|
Tolerances for Welding Neck Flanges
|
|
Outside Diameter
|
24" and smaller
|
± 1.6 mm.
|
|
26" and larger
|
± 3.2 mm.
|
|
|
Inside Diameter
|
10" and smaller
|
± 0.8 mm.
|
|
12" a 18"
|
± 1.6 mm.
|
|
|
20" and larger
|
+ 3.2 mm. - 1.6 mm.
|
|
|
Diameter of
Contact Face |
Raised face 1.6 mm.
|
± 0.8 mm.
|
|
Raised face 6.35 mm.
|
± 0.5 mm.
|
|
|
Tongue and Groove
|
± 0.5 mm.
|
|
|
Male and Female
|
± 0.5 mm.
|
|
|
Diameter of Hub at the point of Welding
|
5" and smaller
|
+ 2.4 mm. - 0.8 mm.
|
|
6" and larger
|
+ 4 mm. - 0.8 mm.
|
|
|
Diameter of Hub at Base
|
Diameter at base 24" = 609.6 mm and smaller.
|
± 1.6 mm.
|
|
Diameter at base larger than 24" = 609.6 mm.
|
± 3.2 mm.
|
|
|
Drilling
|
Bolt Circle
|
±1.6 mm.
|
|
Bolt hole spacing
|
± 0.8 mm.
|
|
|
Excentricity of Bolt-circle facing with respect to bore
|
≤ 2.1/2" 0.8 mm.
≥ 3" 1.6 mm. |
|
|
Width of Land
|
For all Sizes
|
± 0.8 mm.
|
|
Angle of Bevel
|
For all Sizes
|
± 2º30'
|
|
Overall Height
|
10" and smaller
|
± 1.6 mm.
|
|
12" and larger
|
± 3.2 mm.
|
|
|
Thickness
|
18" and smaller
|
+ 3.2 mm. - 0 mm.
|
|
20" and larger
|
+ 4.8 mm. - 0 mm.
|
Rua Pedro Paulo Celestino, 118 CEP: 09950-360 – Diadema/SP - coneforja@coneforja.com.br
Fone: (55 11) 4070-5610 - Fax: (55 11) 4070-5611 Rua Pedro Paulo Celestino, 118 - CEP: 09950-360 – Diadema/SP W.V. Comunicação