55度管螺纹标准尺寸对照表.docx

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

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

R1/16

1/16"

7.723

0.907

28

7.142

6.561

0.581

0.125

6.4

R1/8

1/8"

9.728

0.907

28

9.147

8.566

0.581

0.125

8.4

R1/4

1/4"

13.157

1.337

19

12.301

11.445

0.856

0.184

11.2

R3/8

3/8"

16.662

1.337

19

15.806

14.950

0.856

0.184

14.75

R1/2

1/2"

20.955

1.814

14

19.793

18.631

1.162

0.249

18.25

R3/4

3/4"

26.441

1.814

14

25.279

24.117

1.162

0.249

23.75

R1

1"

33.249

2.309

11

31.77

30.291

1.479

0.317

30

R11/4

11/4"

41.910

2.309

11

40.431

38.952

1.479

0.317

38.5

R11/2

11/2"

47.803

2.309

11

46.324

44.845

1.479

0.317

44.5

R2

2"

59.614

2.309

11

58.135

56.656

1.479

0.317

56

R21/2

21/2"

75.184

2.309

11

73.705

72.226

1.479

0.317

71

R3

3"

87.884

2.309

11

86.405

84.926

1.479

0.317

85.5

R4

4"

113.030

2.309

11

111.551

110.072

1.479

0.317

110.5

R5

5"

138.430

2.309

11

136.951

135.472

1.479

0.317

136

R6

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

BritishPipeThread（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

G1/8

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

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

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

G1/8

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