Flange – Weld Neck
2-9/16'' API 10.000 PSI
I.D : 2-9/16''
Ring Groove : BX153
Material : Unknown
3-1/8’’ API 5000 PSI
I.D : 3-1/8’’
Ring Groove : R35, Stainless Steel
Material : 4130 (marked on item; no certs available)
4-1/16’’ API 15.000 PSI
I.D : 4-1/16’’
Ring Groove : BX155
Material : unknown
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