Tolerance Chart
All Fittings				90° and 45° Elbows and Tees	Reducers and Lap. Joint Stub Ends	Caps	180° Returns			Lap Joint Stub Ends
NPS	Outside(1) Diameter at Bevel	Inside(2) Diameter at End	Wall(2) Thickness	C to E Dimension A, B, C, M.	Over all Length F,H	Over all Dimension E	C to C Dimension O	Back to Face Ends K	Alignment of Ends U	OD of Lap G	Thickness of Lap T	Fillet Radius of Lap R	OD of Barrel
1/2 to 2 1/2	+1	+0.8	Not less than 87.5% of Nominal thickness	+2	+2	+4	+7	+7	+1	+0-1	+2-0	+0-1	Refer Below Table
3 to 3 1/2	+1	+1.6		+2	+2	+4	+7	+7	+1	+0-1	+2-0	+0-1
4	+2-1	+1.6		+2	+2	+4	+7	+7	+1	+0-1	+2-0	+0-2
5 to 6	+3-1	+1.6		+2	+2	+7	+7	+7	+1	+0-1	+2-0	+0-2
8	+2	+1.6		+2	+2	+7	+7	+7	+1	+0-1	+2-0	+0-2
10	+4-3	+3.2		+2	+2	+7	+10	+7	+2	+0-2	+2-0	+0-2
12 to 18	+4-3	+3.2		+3	+3	+7	+10	+7	+2	+0-2	+2-0	0-2
20 to 24	+6-5	+4.8		+3	+3	+7	+10	+7	+2	+0-2	+2-0	+0-2
26 to 30	+7-5	+4.8		+3	+3	+10
32 to 48	+7-5	+4.8		+3	+3	+10

Outside Diameter of Barrel
Max.	Min.
0.896	0.809
1.106	1.019
1.376	1.284
1.716	1.629
1.966	1.869
2.456	2.344
2.966	2.844
3.596	3.469
4.096	3.969
4.593	4.469
5.683	5.532
6.743	6.594
8.743	8.594
10.913	10.719
12.913	12.719
14.170	13.969
16.180	15.969
18.190	17.969
20.240	19.969
22.240	21.969
24.240	23.969

Nominal Wall Thickness (f)	End Preparation
less than X	Cut square ur slightly chamber, at mtr’s option
X’ I0 0.88 incl. [22]	Plain bevel as in Sketch “a" above
more than 0.88 (22)	Compound bevel as in Sketch ”b”aboye
X* = 0.19 (5) Carbon steel cfierritic allay steal and 0.12(4) foraustenitic alloy steel.
Dimensions in parentheses are in millimeters. Others are in inches.
FIGURE 1 WELDING BEVELS AND ROOT FACE

Nominal Pipe	Angularity Tol.
	Off Angle	Off Plane
Size	Q	P
1/ 2 to 4	+1	+2
5 to 8	+2	+4
10 to 12	+8	+5
14 to 16	+8	+7
18 to 24	+4	+10
26 to 30	+5	+10
32 to 42	+5	+13
44 to 48	+5	+20