Tolerance As Per B 16.9

Nominal Pipe Size All Fittings 90 Deg. and 45 Deg. Elbows and Tees Reducers and Lap. Joint Stub Ends Caps 180 Deg. Returns Lap. Joint Ends
Outside (1) Diametar at Bevel Inside (2) Diametar at End Wall (2) Thickness Center To End Dimension A, B.C. M, Over all Lenth F, H Over all Dimension E Centre all Dimension 0 Back to Face Ends K Alignment of Ends U outside Daimeter of Lap G Thick ness of Lap Fillet radious of Lap R Outside Diameter Barrel
1/2" to 2 1/2" ± 1 ± 8 Not Less than 87.5% of Nominal ± 2 ± 2 ± 4 ± 7 ± 7 ± 1 ± 0-1 Not Less than nominal pipe wall thickness + 0-1 Refer Table Below
3" to 3 1/2" ± 1 ± 1.6 ± 2 ± 2 ± 4 ± 7 ± 7 ± 1 ± 0-1 + 0-1
4" + 2-1 ± 1.6 ± 2 ± 2 ± 4 + 7 ± 7 ± 1 ± 0-1 + 0-2
5" to 6" + 3-1 ± 1.6 ± 2 ± 2 ± 7 ± 7 ± 1 ± 1 ± 0-1 + 0-2
8" ± 2 ± 1.6 ± 2 ± 2 ± 7 ± 7 ± 7 ± 1 ± 0-1 + 0-2
10" I + 4-3 ± 3.2 ± 2 ± 2 ± 7 ± 10 ± 7 ± 2 ± 0-2 + 0-2
12" to 18" + 4-3 ± 3.2 ± 3 ± 3 ± 7 ± 10 ± 7 ± 2 ± 0-2 + 0-2
20" to 24" + 4-3 ± 4.8 ± 3 ± 3 ± 7 ± 10 ± 7 ± 2 ± 0-2 + 0-2
26" to 30" + 7-5 ± 4.8 ± 3 ± 3 ± 10 - - - - -
32" to 48" + 7-5 ± 4.8 ± 5 ± 5 ± 10 - - - - -

All Dimension are in millimeters
(1) Out-of round is the sum of absolute values of plus and minus tolerance
(2) The Inside daimeter and the nominal wall thicknessess at ends are to be specified by the purchaser