55度管螺纹标准尺寸对照表.docx
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55度管螺纹标准尺寸对照表.docx
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55度管螺纹标准尺寸对照表
55°圆锥管螺纹(BSPT)
螺纹代号R1/16R1/8R1/4R3/8R1/2R3/4R1R11/4R11/2R2R21/2R3R4R5R6
基本尺寸英
寸
大mmd=D
螺mmp7.7230.9079.7280.90713.1571.33716.6621.33720.9551.81426.4411.81433.2492.30941.9102.30947.8032.30959.6142.30975.1842.30987.8842.309113.0302.309138.4302.309163.8302.309
每英寸牙数
tpi
中径
mmd2=D2
小径
外螺纹
d3
牙型高度
H1
圆弧尺寸
r
底孔尺寸
mm
1/16
28
7.142
6.561
0.581
0.125
6.4
1/8
28
9.147
8.566
0.581
0.125
8.4
1/4
19
12.301
11.445
0.856
0.184
11.2
3/8
19
15.806
14.950
0.856
0.184
14.75
1/2
14
19.793
18.631
1.162
0.249
18.25
3/4
14
25.279
24.117
1.162
0.249
23.75
1
11
31.77
30.291
1.479
0.317
30
11/4
11
40.431
38.952
1.479
0.317
38.5
11/2
11
46.324
44.845
1.479
0.317
44.5
2
11
58.135
56.656
1.479
0.317
56
21/2
11
73.705
72.226
1.479
0.317
71
3
11
86.405
84.926
1.479
0.317
85.5
4
11
111.551
110.072
1.479
0.317
110.5
5
11
136.951
135.472
1.479
0.317
136
6
11
162.351
160.872
1.479
0.317
161.5
55°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G1/8
基本尺寸1/8
大径
mmd=D9.728
螺距mmp0.907
每英寸牙数
tpi28
中径
mmd2=D29.147
小径
外螺纹d38.566
牙型高度
H10.581
底孔尺寸
mm8.7
G1/4
1/4
13.157
1.337
19
12.301
11.445
0.856
11.6
G3/8
3/8
16.662
1.337
19
15.806
14.95
0.856
15
G1/2
1/2
20.955
1.814
14
19.793
18.631
1.162
19
G5/8
5/8
22.911
1.814
14
21.749
20.587
1.162
20.75
G3/4
3/4
26.441
1.814
14
25.279
24.117
1.162
24.5
G7/8
7/8
30.201
1.814
14
29.039
27.877
1.162
28
G1
1
33.249
2.309
11
31.77
30.291
1.479
30.5
G11/8
11/8
37.897
2.309
11
36.418
34.939
1.479
35
G11/4
11/4
41.91
2.309
11
40.431
38.952
1.479
39.5
G13/8
13/8
44.323
2.309
11
42.844
41.365
1.479
41.5
G11/2
11/2
47.803
2.309
11
46.324
44.845
1.479
45
G13/4
13/4
53.746
2.309
11
52.267
50.788
1.479
51
G2
2
59.614
2.309
11
58.135
56.656
1.479
57
G21/4
21/4
65.71
2.309
11
64.231
62.752
1.479
63
G21/2
21/2
75.184
2.309
11
73.705
72.226
1.479
72.5
G23/4
23/4
81.534
2.309
11
80.055
78.576
1.479
79
G3
3
87.884
2.309
11
86.405
84.926
1.479
85.
G31/4
31/4
93.98
2.309
11
92.501
91.022
1.479
91
G31/2
31/2
100.33
2.309
11
98.351
97.372
1.479
97.75
G33/4
33/4
106.68
2.309
11
105.201
103.722
1.479
104
G4
4
113.03
2.309
11
111.55
110.072
1.479
110.5
G41/2
41/2
125.73
2.309
11
124.251
122.772
1.479
123
G5
5
138.43
2.309
11
136.951
135.472
1.479
136
G51/2
51/2
151.13
2.309
11
149.651
148.172
1.479
148.5
G6
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
BritishPipeThread(惠氏管螺纹)--圆柱(BSPP/BSPF)
螺纹代号
基本尺寸
mm
d=D
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
G1/8
1/8
9.728
0.907
28
9.147
8.566
0.581
8.7
G1/4
1/4
13.157
1.337
19
12.301
11.445
0.856
11.6
G3/8
3/8
16.662
1.337
19
15.806
14.95
0.856
15
G1/2
1/2
20.955
1.814
14
19.793
18.631
1.162
19
G5/8
5/8
22.911
1.814
14
21.749
20.587
1.162
20.75
G3/4
3/4
26.441
1.814
14
25.279
24.117
1.162
24.5
G7/8
7/8
30.201
1.814
14
29.039
27.877
1.162
28
G1
1
33.249
2.309
11
31.77
30.291
1.479
30.5
G11/8
11/8
37.897
2.309
11
36.418
34.939
1.479
35
G11/4
11/4
41.91
2.309
11
40.431
38.952
1.479
39.5
G13/8
13/8
44.323
2.309
11
42.844
41.365
1.479
41.5
G11/2
11/2
47.803
2.309
11
46.324
44.845
1.479
45
G13/4
13/4
53.746
2.309
11
52.267
50.788
1.479
51
G2
2
59.614
2.309
11
58.135
56.656
1.479
57
G21/4
21/4
65.71
2.309
11
64.231
62.752
1.479
63
G21/2
21/2
75.184
2.309
11
73.705
72.226
1.479
72.5
G23/4
23/4
81.534
2.309
11
80.055
78.576
1.479
79
G3
3
87.884
2.309
11
86.405
84.926
1.479
85.
G31/4
31/4
93.98
2.309
11
92.501
91.022
1.479
91
G31/2
31/2
100.33
2.309
11
98.351
97.372
1.479
97.75
G33/4
33/4
106.68
2.309
11
105.201
103.722
1.479
104
G4
4
113.03
2.309
11
111.55
110.072
1.479
110.5
G41/2
41/2
125.73
2.309
11
124.251
122.772
1.479
123
G5
5
138.43
2.309
11
136.951
135.472
1.479
136
G51/2
51/2
151.13
2.309
11
149.651
148.172
1.479
148.5
G6
6
163.83
2.309
11
162.351
160.872
1.479
161.5
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