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Flange Dimensions

Flange Dimensions

Dimensional data for ASME B16.5, EN 1092-1, and JIS B2220 flanges including Weld Neck, Slip-On, Blind, and Socket Weld.

Schematic

Unit: mmWeld Neck Flange (WNF)
No schematic

Weight & Dimensions

ASME B16.5
0.48kg
Approximate
Surface Area: 0.020 m² (approx.)
1/2"·Class 150

Dimensions (mm)

DO.D. Flange
88.9 mm
TMin. Flange Thickness
9.6 mm
GO.D. Raised Face
34.9 mm
XHub Diameter at Base
30 mm
AHub Dia. at Welding Point
21.3 mm
KBolt Circle Diameter
60.3 mm
nNumber of Bolts
4
dBolt Hole Dia.
15.9 mm
lBolt Dia.
12.7 mm
LStud Bolt Length
55 mm
YLength through Hub
46 mm
rr
2 mm
BBore (pipe I.D.)
15.8 mm
FacingFacing Type
RF
Machine Bolt LengthMachine Bolt Length
50 mm

Pressure–Temperature Rating

°C / bar

ASME B16.5-2020 · Table 2-1.1 · Group 1.1 · Carbon Steel

Range: -29 to 538
-29538

Rated Pressure

Class 150
19.6bar
At 38 °C

Interpolated linearly between listed temperatures per ASME B16.5 para. 2.3. Ratings apply to the flange; a joint’s limit may be lower (gasket/bolting).