Dimensional Tolerances For Flanges
We supply superior quality of flanges available in
various shapes, material and pressure rating to satisfy the varying
requirement of the end user. Our flanges are used for piping pressure and
have proven record in industries like food, chemical and pharmaceuticals.
The ease in fitting and welding reduces the fabrication cost of the users.
Dimensional Tolerances
 |
| Threaded,
Socket-Welding, Slip-on, Lap Joint and Blind |
| Outside
|
When
O.D is 24" or Less |
±
1/16 (16 mm) |
| Diameter
|
When
O.D is Over 24" |
±
1/8" (3.2 mm) |
| Inside
|
Threaded
|
Within
limits on boring guage |
| Diameter
|
Socket
– Welding, Slip – on and Lap joint |
10"
& Smaller + 1/32" (0.8 mm)- 0" 12" & Larger +
1/16" (1.6 mm)-0" |
| Outside
Diameter of Hub |
12"
and Smaller |
+
1/32" (0.8 mm) - 1/16" (1.6mm) |
| |
14"
and Larger |
±
1/8" (3.2 mm) |
| Diameter
of Contact Face |
1/16"
Raised Face |
±
1/32" (0.8 mm) |
| |
1/4"
Raised Face Tongue & Groove Male, Female |
±
1/64" (0.4 mm) |
| Diameter
of Counterbore |
Same as for Inside Diameter
|
| |
Bolt
Circle |
±
1/16" (1.6 mm) |
| |
Bolt
hole Spacing |
±
1/32" (0.8 mm) |
| Drilling
|
Eccentricity
of Both Circle with Respect to Facing |
21/2"
& Smaller 1/32" (0.8 mm ) max 3" & Larger 1/16"
(1.6 mm) max |
| |
Eccentricity
of Both Circle with Respect to Bore |
1/32"
(0.8 mm ) max |
| Thickness
|
18"
and Smaller |
+
1/8" (3.2 mm) -0" |
| |
20"
and Larger |
+
3/16" (4.8 mm)-0" |
| Length
|
10"
and Smaller |
±
1/16" (1.6 mm) |
| Thru
Hub |
12"
and Larger . |
±
1/8" (3.2 mm) |
|
|
|
| Welding Neck |
| Outside |
When O.D is 24" or Less |
± 1/16 (16 mm) |
| Diameter |
When O.D is Over 24" |
± 1/8" (3.2 mm) |
| Inside |
10" and Smaller |
+ 1/32" (0.8 mm) |
| Diameter |
12" thru 18" |
+ 1/16" (1.6 mm) |
| |
20" and Larger |
+ 1/8" (3.2 mm) - 1/16" (1.6 mm) |
| Diameter of Contact Face |
1/16" Raised Face |
± 1/32" (0.4 mm) |
| |
1/4" Raised Face Tongue & Groove Male, Female
|
+ 1/64" (0.4 mm) |
| Diameter of Hub at Base |
When Hub Base is 24" or Smaller |
= 1/16" (1.6 mm) |
| |
When Hub Base is Over 24" |
- 1/8" (3.2 mm) |
| Diameter of Hub at Point of Welding |
5" and Smaller |
+ 3/32" (2.4 mm) - 1/32" (0.8 mm) |
| |
6" and Larger |
+ 5/32" (4.0 mm) -1/32" (0.8 mm) |
| |
Bolt Circle |
+ 1/16" (1.6 mm) |
| Drilling |
Bolt hole spacing |
+ 1/32" (0.8 mm) |
| |
Eccentricity of Bolt Circle with Respect to Facing
|
21/2" & Smaller 1/32" (0.8 mm ) max 3"
& Larger 1/16" (1.6 mm) max |
| |
Eccentricity of Bolt Circle with Respect to Bore |
1/32" (0.8 mm ) max |
| |
Eccentricity of facing with Respect to Bore |
1/32" (0.8 mm) max |
| Thickness |
18" and Smaller |
+ 1/8" (3.2 mm) -0" |
| |
20" and Larger |
+ 3/16" (4.8 mm)-0" |
| Length |
10" and Smaller |
± 1/16" (1.6 mm) |
| Thru Hub |
12" and Larger . |
± 1/8" (3.2 mm) |
|
|
The buttweld pipe fitting manufactured by us serve
various applications because of their high functionality and technical
specifications. Years of experience and knowledge of metal properties,
welding procedure and quality control has helped to set a standard expected
by our customers.
- Available in variable formation like 45, 90, 180, L.R./ S.R Elbows,
Equal/Unequal Tees, Barred tees, Reducers, stubends, caps, cross, short
radius bends jacketed.
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