Welding Neck

Nominal

Pipe Size

Common Dimensions

Dia. of hub at bevel

Length thru hub

Dia. of bore

Outside dia. of flange

Thickness of flange

Diameter of hub at  face

Diameter

of raised

face

Welding

neck

Slip-on, screwed, socket

Lap joint

Welding

neck

Slip-on

socket

Lap joing

O

Q

X

R

H

Y_W

Y_S

Y_L

B_W

B_S

B_L

1/2

133.4

30.2

42.9

34.9

21.3

73.0

39.7

39.7

-

22.4

22.9

3/4

139.7

31.8

50.8

42.9

26.7

79.4

42.9

42.9

-

27.7

28.2

1

158.8

34.9

57.2

50.8

33.5

88.9

47.6

47.6

-

34.5

35.1

1-1/4

184.2

38.1

73.0

63.5

42.2

95.3

52.4

52.4

-

43.2

43.7

1-1/2

203.2

44.5

79.4

73.0

48.3

111.1

60.3

60.3

-

49.5

50.0

2

235.0

50.8

95.3

92.1

60.5

127.0

69.9

69.9

-

62.0

62.5

2-1/2

266.7

57.2

114.3

104.8

73.2

142.9

79.4

79.4

-

74.7

75.4

3

304.8

66.7

133.4

127.0

88.9

168.3

92.1

92.1

-

90.7

91.4

4

355.6

76.2

165.1

157.2

114.3

190.5

108.0

108.0

-

116.1

116.8

5

419.1

85.7

203.2

185.7

141.2

228.6

130.2

130.2

-

143.8

144.5

6

482.6

108.0

235.0

215.9

168.4

273.1

152.4

152.4

-

170.7

171.5

8

552.5

127.0

304.8

269.9

219.2

317.5

177.8

177.8

-

221.5

222.3

10

673.1

165.1

374.7

323.9

273.1

419.1

228.6

228.6

-

276.4

277.4

12

762.0

184.2

441.3

381.0

323.9

463.6

254.0

254.0

-

327.2

328.2

Nominal

Pipe Size

Radius of fillet

Minimum thread length

Depth of socket

Drilling

Length of bolts

Dia. of bolt circle

Number of bolts

Diameter

of bolts

Diameter of bolt holes

Stud bolts

Male and female tongue and groove

1/4" raised face

Ring joint

r

T

D

C

1/2

3.2

28.6

-

82.6

4

19.1

22.2

120.7

120.7

114.3

3/4

3.2

31.8

-

95.3

4

19.1

22.2

120.7

120.7

114.3

1

3.2

34.9

-

108.0

4

22.2

25.4

133.4

133.4

127.0

1-1/4

4.8

38.1

-

130.2

4

25.4

28.6

146.1

152.4

139.7

1-1/2

6.4

44.5

-

146.1

4

25.4

28.6

165.1

161.9

158.8

2

7.9

50.8

-

171.5

8

28.6

31.8

171.5

177.8

165.1

2-1/2

7.9

57.2

-

196.9

8

28.6

31.8

190.5

196.9

184.2

3

9.5

63.5

-

228.6

8

31.8

34.9

215.9

222.3

209.6

4

11.1

69.9

-

273.1

8

38.1

41.3

247.7

260.4

235.0

5

11.1

76.2

-

323.9

8

44.5

47.6

292.1

311.2

285.8

6

12.7

82.6

-

368.3

8

50.8

54.0

342.9

355.6

336.6

8

12.7

95.3

-

438.2

12

50.8

54.0

381.0

393.7

374.7

10

12.7

108.0

-

539.8

12

63.5

66.7

482.6

508.0

476.3

12

12.7

120.7

-

619.1

12

69.9

73.0

533.4

558.8

527.1

Nominal

Pipe Size

Counter bore screwed flange min.

Approximate weights (kg)

S

Welding neck

Slip on

Screwed

Socket welding

Lap joint

Blind

1/2

23.6

3.6

3.2

3.2

-

3.2

3.2

3/4

29.0

4.1

4.1

4.1

-

3.6

4.5

1

35.8

5.9

5.4

5.4

-

5.4

5.4

1-1/4

44.5

9.1

8.2

8.2

-

7.7

8.2

1-1/2

50.5

12.7

11.3

11.3

-

10.9

11.3

2

63.5

19.0

17.2

17.2

-

16.8

17.7

2-1/2

76.2

23.6

24.9

24.9

-

24.0

25.4

3

92.2

42.6

37.6

37.6

-

36.2

39.0

4

117.6

66.1

57.5

57.5

-

55.3

60.2

5

144.5

110.5

95.1

95.1

-

92.4

101.0

6

171.5

171.2

146.3

146.3

-

142.2

156.3

8

222.3

260.9

219.7

219.7

-

213.4

241.4

10

276.4

483.8

419.0

419.0

-

406.3

464.3

12

328.7

728.4

588.9

588.9

-

571.7

663.2