Blind Flanges

Our range of Blind Flanges are widely used in various industries owing to its quality features like corrosion and rust resistance, ability to work under high pressure & temperature, easy installation etc. The Blind Flanges require less maintenance and offer a lasting performance.

    15 NB UP TO 600 NB IN 150 LBS, 300 LBS, 400 LBS, 600 LBS, 900 LBS, 1500 LBS,    2500 LBS / TABLE 2.5, TABLE 6, TABLE 10, TABLE 16,TABLE 25, TABLE 40, TABLE    64, TABLE 160, TABLE 320, TABLE 400
FORM : SLIP ON, SOCKET WELD, BLIND, LAPPED, SCREWED, WELD NECK,    REDUCING, SPECTACLE, SLIP ON BOSS, PLATE, PLATE BLANK, SCREWED BOSS.
Nickel & Copper Alloy Nickel Alloy ASTM / ASME SB 564 UNS 2200 ( NICKEL 200 ), UNS 4400 (MONEL 400 ),    UNS 8825 INCONEL (825), UNS 6600 (INCONEL 600 ), UNS 6601 ( INCONEL 601 ),    UNS 6625 (INCONEL 625), UNS 10276 (HASTELLOY C 276) ASTM / ASME SB 160 UNS 2201 (NICKEL 201) ASTM / ASME SB 472 UNS 8020 (ALLOY 20 / 20 CB 3)
Copper Alloy ASTM / ASME SB 61 UNS NO. C 92200 & ASTM / ASME SB 62 UNS NO. C    83600. ASTM / ASME SB 151 UNS NO. 70600, 71500, C 70600 ( CU -NI-    90/10), C 71500 ( CU -NI- 70/30) ASTM / ASME SB 152 UNS NO C 10100, C 10200, C 10300, C 10800 , C    12000, C 12200.
Stainless & Duplex Steel Stainless Steel ASTM / ASME SA 182 F 304, 304L, 304H, 309H, 310H, 316, 316H , 316L,    316 LN, 317, 317L, 321, 321H, 347, 347 H
Duplex Steel ASTM / ASME SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61.
Carbon & Alloy Steel Carbon Steel ASTM / ASME A 105. ASTM / ASME A 350 LF 2.
Alloy Steel ASTM / ASME A 182 GR F 5, F 9, F 11, F 12, F 22, F 91.

ASME/ANSI B16.5 150lb Blind Flange /Standards, Dimensions & Weight

Pipe Normal Diam.		O.D. Flange	Thk. Of Flange Min	Diameter of Raised Face	Diam. of Bolt Circle	Diam. of Bolt Holes	Number of Bolts	Diam. of Bolts (inch)	KG	LB
inch	dn	O	C	G	BC	BH	BN	BD
1/2″	15	89.00	11.20	35.10	60.50	15.80	4	1/2″	0.5	1.1
3/4″	20	98.50	12.70	42.90	69.90	15.80	4	1/2″	0.8	1.8
1″	25	108.00	14.20	50.80	79.30	15.80	4	1/2″	0.9	2
1-1/4″	32	117.50	15.70	63.50	88.90	15.80	4	1/2″	1.3	2.9
1-1/2″	40	127.00	17.50	73.20	98.60	15.80	4	1/2″	1.6	3.5
2″	50	152.50	19.10	91.90	120.70	19.10	4	5/8″	2.6	5.7
2-1/2″	65	178.00	22.40	104.60	139.70	19.10	4	5/8″	4.1	9
3″	80	190.50	23.90	127.00	152.40	19.10	4	5/8″	5..1	11.2
3-1/2″	90	216.00	23.90	139.70	177.80	19.10	8	5/8″	6.5	14.3
4″	100	228.50	23.90	157.20	190.50	19.10	8	5/8″	7.5	16.5
5″	125	254.00	23.90	185.70	215.90	22.40	8	3/4″	9.2	20.3
6″	150	279.50	25.40	215.90	241.30	22.40	8	3/4″	11.8	26
8″	200	343.00	28.40	269.70	298.50	22.40	8	3/4″	20.4	45
10″	250	406.50	30.20	323.90	362.00	25.40	12	7/8″	31	68
12″	300	482.50	31.80	381.00	431.80	25.40	12	7/8″	47	103
14″	350	533.50	35.10	412.80	476.30	28.50	12	1″	60	132
16″	400	597.00	36.60	469.90	539.80	28.50	16	1″	81	178
18″	450	635.00	39.60	533.40	577.90	31.80	16	1 1/8″	93	205
20″	500	698.50	42.90	584.20	635.00	31.80	20	1 1/8″	127	280
24″	600	813.00	47.80	692.20	749.30	35.10	20	1 1/4″	190	419

Note: 1) Blind Flanges may be made with the same hub as that used for Slip-on Flanges or without hub.

ASME/ANSI B16.5 300lb Blind Flange /Standards, Dimensions & Weight

Pipe Normal Diam.		O.D. Flange	Thk. Of Flange Min	Diameter of Raised Face	Diam. of Bolt Circle	Diam. of Bolt Holes	Number of Bolts	Diam. of Bolts (inch)	Approx. Weight
inch	dn	O	C	G	BC	BH	BN	BD	KG/PCS	LB/PCS
1/2″	15	95.5	14.2	35.1	66.5	15.7	4	1/2″	0.8	1.8
3/4″	20	117. 5	15.7	42.9	82.6	19.1	4	5/8″	1.2	2.6
1″	25	124. 0	17.5	50.8	88.9	19.1	4	5/8″	1.5	3.3
1-1/4″	32	133. 5	19.1	63.5	98.6	19.1	4	5/8″	2	4.4
1-1/2″	40	155. 5	20.6	73.2	114.3	22.4	4	5/8″	2.9	6.4
2″	50	165. 0	22.4	91.9	127	19.1	8	5/8″	3.5	7.7
2-1/2″	65	190. 5	25.4	104.6	149.4	22.4	8	3/4″	5.3	11.7
3″	80	209. 5	28.4	127	168.1	22.4	8	3/4″	7.2	15.9
3-1/2″	90	228. 5	30.2	139.7	184.2	22.4	8	3/4″	9.2	20.3
4″	100	254. 0	31.8	157.2	200.2	22.4	8	3/4″	12.2	26.8
5″	125	279. 5	35.1	185.7	235	22.4	8	3/4″	16	35.2
6″	150	317. 5	36.6	215.9	269.7	22.4	12	3/4″	22	48.4
8″	200	381. 0	41.1	269.7	330.2	25.4	12	7/8″	36	79.5
10″	250	444. 5	47.8	323.9	387.4	28.4	16	1″	55	121
12″	300	520. 5	50.8	381	450.9	31.8	16	1 1/8″	82.5	182
14″	350	584. 0	53.8	412.8	514..4	31.8	20	1 1/8″	108	238
16″	400	647. 5	57.2	469.9	571.5	35.1	20	1 1/4″	139	306
18″	450	711. 0	60.5	533.4	628.7	35.1	24	1 1/4″	178	392
20″	500	774. 5	63.5	584.2	685.8	35.1	24	1 1/4″	228	503
24″	600	914. 5	69.9	692.2	812.8	41.1	24	1 1/2″	350	772

Note: 1) Blind Flanges may be made with the same hub as that used for Slip-on Flanges or without hub.

ASME/ANSI B16.5 600lb Blind Flange /Standards, Dimensions & Weight

Pipe Normal Diam.		O.D. Flange	Thk. Of Flange Min	Diameter of Raised Face	Diam. of Bolt Circle	Diam. of Bolt Holes	Number of Bolts	Diam. of Bolts (inch)	Approx. Weight
inch	dn	O	C	G	BC	BH	BN	BD	KG/PCS	LB/PCS
1/2″	15	95.5	14.2	35.1	66.5	15.7	4	1/2″	0.8	1.8
3/4″	20	117. 5	15.7	42.9	82.6	19.1	4	5/8″	1.4	3.1
1″	25	124. 0	17.5	50.8	88.9	19.1	4	5/8″	1.7	3.7
1-1/4″	32	133. 5	20.6	63.5	98.6	19.1	4	5/8″	2.4	5.3
1-1/2″	40	155. 5	22.4	73.2	114.3	22.4	4	3/4″	3.4	7.5
2″	50	165. 0	25.4	91.9	127	19.1	8	5/8″	4.4	9.7
2-1/2″	65	190. 5	28.4	104.6	149.4	22.4	8	3/4″	6.8	15
3″	80	209. 5	31.8	127	168.1	22.4	8	3/4″	8.9	19.7
3-1/2″	90	228. 5	35.1	139.7	184.2	25.4	8	7/8″	12.7	28
4″	100	273. 0	38.1	157.2	215.9	25.4	8	7/8″	18.6	41
5″	125	330. 0	44.5	185.7	266.7	28.4	8	1″	30.8	68
6″	150	355. 5	47.8	215.9	292.1	28.4	12	1″	38	83.6
8″	200	419. 0	55.6	269.7	349.3	31.8	12	1 1/8″	62.2	137
10″	250	508. 0	63.5	323.9	431.8	35.1	16	1 1/4″	102	225
12″	300	559. 0	66.5	381	489	35.1	20	1 1/4″	132	291
14″	350	603. 5	69.9	412.8	527.1	38.1	20	1 3/8″	158	348
16″	400	686. 0	76.2	469.9	603.3	41.1	20	1 1/2″	225	496
18″	450	743. 0	82.6	533.4	654.1	44.5	20	1 5/8″	285	628
20″	500	813. 0	88.9	584.2	723.9	44.5	24	1 5/8″	365	805
24″	600	940. 0	101.6	692.2	838.2	50.8	24	1 7/8″	532	1170

Note: 1) Blind Flanges may be made with the same hub as that used for Slip-on Flanges or without hub.

ASME/ANSI B16.5 900lb Blind Flange /Standards, Dimensions & Weight

Pipe Normal Diam.		O.D. Flange	Thk. Of Flange Min	Diam. of Bolt Circle	Diam. of Bolt Holes	Number of Bolts	Diam. of Bolts (inch)	Approx. Weight
inch	dn	O	C	BC	BH	BN	BD	KG/PCS	LB/PCS
1/2″	15	120.7	22.4	82.6	22.4	4	3/4″	1.9	4.2
3/4″	20	130	25.4	88.9	22.4	4	3/4″	2.7	6
1″	25	149.4	28.4	101.6	25.4	4	7/8″	3.7	8.1
1-1/4″	32	158.8	28.4	111.3	25.4	4	7/8″	4.3	9.5
1-1/2″	40	177.8	31.8	124	28.4	4	1″	5.9	13
2″	50	215.9	38.1	165.1	25.4	8	7/8″	11.3	24.9
2-1/2″	65	244.3	41.1	190.5	28.4	8	1″	16	35.2
3″	80	241.3	38.1	190.5	25.4	8	7/8″	16.8	37
4″	100	292.1	44.5	235	31.8	8	1 1/8″	24.5	54
5″	125	349.3	50.8	279.4	35.1	8	1 1/4″	39.5	87
6″	150	381	55.6	317.5	31.8	12	1 1/8″	51.5	113.5
8″	200	469.9	63.5	393.7	38.1	12	1 3/8″	89	196
10″	250	546.1	69.9	469.9	38.1	16	1 3/8″	131	289
12″	300	609.6	79.2	533.4	38.1	20	1 3/8″	187	412
14″	350	641.4	85.9	558.8	41.1	20	1 1/2″	224	494
16″	400	704.9	88.9	616	44.5	20	1 5/8″	259	593
18″	450	787.4	101.6	685.8	50.8	20	1 7/8″	383	844
20″	500	857.3	108	749.3	53.8	20	2″	482	1063
24″	600	1041	139.7	901.7	66.5	20	2 1/2″	905	1995

Note: 1) Blind Flanges may be made with the same hub as that used for Slip-on Flanges or without hub.

ASME/ANSI B16.5 1500lb Slip on Flange/Standards, Dimensions & Weight

Pipe Normal Diam.		O.D. Flange	Thk. Of Flange Min	Diam. of Hub	Length Hub	Bore	Diam. of Bolt Circle	Diam. of Bolt Holes	Number of Bolts	Diam. of Bolts (inch)	Approx. Weight
inch	dn	O	C	X	Y	B	BC	BH	BN	BD	KG/PCS	LB/PCS
1/2″	15	120.7	22.4	38.1	31.8	22.4	82.6	22.4	4	3/4″	1.8	4
3/4″	20	130	25.4	44.5	35.1	27.7	88.9	22.4	4	3/4″	2.4	5.3
1″	25	149.4	28.4	52.3	41.1	34.5	101.6	25.4	4	7/8″	3.6	7.9
1-1/4″	32	158.8	28.4	63.5	41.1	43.2	111.3	25.4	4	7/8″	4.1	9
1-1/2″	40	177.8	31.8	69.9	44.5	49.5	124	28.4	4	1″	5.4	12
2″	50	215.9	38.1	104.6	57.2	62	165.1	25.4	8	7/8″	10.5	23.1
2-1/2″	65	244.3	41.1	124	63.5	74.7	190.5	28.4	8	1″	15.8	34.8
3″	80	266.7	47.8	133.4			190.5	25.4	8	7/8″	21.5	43
4″	100	311.2	53.8	162.1			235	31.8	8	1 1/8″	31	68.3
5″	125	374.7	73.2	196.9			279.4	35.1	8	1 1/4″	58.8	130
6″	150	393.7	82.6	228.6			317.5	31.8	12	1 1/8″	74	163
8″	200	482.6	91.9	292.1			393.7	38.1	12	1 3/8″	112	247
10″	250	584.2	108	368.3			469.9	38.1	16	1 3/8″	184	406
12″	300	673.1	124	450.9			533.4	38.1	20	1 3/8″	264	581
14″	350	749.3	133.4	495.3			558.8	41.1	20	1 1/2″
16″	400	825.5	146.1	552.5			616	44.5	20	1 5/8″
18″	450	914.4	162.1	596.9			685.8	50.8	20	1 7/8″
20″	500	984.3	177.8	641.4			749.3	53.8	20	2″
24″	600	1168.4	203.2	762			901.7	66.5	20	2 1/2″

Note: 1) Blind Flanges may be made with the same hub as that used for Slip-on Flanges or without hub.

ASME/ANSI B16.5 2500lb Slip on Flange/Standards, Dimensions & Weight

Pipe Normal Diam.	Outside Diameter of Flange	Diameter Bore	thickness of Flange	Diameter of Raised Face	Height of Raised Face	Diameter of Hub at Base	Length through Hub	No. of Holes	Diameter of Holes	Diameter of Bolts	Diameter of Bolt Circle	Weight
inch	O		C	G		X	Y	BN	BH	BD	BC	lbs.
1/2	5.25	0.88	1.19	1.38	0.25	1.69	1.56	4	0.88	3/4	3.5	7
3/4	5.5	1.09	1.25	1.69	0.25	2	1.69	4	0.88	3/4	3.75	9
1	6.25	1.36	1.38	2	0.25	2.25	1.88	4	1	7/8	4.25	12
1 1/4	7.25	1.70	1.5	2.5	0.25	2.88	2.06	4	1.12	1	5.12	18
1 1/2	8	1.95	1.75	2.88	0.25	3.12	2.38	4	1.25	1 1/8	5.75	25
2	9.25	2.44	2	3.62	0.25	3.75	2.75	8	1.12	1	6.75	38
2 1/2	10.5	2.94	2.25	4.12	0.25	4.5	3.13	8	1.25	1 1/8	7.75	55
3	12	3.57	2.62	5	0.25	5.25	3.63	8	1.38	1 1/4	9	83
4	14	4.57	3	6.19	0.25	6.5	4.25	8	1.62	1 1/2	10.75	127
5	16.5	5.66	3.62	7.31	0.25	8	5.13	8	1.88	1 3/4	12.75	210
6	19	6.72	4.25	8.5	0.25	9.25	6	8	2.12	2	14.5	323
8	21.75	8.72	5	10.62	0.25	12	7	12	2.12	2	17.25	485
10	26.5	10.88	6.5	12.75	0.25	14.75	9	12	2.62	2 1/2	21.25	925
12	30	12.88	7.25	15	0.25	17.38	10	12	2.88	2 3/4	24.38	1300

Note:
1) Blind Flanges may be made with the same hub as that used for Slip-on Flanges or without hub.