Forged Flanges

Blind Flanges-ANSI B16.5

Class 150 lb

Pipe		Flange Data		Raised  Face	Drilling Data			Weight
Nominal  Pipe Size		A	C	G	H	I	J
	Outside  Diameter	Overall  Diameter	Flange  Thickness  min	Face  Diameter	Number  of Holes	Bolt Hole  Diameter	Diameter  of  Circles  of  Holes	kg/ pieces
	mm	mm	mm	mm		mm	mm
1/2	21.30	88.90	11.20	35.10	4	15.70	60.45	0.42
3/4	26.70	98.60	12.70	42.90	4	15.70	69.85	0.61
1	33.40	108.0	14.20	50.80	4	15.70	79.25	0.86
1 1/4	42.20	117.3	15.70	63.50	4	15.70	88.90	1.17
1 1/2	48.30	127.0	17.50	73.15	4	15.70	98.60	1.53
2	60.30	152.4	19.10	91.90	4	19.10	120.7	2.42
2 1/2	73.00	177.8	22.40	104.6	4	19.10	139.7	3.94
3	88.90	190.5	23.90	127.0	4	19.10	152.4	4.93
3 1/2	101.6	215.9	23.90	139.7	8	19.10	177.8	6.17
4	114.3	228.6	23.90	157.2	8	19.10	190.5	7.00
5	141.3	254.0	23.90	185.7	8	22.40	215.9	8.63
6	168.3	279.4	25.40	215.9	8	22.40	241.3	11.3
8	219.1	342.9	28.40	269.7	8	22.40	298.5	19.6
10	273.0	406.4	30.20	323.9	12	25.40	362.0	28.8
12	323.8	482.6	31.75	381.0	12	25.40	431.8	43.2
14	355.6	533.4	35.10	412.8	12	28.40	476.3	58.1
16	406.4	596.9	36.60	469.9	16	28.40	539.8	76.0
18	457.2	635.0	39.60	533.4	16	31.75	577.9	93.7
20	508.0	698.5	42.90	584.2	20	31.75	635.0	122
24	609.6	812.8	47.80	692.2	20	35.10	749.3	185

Class 300 lb

Pipe		Flange Data		Raised Face	Drilling Data			Weight
Nominal  Pipe Size		A	C	G	H	I	J
	Outside  Diameter	Overall  Diameter	Flange  Thickness  min	Face  Diameter	Number  of  Holes	Bolt Hole  Diameter	Diameter  of  Circles  of  Holes	kg/ pieces
	mm	mm	mm	mm		mm	mm
1/2	21.30	95.20	14.20	35.10	4	15.70	66.55	0.64
3/4	26.70	117.3	15.70	42.90	4	19.00	82.50	1.11
1	33.40	123.9	17.50	50.80	4	19.00	88.90	1.39
1 1/4	42.20	133.3	19.00	63.50	4	19.00	98.50	1.79
1 1/2	48.30	155.4	20.60	73.15	4	22.3	114.3	2.66
2	60.30	165.1	22.30	91.90	8	19.10	127.0	3.18
2 1/2	73.00	190.5	25.40	10.46	8	22.3	149.3	4.85
3	88.90	209.5	28.40	12.70	8	22.30	168.1	6.81
3 1/2	101.6	228.6	30.20	139.7	8	22.30	184.1	8.71
4	114.3	254.0	31.70	157.2	8	22.30	200.1	11.5
5	141.3	279.4	35.00	185.7	8	22.30	234.9	15.6
6	168.3	317.5	36.50	215.9	12	22.30	269.7	20.9
8	219.1	381.0	41.10	269.7	12	25.40	330.2	34.3
10	273.0	444.5	47.70	323.9	16	28.40	387.3	53.3
12	323.8	520.7	50.80	381.0	16	31.70	450.8	78.8
14	355.6	584.2	53.80	412.8	20	31.70	514.3	105
16	406.4	647.7	57.15	469.9	20	35.00	571.5	137
18	457.2	711.2	60.45	533.4	24	35.00	628.6	175
20	508.0	774.7	63.50	584.2	24	35.00	685.8	221
24	609.6	914.4	69.85	692.2	24	41.10	812.8	339

Class 600 lb

Pipe		Flange Data		Raised Face	Drilling Data			Weight
Nominal  Pipe Size		A	C	G	H	I	J
	Outside  Diameter	Overall  Diameter	Flange  Thickness min	Face  Diameter	Number  of Holes	Bolt Hole  Diameter	Diameter  of  Circles  of  Holes	kg/ pieces
	mm	mm	mm	mm		mm	mm
1/2	21.30	95.20	14.20	35.10	4	15.70	66.55	0.76
3/4	26.70	117.3	15.70	42.90	4	19.10	82.60	1.28
1	33.40	123.9	17.50	50.80	4	19.10	88.90	1.60
1 1/4	42.20	133.3	20.60	63.50	4	19.10	98.60	2.23
1 1/2	48.30	155.4	22.30	73.15	4	22.40	114.3	3.25
2	60.30	165.1	25.40	91.90	8	19.10	127.0	4.15
2 1/2	73.00	190.5	28.40	104.6	8	22.40	149.4	6.13
3	88.90	209.5	31.70	127.0	8	22.40	168.1	8.44
31/2	101.6	228.6	35.00	139.7	8	25.40	184.2	11.0
4	114.3	273.1	38.10	157.2	8	25.40	215.9	17.3
5	141.3	330.2	44.50	185.7	8	28.40	266.7	29.4
6	168.3	355.6	47.80	215.9	12	28.40	292.1	36.1
8	219.1	419.1	55.60	269.7	12	31.75	349.3	58.9
10	273.0	508.0	63.50	323.9	16	35.10	431.8	97.5
12	323.8	558.8	66.55	381.0	20	35.10	489.0	124
14	355.6	603.3	69.85	412.8	20	38.10	527.1	151
16	406.4	685.8	76.20	469.9	20	41.10	603.3	214
18	457.2	743.0	82.60	533.4	20	44.50	654.1	272
20	508.0	812.8	88.90	584.2	24	44.50	723.9	349
24	609.6	939.8	101.6	692.2	24	50.80	838.2	533

Class 900 lb

Pipe		Flange Data		Raised Face	Drilling Data			Weight
Nominal  Pipe Size		A	C	G	H	I	J
	Outside  Diameter	Overall  Diameter	Flange  Thickness min	Face  Diameter	Number  of Holes	Bolt Hole  Diameter	Diameter  of  Circles  of  Holes	kg/ pieces
	mm	mm	mm	mm		mm	mm
1/2	21.30	120.6	22.30	35.10	4	22.30	8,250.00	1.77
3/4	26.70	130.0	25.40	42.90	4	22.30	8,890.00	2.42
1	33.40	149.3	28.40	50.80	4	25.40	101.6	3.57
1 1/4	42.20	158.7	28.40	63.50	4	25.40	111.2	4.15
1 1/2	48.30	177.8	31.70	73.15	4	28.40	123.9	5.75
2	60.30	215.9	38.10	91.90	8	25.40	165.1	10.1
2 1/2	73.00	244.3	41.10	104.6	8	28.40	190.5	14.0
3	88.90	241.3	38.10	127.0	8	25.40	190.5	13.1
4	114.3	292.1	44.50	157.2	8	31.70	234.9	26.9
5	141.3	349.2	50.80	185.7	8	35.00	279.4	36.5
6	168.3	381.0	55.60	215.9	12	31.70	317.0	47.4
8	219.1	469.9	63.50	269.7	12	38.10	393.7	82.5
10	273.0	546.1	69.85	323.9	16	38.10	469.9	122
12	323.8	609.6	79.25	381.0	20	38.10	533.4	173
14	355.6	641.3	85.80	412.8	20	41.10	558.8	206
16	406.4	704.8	88.90	469.9	20	44.40	615.9	259
18	457.2	787.4	101.6	533.4	20	50.80	685.8	367
20	508.0	857.2	107.9	584.2	20	53.80	749.3	463
24	609.6	1,041.4	139.7	692.2	20	66.55	901.7	876

Notes:

Class 150 lb - Class 300 lb:

Weights are based on manufacturer's data and are approximate.

Flat face flanges may be provided at full thickness, C,or with raised fae removed (the latter is non-standard).

Class 600 lb - Class 2500 lb:

Weights are based on manufacturer's data are approximate.

Wide range of raw-materials for flanges

Alloy Steel:  ASTM A182 F11 1 1/4% Cr 1/2% Mo F5 F9 F91 ASTM A182 F22 2 1/4% Cr 1% Mo F92 F911 ASTM A350 LF2 LF3 LF6 etc...

Carbon Steel:  ASTM A 105 A105N etc...

Stainless Steel:  ASTM A182 F316 F316L F317 F321 ASTM A l 82 F304 F310 F904L F317L F347H etc...

Duplex Steel:  ASTM A182 F51 F53 F54 F55 F57 etc...

• Ratings from 300 lb to 2500 lb

• Sizes from 1" Nominal Bore

• Orifice flanges are intended for use instead of standard pipe flanges

• When an orifice plate or flow nozzle must be installed.

• Sure tappings are machined into the orifice flange, making separate

• Orifice carriers or tappings in the pipe wall is unnecessary.