Caps and Stub Ends

DIMENSIONAL TOLERANCES for FLANGES1
  Nominal
Pipe Size
Tolerance
Outside Diameter2 1/2" - 24" ±0.06
Hub Diameter3 1/2" - 5" +0.09 / -0.03
6" - 24" +0.16 / -0.03
Overall Length3 1/2" - 4" ± 0.06
5" - 10" +.06/-.12
12" - 24" +.12/-.18
20" - 24" +0.19 / -0
Raised Face Diameter 1/2" - 24" ±0.03
Bolt Circle Diameter 1/2" - 24" ±0.06
Center to Center of Adjacent Bolt Holes 1/2" - 24" ±0.03
Eccentricity between Bolt Circle Diameter and
Machined Facing Diameter
1/2" - 2 1/2" ±0.03
3" - 24" ±0.06
Wall Thickness: Weldneck 1/2" - 24" Not Less Than 87 1/2% of the Nominal Thickness Specified
Inside Diameter: Weldneck and Bore of Socket Weld 1/2" - 10" ±0.03
12" - 18" ±0.06
20" - 24" +0.12 / -0.06
Inside Diameter: Slip on, Lap Joint, Counter Bore of Socket Weld,
Counter Bore of Class 300 Threaded
1/2" - 10" +0.03 / -0
12" - 24" +0.06 / -0

ALL DIMENSIONS ARE IN INCHES
1 - IN ACCORDANCE WITH ASME/ANSI B16.5
2 - NO TOLERANCE IS SPECIFIED IN B16.5
3 - NO TOLERANCE FOR SLIP ON, SOCKET WELD, THREADED
AND LAP JOINT IS SPECIFIED IN B16.5

GRADE 1 CHEMICAL REQUIREMENTS 2,3
C Mn P S Si Ni Cr Mo N Cu
F304L .030 2.00 .045 .030 1.00 8.0 - 13.0 18.0 - 20.0 - .10 -
F304 .08 2.00 .045 .030  1.00 8.0 - 11.0 18.0 - 20.0 - .10 -
F304H .04 - .10  2.00 .045 .030  1.00 8.0 - 11.0 18.0 - 20.0 - - -
F316L .030  2.00  .045  .030  1.00 10.0 - 15.0 16.0 - 18.0 2.00 - 3.00 .10 -
F316 .08  2.00  .045  .030  1.00 10.0 - 14.0 16.0 - 18.0 2.00 - 3.00 .10 -
F316H .04 - .10  2.00  .045  .030  1.00 10.0 - 14.0 16.0 - 18.0 2.00 - 3.00 - -
  MECHANICAL REQUIREMENTS 24
GRADE 1 YIELD
STRENGTH
PSI
MECHANICAL
STRENGTH
PSI
ELONGATION
%
REDUCTION
OF AREA %
 
F304L 25,000 70,000 30 50
F304 30,000 75,000 30 50
F304H 30,000 75,000 30 50
F316L 25,000 70,000 30 50
F316 30,000 75,000 30 50
F316H 30,000 75,000 30 50

1 - OTHER GRADES/ALLOYS ARE AVAILABLE ON APPLICATION
2 - IN ACCORDANCE WITH ASTM A182 AND ASME SA 182
3 - MAXIMUM UNLESS A RANGE IS SPECIFIED
4 - MINIMUM

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