Dimensions in Inches Weld Neck Flanges and Stud Bolts ASME B16.5 Class 1500


Weld Neck flange

OTHER PRESSURE CLASSES

150
300
400
600
900
1500
NPS Dia
D
THK
B
Dia
A
Dia
OD
Height
H
Dia
K
Dia
L
1/2 4.75 0.88 1.5 0.84 2.38 3.25 7/8
3/4 5.12 1 1.75 1.05 2.75 3.5 7/8
1 5.88 1.12 2.06 1.32 2.88 4 1
1.1/4 6.25 1.12 2.5 1.66 2.88 4.38 1
1.1/2 7 1.25 2.75 1.9 3.25 4.88 1.1/8
2 8.5O 1.5 4.12 2.38 4 6.5 1
2.1/2 9.62 1.62 4.88 2.88 4.12 7.5 1.1/8
3 10.5 1.88 5.25 3.5 4.62 8 1.1/4
4 12.25 2.12 6.38 4.5 4.88 9.5 1.3/8
5 14.75 2.88 7.75 5.56 6.12 11.5 1.5/8
6 15.5 3.25 9 6.63 6.75 12.5 1.1/2
8 19 3.62 11.5 8.63 8.38 15.5 1.3/4
10 23 4.25 14.5 10.75 10 19 2
12 26.5 4.88 17.75 12.75 11.12 22.5 2.1/8
14 29.5 5.25 19.5 14 11.75 25 2.3/8
16 32.5 5.75 21.75 16 12.25 27.75 2.5/8
18 36 6.38 23.5 18 12.88 30.5 2.7/8
20 38.75 7 25.25 20 14 32.75 3.1/8
24 46 8 30 24 16 39 3.5/8

Important Information

Stud Bolts for the flanges above

NPS No of
Bolt
Holes
Dia
Stud
Bolts
Length
Stud
Bolts
1/2 4 3/4 4.25
3/4 4 3/4 4.5
1 4 7/8 5
1.1/4 4 7/8 5
1.1/2 4 1 5.5
2 8 7/8 5.75
2.1/2 8 1 6.25
3 8 1.1/8 7
4 8 1.1/4 7.75
5 8 1.1/2 9.75
6 12 1.3/8 10.25
8 12 1.5/8 11.5
10 12 1.7/8 13.25
12 16 2 14.75
14 16 2.1/4 16
16 16 2.1/2 17.5
18 16 2.3/4 19.5
20 16 3 21.25
24 16 3.1/2 24.25

Notes..

  • Dimensions are in inches unless otherwise indicated.
  • The length of the Stud Bolt does not include the height of the chamfers (points).
  • The length of the Stud Bolts includes one Spiral Wound Gasket with a 4.5mm thick sealing element, which is compressed to 3mm while tightening the Raised Face flange connection.
  • ID - Depending on the wall thickness of the pipe, must be specified by the purchaser.

Dimensional Tolerances Weld Neck Flanges ASME B16.5

Welding bevel
Outside Diameter *
Tolerances not listed in ASME B16.5 2013
≤24
0.06 in (1.6 mm)
>24
±0.12 in (±3.2 mm)
Diameter Hub at Base
≤24
0.06 in (1.6 mm)
>24
±0.12 in (±3.2 mm)
Inside Diameter
≤10
±0.03 in (±0.8 mm)
12 thru 18
0.06 in (1.6 mm)
≥20
±0.12 in / -0.06 in
(+3.2 mm / -1.6 mm)
Diameter Hub at Point of Welding
≤5
±0.09 in / -0.03 in
(+2.4 mm / -0.8 mm)
≥6
+0.15 in / -0.03 in
(+4.0 mm / -0.8 mm)

Drilling
Bolt Circle
0.06 in (1.6 mm)
Bolt Hole Spacing
±0.03 in (±0.8 mm)
Eccentricity Bolt Circle
≤2.1/2
0.03 in max (0.8 mm max)
≥3
0.06 in max (1.6 mm max)
Thickness
≤18
+0.12 in / -0 (+3.2 mm / -0)
≥20
+0.18 in / -0 (+4.8 mm / -0)
Length thru Hub
≤10
0.06 in (1.6 mm)
≥12
±0.12 in (±3.2 mm)
Diameter Contact Face
0.06 in RF (1.6 mm)
±0.03 in (±0.8 mm)
0.25 in RF (6.35 mm)
±0.01 in (±0.4 mm)

Tongue and Groove
±0.01 in (±0.4 mm)
Male-Female
±0.01 in (±0.4 mm)


Studs are measured parallel to the axis (L) from the first to the thread without the chamfers (points). S = free threads equals 1/3 time bolt dia

Measuring lengths of Stud Bolts

 

Hex bolts are measured from under the head to the top of de bolt


Measuring lengths of Hex bolts

Related Post(s)

Dimensions Weld Neck Flanges Metric Standard
Dimensions Weld Neck Flanges Metric Standard
Flanges - ASME B16.5 - Metric Dimensions - Weld Neck/Stud Bolts Class 150 to Class 2500...





Explore the World of Piping


© Werner Sölken 2008 -  
All rights reserved.
www.wermac.org uses Google Analytics

Privacy Policy

I must be old. I still believe in respect.