Threaded Flanges

Threaded Flanges - As per API - 6A

(1-1) Pressure Rating - API 6B-2000 PSI - Working Pressure With R or RX type Ring Gasket
Size O.D. T Dia K P.C.D. N Dia d L dia X LN dia HL R / RX
2 1/16 6.50 1.31 4.25 5.00 8 0.75 1.75 3.31 3.19 2.38 23
2 9/16 7.50 1.44 5.00 5.88 8 0.88 1.94 3.94 3.44 2.88 26
3 1/8 8.25 1.56 5.75 6.62 8 0.88 2.12 4.62 3.56 3.50 31
4 1/16 10.75 1.81 6.88 8.50 8 1.00 2.44 6.00 4.31 4.50 37
5 1/8 13 2.06 8.25 10.50 8 1.12 2.69 7.44 4.81 5.56 41
7 1/16 14 2.19 9.50 11.50 12 1.12 2.94 8.75 4.94 6.63 45
9 16.5 2.50 11.88 1.75 12 1.25 3.31 10.75 5.56 8.63 49
11 20 2.81 14.00 17.00 16 1.38 3.69 13.50 6.31 10.75 53
13 5/8 22 2.94 16.25 19.25 20 1.38 3.94 15.75     57
16 3/4 27 3.31 20.00 23.75 20 1.62 4.50 19.50     65
21 1/4 32 3.88 25.00 28.50 24 1.75 5.38 24.00     73
(1-2) Pressure Rating - API 6B-3000 PSI - Working Pressure With R or RX type Ring Gasket
Size O.D. T Dia K P.C.D. N Dia d L dia X LN dia HL R / RX
2 1/16 8.50 1.81 4.88 6.50 8 1.00 2.56 4.12 4.31 2.38 24
2 9/16 9.62 1.94 5.38 7.50 8 1.12 2.81 4.88 4.44 2.88 27
3 1/8 9.50 1.81 6.12 7.50 8 1.00 2.44 5.00 4.31 3.50 31
4 1/16 11.50 2.06 7.12 9.25 8 1.25 3.06 6.25 4.81 4.50 37
5 1/8 13.75 2.31 8.50 11.0 8 1.38 3.44 7.50 5.31 5.56 41
7 1/16 15.00 2.50 9.50 12.50 12 1.25 3.69 9.25 5.81 6.63 45
9 18.50 2.81 12.12 15.50 12 1.50 4.31 11.75 6.69 8.63 49
11 21.50 3.06 14.25 18.50 16 1.50 4.56 14.50 7.56 10.75 53
13 5/8 24.00 3.44 16.50 21.00 20 1.50 4.94 16.50     57
16 3/4 27.75 3.94 20.62 24.25 20 1.75 5.06 20.00     66
21 1/4 33.75 4.75 25.50 29.25 20 2.12 6.75 14.50     74
(1-3) Pressure Rating - API 6B-3000 PSI - Working Pressure With R or RX type Ring Gasket
Size O.D. T Dia K P.C.D. N Dia d L dia X LN dia HL R / RX
2 1/16 8.50 1.81 4.88 6.50 8 1.00 2.56 4.12 4.31 2.38 24
2 9/16 9.62 1.94 5.38 7.50 8 1.12 2.81 4.88 4.44 2.88 27
3 1/8 10.50 2.19 6.62 8.00 8 1.25 3.19 5.25 4.94 3.50 35
4 1/16 12.25 2.44 7.62 9.50 8 1.38 3.88 6.38 5.19 4.50 39
5 1/8 14.75 3.19 9.00 11.50 8 1.62 4.44 7.75 6.44 5.56 44
7 1/16 15.50 6.62 9.75 12.50 12 1.50 5.06 9.00 7.13 6.63 46
9 19 4.06 12.50 15.50 12 1.75 6.06 11.50 8.81 8.63 50
11 23 4.69 14.63 19.00 12 2.00 6.69 14.50 10.44 10.75 54

All Dimensions are in Inches.