Ring Grooves ASME/ANSI B16

American Flange Standards

Ring Joint Dimensions Series.A CLASS 300,600,900
NOMINAL PIPE SIZE
CLASS 300 600 900
GROOVE
NUMBER
PITCH
DIAMETER
DEPTHWIDTHRADIUS
AT
BASE
DIAMETER
RF
SECTION
650 (26")650 (26")R93749.313201.5810
700 (28")700 (28")R94800.113201.5861
750 (30")750 (30")R95857.2513201.5917
800 (32")800 (32")R96914.414231.5984
850 (34")850 (34")R97965.214231.51035
900 (36")900 (36")R981022.3514231.51092
650 (26")R100749.317302.3832
700 (28")R101800.117332.3889
750 (30")R102857.2517332.3946
800 (32")R103914.417332.31003
850 (34")R104965.221372.31067
900 (36")R1051022.3521372.31124

NOTES:

(1) Ring-joint gaskets are not contemplated for sizes 950 (38") and larger flanges.

(2) Height of raised portion is equal to the depth of groove B, but is not subject to the tolerance for B full face contour.

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