/2"
75.184
2.309
11
73.705
72.226
1.479
72.5

G 2 3/4
2 3/4"
81.534
2.309
11
80.055
78.576
1.479
79

G 3
3"
87.884
2.309
11
86.405
84.926
1.479
85.

G 3 1/4
3 1/4"
93.98
2.309
11
92.501
91.022
1.479
91

G 3 1/2
3 1/2"
100.33
2.309
11
98.351
97.372
1.479
97.75

G 3 3/4
3 3/4"
106.68
2.309
11
105.201
103.722
1.479
104

G 4
4"
113.03
2.309
11
111.55
110.072
1.479
110.5

G 4 1/2
4 1/2"
125.73
2.309
11
124.251
122.772
1.479
123

G 5
5"
138.43
2.309
11
136.951
135.472
1.479
136

G 5 1/2
5 1/2"
151.13
2.309
11
149.651
148.172
1.479
148.5

G 6
6"
163.83
2.309
11
162.351
160.872
1.479
161.5