Tolerances of Slip On Flanges ASME B16.5
Outside Diameter (Note)
|
Inside Diameter |
OD≤ 610mm = ± 2.0 mm | > 610 mm= ± 3.0 mm |
NPS ≤ 10 = + 1.0 mm / -0 | NPS≥ 12 = +1.5 mm / -0 |
Diameter of Contact Face |
Outside Diameter of Hub (Note) |
2 mm RF= ± 1 mm |
NPS ≤ 12 = + 2.4 mm / -1.6mm | NPS≥ 14 = ± 3.2 mm |
7 mm RF, Tongue & Groove / Male-Female = ± 0.5 mm |
|
Length through Hub (Note) |
Drilling |
NPS ≤ 18 = + 3.2 mm / - 0.8 mm |NPS ≥ 20 = + 4.8 mm / - 1.6 mm |
Bolt Circle = 1.6 mm | Bolt Hole Spacing = ± 0.8 mm |
Thickness |
NPS≤ 18 = + 3.0 mm / - 0 | NPS≥ 20 = + 5.0 mm / - 0 |
Eccentricity of Bolt Circle with Respect to Facing |
NPS≥ 6 = + 4.0 mm / - 1.0 mm |
≤ 2½ = 0.8 mm max. | ≥ 3 = 1.6 mm max |
Note:These tolerances are not listed in ASME B16.5