Dimensional Tolerances for Fittings

Dimensional Tolerances for Fittings

All Fittings Elbows and Tees 180° Returns Elbows and Tees Reducers and Stub Ends Stub Ends Caps
Nominal Pipe Size Outside Diameter at Bevel Inside Diameter at Ends Wall Thickness Center-to-End Length
A,B,C,D,M
Center-to-Center Length
O, O1
Back-to-Face Length
K, K1
Align- ment of Ends Off Angle Off Plane Overall Length
F,H
Outside Diameter of Lap
G
Radius
R
Overall Length
E
1/2 - 2 1/2 +0.06 / -0.03 ±0.03 Not Less Than 87½% of the Nominal Thickenss Specified ±0.06 ±0.25 ±0.25 ±0.03 0.03 0.06 ±0.06 +0 / -0.03 +0 / -0.03 ±0.12
3 - 3 1/2 ±0.06 ±0.06 ±0.06 ±0.25 ±0.25 ±0.03 0.03 0.06 ±0.06 +0 / -0.03 +0 / -0.03 ±0.12
4 ±0.06 ±0.06 ±0.06 ±0.25 ±0.25 ±0.03 0.03 0.06 ±0.06 +0 / -0.03 +0 / -0.06 ±0.12
5 - 8 +0.09 / -0.06 ±0.06 ±0.06 ±0.25 ±0.25 ±0.03 0.06 0.12 ±0.06 +0 / -0.03 +0 / -0.06 ±0.25
10 - 12 +0.16 / -0/12 ±0.12 ±0.09 ±0.38 ±0.25 ±0.06 0.09 0.19 ±0.09 +0 / -0.06 +0 / -0.06 ±0.25
14 - 16 +0.16 / -0/12 ±0.12 ±0.09 ±0.38 ±0.25 ±0.06 0.09 0.25 ±0.09 +0 / -0.06 +0 / -0.06 ±0.25
18 +0.16 / -0/12 ±0.12 ±0.09 ±0.38 ±0.25 ±0.06 0.12 0.38 ±0.09 +0 / -0.06 +0 / -0.06 ±0.25
20 - 24 +0.25 / -0.19 ±0.19 ±0.09 ±0.38 ±0.25 ±0.06 0.12 0.38 ±0.09 +0 / -0.06 +0 / -0.06 ±0.25

ALL DIMENSIONS ARE IN INCHES
IN ACCORDANCE WITH ASME/ANSI B16.9

Dimensional Tolerances for Fittings

GRADE1 CHEMICAL REQUIREMENTS
(COMPOSITION,%)2,3
MECHANICAL REQUIREMENTS2,4
C Mn P S Si Ni Cr Mo N Cu YIELD STRENGTH PSI MECHANICAL STRENGTH PSI ELONGATION %
304L .030 2.00 .045 .030 1.00 8.0 - 13.0 18.0 - 20.0 - - - 25,000 70,000 28
304 .08 2.00 .045 .030 1.00 8.0 - 11.0 18.0 - 20.0 - - - 30,000 75,000 28
304H .04-.10 2.00 .045 .030 1.00 8.0 - 11.0 18.0 - 20.0 - - - 30,000 75,000 28
316L .030 2.00 .045 .030 1.00 10.0 - 15.0 16.0 - 18.0 2.00 - 3.00 - - 25,000 70,000 28
316 .08 2.00 .045 .030 1.00 10.0 - 14.0 16.0 - 18.0 2.00 - 3.00 - - 30,000 75,000 28
316H .04-.10 2.00 .045 .030 1.00 10.0 - 14.0 16.0 - 18.0 2.00 - 3.00 - - 30,000 75,000 28

1 OTHER GRADES/ALLOYS ARE AVAILABLE ON APPLICATION
2 IN ACCORDANCE WITH ASTM A403 AND ASME SA-403, APPLICABLE TO CLASSES WP AND CR
3 MAXIMUM UNLESS A RANGE IS SPECIFIED
4 MINIMUM

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