Dimensional tolerances
Ring type Slip-on and Blind flanges | HUB type slip-on | ||||
O.D. | <=24" | +/- 0.6"(1.6mm) | O.D. | <=24" | +/- 0.6"(1.6mm) |
>24" | +/- .12"(3.2mm) | >24" | +/- .12"(3.2mm) | ||
I.D. | Socket-Welding | 10" and Samller | I.D. | 10" and Samller | +.03"(0.8mm) |
Slip-on and | 12" and Larger | 12"-18" | +/-.06"(1.6mm) | ||
20"-42" | +.12"(3.2mm) | ||||
O.D. of Hub | <=12" | +.09"(2.4mm), | Diameter of | 0.06" Raised Face | +/-.03"(0.8mm) |
14"-42" | +/-.12"(3.2mm) | ||||
Diameter of Contact face | 0.06" Raised Face | +/- .03"(0.8mm) | Diameter of Hub at base | X<=24" | +/-.06"(1.6mm) |
X>24" | +/-.12"(3.2mm) | ||||
Deameter of Contact face | <=10" | +.03"(0.8mm), | Diameter of Hub at point of Welding | <=5" | +.09"(2.4mm), |
12"-42" | +.06"(1.6mm), | >=6" | +.16"(4.0mm), | ||
Drilling | Bolt Circle | 1/2"-24" | Drilling | Bolt Circle | 1/2"-24" |
+/-.06"(1.6mm) | +/-.06"(1.6mm) | ||||
Bolt hole | +/-.03"(0.8mm) | Bolt hole | +/-.03"(0.8mm) | ||
Eccentricity of Bolt circle with respect to bore | .03" Max. | Eccentricity of Bolt circle with respect to bore | .03" Max. | ||
Thickness | 18"& Small | +.12"(3.2mm),-0" | Thickness | 18"& Small | +.12"(3.2mm),-0" |
20"-42" | +.19"(1.6mm) | 20"-42" | +.19"(1.6mm) | ||
Length Thru Hub | <=10" | +/-.06"(1.6mm) | Length Thru Hub | <=10" | +/-.06"(1.6mm) |
12"-42" | +/1.12"(3.2mm) | 12"-42" | +/1.12"(3.2mm) | ||
These tolerances are a part of ANSI B16.5 and AWWA C207-01 Sec. 4.2 except where noted otherwise. The limits given are maximum. Rigid inspection procedure assures the maintenance of high standards of accuracy in regular day to day production.
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