ANSI B16.5 Class 600 High-Pressure Pipelines Stainless Steel Blind Flange

High-Quality Forged Stainless Steel Flanges & Pipe Fittings
WE PRODUCE FORGED FLANGES -- Your Reliable Industrial Pipeline Partner

Nominal Size		Outer Diameter	Central circle diameter	Bolt Hole Diameter	Number of Bolt Holes	Flange Ring Height	Sealing Face Diameter	Sealing Face Height
ND	NPS	A	J	I			G
15	1/2	95.2	66.5	15.7	4	14.2	35.1	6.4
20	3/4	117.3	82.6	19.1	4	15.7	42.9	6.4
25	1	123.9	88.9	19.1	4	17.5	50.8	6.4
32	1-1/4	133.3	98.6	19.1	4	20.6	63.5	6.4
40	1-1/2	155.4	114.3	22.4	4	22.3	73.15	6.4
50	2	165.1	127	19.1	8	25.4	91.9	6.4
65	2-1/2	190.5	149.4	22.4	8	28.4	104.6	6.4
80	3	209.5	168.1	22.4	8	31.7	127	6.4
90	3-1/2	228.5	184.2	25.4	8	35	139.7	6.4
100	4	273.1	215.9	25.4	8	38.1	157.2	6.4
125	5	330.2	266.7	28.4	8	44.5	185.7	6.4
150	6	355.6	292.1	28.4	12	47.8	215.9	6.4
200	8	419.1	349.3	31.8	12	55.6	269.7	6.4
250	10	508	431.8	35.1	16	63.5	323.9	6.4
300	12	558.8	489	35.1	20	66.55	381	6.4
350	14	603.3	527.1	38.1	20	69.85	412.8	6.4
400	16	685.8	603.3	41.1	20	76.2	469.9	6.4
450	18	743	654.1	44.5	20	82.6	533.4	6.4
500	20	812.8	723.9	44.5	24	88.9	584.2	6.4
600	24	939.8	838.2	50.8	24	101.6	692.2	6.4

Applications

Pressure Boundary Isolation:

   (1)Test isolation of piping systems (hydrotest/pneumatic test plugs).

   (2)Permanent seal for future pipe extensions.

High-Pressure Containment:

   (1)Reactor/tank nozzle seals in ASME VIII Div.1 vessels.

   (2)Manway covers for pressure vessels.

Characteristics

No Bore Design:

   (1)Thickness calculated per Appendix 2 of ASME VIII.

   (2)RF/FF face finish required (Ra ≤3.2μm, Para. 6.4.1).

Gasket Stress Control:

   (1)30% higher bolt load vs. WN flanges to compress full-face gaskets.

   (2)Spiral wound gaskets prohibited for Class >600.