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Oilfield Flange Slide Rule API6A
1 13/16"
2 1/16"
2 9/16"
3 1/16"
3 1/8"
4 1/16"
5 1/8"
7 1/16"
9"
11"
13 5/8"
16 3/4"
18 3/4"
20 3/4"
21 1/4"
26 3/4"
30"
FLANGE SIZE (NOMINAL)
MAXIMUM SERVICE PRESSURE RATING
STANDARD RING NUMBER
PRESSURE ENERGIZED RING NUMBER
