Blind Flange Manufacturer In India

Top notch Supplier of Stainless Steel Blind Flange in Mumbai, Check latest price list of PN16 Reducing Blind Flange

What is Stainless Steel Blind Flange?
A stainless steel blind flange is a solid piece of steel that is designed without any bore at the center. These flanges act as blanks to cap off the line in a hydraulic system. The termination of the flow helps in rerouting, terminating, and performing any maintenance in the pipeline. The flanges have basic construction requiring minimal machining. A blind flange helps cap high-pressure fluids and gases in different industries. These flanges are usually bolted in place, enabling them to be very durable for long periods.

Threaded Blind Flange Vs Tapped Blind Flange

• A threaded blind flange has threads on the outside of the grade that allows it to thread with interior threads in the pipeline. 
• A tapped bling flange has threads on the inside of the flange allowing it to tap with threads on the exterior of the line.

What is the function of a blank flange?
A blank flange is used to block the section of a pipe or nozzle that is not used. These flanges help in terminating the movement of flow in the system. This allows certain sections to be repaired or modified to enhance the performance of the pipeline.

Ductile iron blind flange vs Carbon Steel Blind Flange

• The Ductile iron blind flange is designed with a carbon content upwards of 2%. Carbon steel blind flange is designed with carbon content lower than 2% but is alloyed with other alloys.
• Carbon steel blind flanges have higher ductility and strength compared to ductile iron blind flanges.
• Ductile iron blind flanges have a lower cost compared to carbon grade blind flanges.

Raised Face Blind Flange vs High Hub Blind Flange

• A raised face blind flange has a raised face that is above their bolting circle, wherein the gasket is placed to securely seal the grade.
• A high hub blind flange has no center hold and is aligned with proper bolt holes.

Supplier of Carbon Steel Blind Flange and Titanium Reducing BLRF Flange with Metallographic examination and MTR

Size	1/2"NB TO 24"NB IN
Coating/Surface Treatment:	Zinc Plated, Oil Black Paint, Anti-rust Paint, Yellow Transparent, Cold and Hot Dip Galvanized
Materials	Monel : Monel 400/ K500/ R-405 Hastalloy : Hastalloy B2/ B3/ C22/ C276/ X Nickel : Nickel 200/ 201 Incoloy : Incoloy 800/ 800H/ 800HT Inconel : Inconel 600/ 601/ 625/ 718 Stainless Steel : ASTM A182 F304L/304/304H, F316/316L, F321, F202, F316TI, F316H, F310, F904L Titanium : Gr1/ Gr2/ Gr3/ Gr5/ Gr7/ Gr11 Carbon Steel : ASTM A105N/A105, LF1, A350 LF2 CL2/CL1, LF3 CL2CL1/, A694 F46, F42, F48, F42, F50, F56, F52, F60, F70, F65, A516.65, 60, 70, C22.8 Alloy Steel : ASTM A182 F5, F1, F9, F22, F11, F91 Duplex Steel : ASTM / ASME A/SA 182 UNS F45, F61, F44, F53, F51, F60, F55
Class	150 LBS upto 2500 LBS DIN Standard ND-10, 6, 25, 16, 40
Value Added Service	Customized Flanges, CNC Machine

Description	Price Per Kg In Singapore	Price Per Kg In UAE	Price Per Kg In USD	Price Per Kg In Malaysia
RF16 X 300# IRON OR STEEL SS304 BLIND FLANGE	SGD 722.39	UAE Dirham 1,886.25	US $521.73	MYR 2,287.58
RF16 X 150# IRON OR STEEL SS304 BLIND FLANGE	SGD 421.40	UAE Dirham 1,100.32	US $304.34	MYR 1,334.43
1 X 300 STAINLESS STEEL FLANGES GR.304 H SPECTACLE BLIND RF	SGD 42.23	UAE Dirham 110.26	US $30.50	MYR 133.72
DN 600 PN6 30MM THK STAINLESS STEEL FLANGES Gr.304 L BLIND FLANGE	SGD 554.74	UAE Dirham 1,448.49	US $400.65	MYR 1,756.68
2 RF CARBON STEEL FORGED FLANGES - C.S. FLANGE BLIND CS	SGD 5.58	UAE Dirham 14.57	US $4.03	MYR 17.67
CL.150, 1 BLIND FLANGE, RF, ASME B16.5, ASTM A182 GR. F60, FERRITIC/AUSTENITIC	SGD 24.16	UAE Dirham 63.07	US $17.45	MYR 76.49

CLass	150	300	600	900	1500	2500
B	9.6	12.7	14.3	22.3	22.3	30.2
	11.2	14.3	20.7	28.7	28.7	36.6
DIA D	90	95	95	120	120	135
DIA G	35.1	35.1	35.1	35.1	35.1	35.1
NO. L	4	4	4	4	4	4
DIA K	60.3	66.7	66.7	82.6	82.6	88.9
DIA L	15.9	15.9	15.9	22.2	22.2	22.2
Stud Bolts Diameter x Length
Lenght (mm)	55	65	75	110	110	120
DIA (in)	1/2	1/2	1/2	3/4	3/4	3/4

Size in mm	Size in Inch	Flange Thick.	RF Height	Outer Dia.	PCD	No of Bolts	RF Dia.	Bolt Size UNC	Machine Bolt Length	RF Stud Length	ISO Stud Size	Hole Size	Weight in kg
		B	D	A	E		C
15	1/2	9.6	2	90	60.3	4	34.9	1/2	50	55	M14	5/8	0.9
20	3/4	11.2	2	100	69.9	4	42.9	1/2	50	65	M14	5/8	0.9
25	1	12.7	2	110	79.4	4	50.8	1/2	55	65	M14	5/8	0.9
32	1 1/4	14.3	2	115	88.9	4	63.5	1/2	55	70	M14	5/8	1.4
40	1 1/2	15.9	2	125	98.4	4	73	1/2	65	70	M14	5/8	1.8
50	2	17.5	2	150	120.7	4	92.1	5/8	70	85	M16	3/4	2.3
65	2 1/2	20.7	2	180	139.7	4	104.8	5/8	75	90	M16	3/4	3.2
80	3	22.3	2	190	152.4	4	127	5/8	75	90	M16	3/4	4.1
90	3 1/2	22.3	2	215	177.8	8	139.7	5/8	75	90	M16	3/4	5.9
100	4	22.3	2	230	190.5	8	157.2	5/8	75	90	M16	3/4	7.7
125	5	22.3	2	255	215.9	8	185.7	3/4	85	95	M20	7/8	9.1
150	6	23.9	2	280	241.3	8	215.9	3/4	85	100	M20	7/8	11.8
200	8	27	2	345	298.5	8	269.9	3/4	90	110	M20	7/8	20.5
250	10	28.6	2	405	362	12	323.8	7/8	100	115	M24	1	32
300	12	30.2	2	485	431.8	12	381	7/8	100	120	M24	1	50
350	14	33.4	2	535	476.3	12	412.8	1	115	135	M27	1 1/8	64
400	16	35	2	595	539.8	16	469.9	1	115	135	M27	1 1/8	82
450	18	38.1	2	635	577.9	16	533.4	1 1/8	125	145	M30	1 1/4	100
500	20	41.3	2	700	635	20	584.2	1 1/8	140	160	M30	1 1/4	130
600	24	46.1	2	815	749.3	20	692.2	1 1/4	150	170	M33	1 3/8	196

Size in mm	Flange Thick.	Size in Inch	RF Dia.	No of Bolts	Outer Dia.	RF Height	PCD	Bolt Size UNC	Hole Size	RF Stud Length	ISO Stud Size	Weight in kg
	B		C		A	D	E
15	14.3	1/2	34.9	4	95	7	66.7	1/2	5/8	75	M14	1.5
20	15.9	3/4	42.9	4	115	7	82.6	5/8	3/4	90	M16	1.5
25	17.5	1	50.8	4	125	7	88.9	5/8	3/4	90	M16	1.8
32	20.7	1 1/4	63.5	4	135	7	98.4	5/8	3/4	95	M16	2.3
40	22.3	1 1/2	73	4	155	7	114.3	3/4	7/8	110	M20	3.7
50	25.4	2	92.1	8	165	7	127	5/8	3/4	110	M16	4.6
65	28.6	2 1/2	104.8	8	190	7	149.2	3/4	7/8	120	M20	6.8
80	31.8	3	127	8	210	7	168.3	3/4	7/8	125	M20	9.1
90	35	3 1/2	N/A	8	230	7	184.2	7/8	1	140	M24	13.2
100	35	4	157.2	8	255	7	200	7/8	1	140	M24	15
125	38.1	5	185.7	8	280	7	235	7/8	1	145	M24	20
150	41.3	6	215.9	12	320	7	269.9	7/8	1	150	M24	28
200	47.7	8	269.9	12	380	7	330	1	1 1/8	170	M27	46
250	54	10	323.8	16	445	7	387.4	1 1/8	1 1/4	190	M30	71
300	57.2	12	381	16	520	7	450.8	1 1/4	1 3/8	205	M33	102
350	60.4	14	412.8	20	585	7	514.4	1 1/4	1 3/8	210	M33	132
400	63.5	16	469.9	20	650	7	571.5	1 3/8	1 1/2	220	M36	168
450	66.7	18	533.4	24	710	7	628.6	1 3/8	1 1/2	230	M36	207
500	69.9	20	584.2	24	775	7	685.8	1 1/2	1 3/4	240	M39	266
600	76.2	24	692.2	24	915	7	812.8	1 3/4	1 7/8	265	M45	405

Size in mm	RF Dia.	Outer Dia.	Size in Inch	Flange Thick.	PCD	RF Stud Length	No of Bolts	RF Height	Bolt Size UNC	Hole Size	ISO Stud Size	Weight in kg
	C	A		B	E			D
15	34.9	120	1/2	22.3	82.6	110	4	7	3/4	7/8	M20	1.8
20	42.9	130	3/4	25.4	88.9	115	4	7	3/4	7/8	M20	2.7
25	50.8	150	1	28.6	101.6	125	4	7	7/8	1	M24	3.6
32	63.5	160	1 1/4	28.6	111.1	125	4	7	7/8	1	M24	4.1
40	73	180	1 1/2	31.8	123.8	140	4	7	1	1 1/8	M27	5.9
50	92.1	215	2	38.1	165.1	145	8	7	7/8	1	M24	10.1
65	104.8	245	2 1/2	41.3	190.5	160	8	7	1	1 1/8	M27	16
80	127	240	3	38.1	190.5	145	8	7	7/8	1	M24	13
100	157.2	290	4	44.5	235	170	8	7	1 1/8	1 1/4	M30	24.5
125	185.7	350	5	50.8	279.4	190	8	7	1 1/4	1 3/8	M33	39.5
150	215.9	380	6	55.6	317.5	190	12	7	1 1/8	1 1/4	M30	53
200	269.9	470	8	63.5	393.7	220	12	7	1 3/8	1 1/2	M36	91
250	323.8	545	10	69.9	469.9	235	16	7	1 3/8	1 1/2	M36	132
300	381	610	12	79.4	533.4	255	20	7	1 3/8	1 1/2	M36	189
350	412.8	640	14	85.8	558.8	275	20	7	1 1/2	1 5/8	M39	237
400	469.9	705	16	88.9	616	285	20	7	1 5/8	1 3/4	M42	273
450	533.4	785	18	101.6	685.8	325	20	7	1 7/8	2	M48	367
500	584.2	855	20	108	749.3	350	20	7	2	2 1/8	M52	463
600	692.2	1040	24	139.7	901.7	440	20	7	2 1/2	2 5/8	M64	875

Check Hastelloy C276 High Hub BLRF Flange Bolting Torque Tables, we accept small/ large orders of Raised/ Flat Face Blind Flange

Size in mm	Size in Inch	Outer Dia.	RF Dia.	Flange Thick.	RF Height	Weight in kg	No of Bolts	Machine Bolt Length	Bolt Size UNC	RF Stud Length	PCD	Hole Size	ISO Stud Size
		A	C	B	D						E
15	1/2	95	34.9	12.7	2	1.4	4	55	1/2	65	66.7	5/8	M14
20	3/4	115	42.9	14.3	2	1.4	4	65	5/8	75	82.6	3/4	M16
25	1	125	50.8	15.9	2	1.4	4	65	5/8	75	88.9	3/4	M16
32	1 1/4	135	63.5	17.5	2	1.8	4	70	5/8	85	98.4	3/4	M16
40	1 1/2	155	73	19.1	2	2.7	4	75	3/4	90	114.3	7/8	M20
50	2	165	92.1	20.7	2	3.7	8	75	5/8	90	127	3/4	M16
65	2 1/2	190	104.8	23.9	2	5.5	8	85	3/4	100	149.2	7/8	M20
80	3	210	127	27	2	7.3	8	90	3/4	110	168.3	7/8	M20
90	3 1/2	230	139.7	28.6	2	9.6	8	95	3/4	110	184.2	7/8	M20
100	4	255	157.2	30.2	2	12.3	8	95	3/4	115	200	7/8	M20
125	5	280	185.7	33.4	2	15.9	8	110	3/4	120	235	7/8	M20
150	6	320	215.9	35	2	22.7	12	110	3/4	120	269.9	7/8	M20
200	8	380	269.9	39.7	2	36	12	120	7/8	140	330.2	1	M24
250	10	445	323.8	46.1	2	57	16	140	1	160	387.4	1 1/8	M27
300	12	520	381	49.3	2	84	16	145	1 1/8	170	450.8	1 1/4	M30
350	14	585	412.8	52.4	2	113	20	160	1 1/8	180	514.4	1 1/4	M30
400	16	650	469.9	55.6	2	134	20	165	1 1/4	190	571.5	1 3/8	M33
450	18	710	533.4	58.8	2	181	24	170	1 1/4	195	628.6	1 3/8	M33
500	20	775	584.2	62	2	230	24	185	1 1/4	205	685.8	1 3/8	M33
600	24	915	692.2	68.3	2	359	24	205	1 1/2	230	812.8	1 5/8	M39

Size in mm	Flange Thick.	Size in Inch	RF Dia.	Outer Dia.	No of Bolts	RF Height	Bolt Size UNC	PCD	RF Stud Length	ISO Stud Size	Hole Size	Weight in kg
	B		C	A		D		E
15	14.3	1/2	34.9	95	4	7	1/2	66.7	75	M14	5/8	1.4
20	15.9	3/4	42.9	115	4	7	5/8	82.6	90	M16	3/4	1.4
25	17.5	1	50.8	125	4	7	5/8	88.9	90	M16	3/4	1.8
32	20.7	1 1/4	63.5	135	4	7	5/8	98.4	95	M16	3/4	2.3
40	22.3	1 1/2	73	155	4	7	3/4	114.3	110	M20	7/8	3.7
50	25.4	2	92.1	165	8	7	5/8	127	110	M16	3/4	4.6
65	28.6	2 1/2	104.8	190	8	7	3/4	149.2	120	M20	7/8	6.8
80	31.8	3	127	210	8	7	3/4	168.3	125	M20	7/8	9.1
90	35	3 1/2	N/A	230	8	7	7/8	184.2	140	M24	1	13.2
100	38.1	4	157.2	275	8	7	7/8	215.9	145	M24	1	18.7
125	44.5	5	185.7	330	8	7	1	266.7	165	M27	1 1/8	31
150	47.7	6	215.9	355	12	7	1	292.1	170	M27	1 1/8	39
200	55.6	8	269.9	420	12	7	1 1/8	349.2	190	M30	1 1/4	64
250	63.5	10	323.8	510	16	7	1 1/4	431.8	215	M33	1 3/8	105
300	66.7	12	381	560	20	7	1 1/4	489	220	M33	1 3/8	134
350	69.9	14	412.8	605	20	7	1 3/8	527	235	M36	1 1/2	161
400	76.2	16	469.9	685	20	7	1 1/2	603.2	255	M39	1 5/8	225
450	82.6	18	533.4	745	20	7	1 5/8	654	275	M42	1 3/4	286
500	88.9	20	584.2	815	24	7	1 5/8	723.9	285	M42	1 3/4	368
600	101.6	24	692.2	940	24	7	1 7/8	838.2	330	M48	2	568

Size in mm	PCD	Outer Dia.	RF Dia.	Flange Thick.	RF Height	Bolt Size UNC	No of Bolts	RF Stud Length	Hole Size	Size in Inch	ISO Stud Size	Size in Inch	Weight in kg
	E	A	C	B	D
15	88.9	135	34.9	30.2	7	3/4	4	120	7/8	1/2	M20	1/2	3.2
20	95.2	140	42.9	31.8	7	3/4	4	125	7/8	3/4	M20	3/4	3.7
25	108	160	50.8	35	7	7/8	4	140	1	1	M24	1	5
32	130.2	185	63.5	38.1	7	1	4	150	1 1/8	1 1/4	M27	1 1/4	7.8
40	146	205	73	44.5	7	1 1/8	4	170	1 1/4	1 1/2	M30	1 1/2	10.5
50	171.4	235	92.1	50.9	7	1	8	180	1 1/8	2	M27	2	18
65	196.8	265	104.8	57.2	7	1 1/8	8	195	1 1/4	2 1/2	M30	2 1/2	25.5
80	228.6	305	127	66.7	7	1 1/4	8	220	1 3/8	3	M33	3	39
100	273	355	157.2	76.2	7	1 1/2	8	255	1 5/8	4	M39	4	61.5
125	323.8	420	185.7	92.1	7	1 3/4	8	300	1 7/8	5	M45	5	102
150	368.3	485	215.9	108	7	2	8	345	2 1/8	6	M52	6	157
200	438.2	550	269.9	127	7	2	12	380	2 1/8	8	M52	8	241
250	539.8	675	323.8	165.1	7	2 1/2	12	490	2 5/8	10	M64	10	470
300	619.1	760	381	184.2	7	2 3/4	12	540	2 7/8	12	M72	12	575

Exporter of SS 304 Blind Flange and Inconel PN16 Blank Flange with UT, MT or PT Non-destructive testing or as required

Size in Inch	Outer Dia.	RF Dia.	RF Height	Flange Thick.	PCD	Size in mm	Bolt Size UNC	No of Bolts	RF Stud Length	ISO Stud Size	Hole Size	Weight in kg
	A	C	D	B	E
1/2	120	34.9	7	22.3	82.6	15	3/4	4	110	M20	7/8	1.8
3/4	130	42.9	7	25.4	88.9	20	3/4	4	115	M20	7/8	2.7
1	150	50.8	7	28.6	101.6	25	7/8	4	125	M24	1	3.7
1 1/4	160	63.5	7	28.6	111.1	32	7/8	4	125	M24	1	4.1
1 1/2	180	73	7	31.8	123.8	40	1	4	140	M27	1 1/8	5.9
2	215	92.1	7	38.1	165.1	50	7/8	8	145	M24	1	10.1
2 1/2	245	104.8	7	41.3	190.5	65	1	8	160	M27	1 1/8	15.9
3	265	127	7	47.7	203.2	80	1 1/8	8	180	M30	1 1/4	21.8
4	310	157.2	7	54	241.3	100	1 1/4	8	195	M33	1 3/8	33
5	375	185.7	7	73.1	292.1	125	1 1/2	8	250	M39	1 5/8	64
6	395	215.9	7	82.6	317.5	150	1 3/8	12	260	M36	1 1/2	75
8	485	269.9	7	92.1	393.7	200	1 5/8	12	290	M42	1 3/4	136
10	585	323.8	7	108	482.6	250	1 7/8	12	335	M48	2	232
12	675	381	7	123.9	571.5	300	2	16	375	M52	2 1/8	314
14	750	412.8	7	133.4	635	350	2 1/4	16	405	M56	2 3/8	443
16	825	469.9	7	146.1	704.8	400	2 1/2	16	445	M64	2 5/8	591
18	915	533.4	7	162	774.7	450	2 3/4	16	495	M72	2 7/8	795
20	985	584.2	7	177.8	831.8	500	3	16	540	M76	3 1/8	1022
24	1170	692.2	7	203.2	990.6	600	3 1/2	16	615	M90	3 5/8	1648

Oil & Gas	Paper	Defence	Ports	Breweries	Railway
Chemical	Petrochemical	Oil Mills	Mining	Refineries	Construction
Fertilizers	Power Plant	Shipbuilding	Steel Plant	Nuclear Power	Offshore
Cement	Sugar &	Engineering Co.	Government Org. etc.

Outside Diameter of Hub
≤ 12 = + 2.4 mm / - 1.6 mm
≥ 14 = ± 3.2 mm

Drilling
Bolt Circle = 1.6 mm
Bolt Hole Spacing = ± 0.8 mm

Eccentricity of Bolt Circle
≤ 2.1/2 = 0.8 mm max.
≥ 3 = 1.6 mm max.

Thickness
≤ 18 = + 3.2 mm / - 0
≥ 20 = + 4.8 mm / - 0

Outside Diameter *
Tolerances not listed in ASME B16.5 2013
≤ 24 = 1.6 mm
> 24 = ± 3.2 mm

Length thru Hub
≤ 18 = + 3.2 mm / - 0.8 mm
≥ 20 = + 4.8 mm / - 1.6 mm

Diameter of Contact Face
1.6 mm Raised Face = ± 0.8 mm
6.35 mm Raised Face
Tongue and Groove / Male-Female ± 0.4 mm

India's leading manufacturer of ASTM A105 Blind Flange, Ductile Iron Blank Flange offers own Pressure Test Facility

Number of Holes	Outside Diameter (O)	Nominal Pipe Size	Min Thickness (T)	Approximate Weight (lbs)	Raised Face Diameter (R)	Bolt Circle (C)	Diameter of Holes
24	34.25	26	2.69	702	29.50	31.75	1.38
28	36.50	28	2.81	833	31.50	34.00	1.38
28	38.75	30	2.94	982	33.75	36.00	1.38
28	41.75	32	3.19	1238	36.00	38.50	1.62
32	43.75	34	3.25	1384	38.00	40.50	1.62
32	46.00	36	3.56	1676	40.25	42.75	1.62
32	48.75	38	3.44	1819	42.25	45.25	1.62
36	50.75	40	3.56	2040	44.25	47.25	1.62
36	53.00	42	3.81	2380	47.00	49.50	1.62
40	55.25	44	4.00	2715	49.00	51.75	1.62
40	57.25	46	4.06	2961	51.00	53.75	1.62
44	59.50	48	4.25	3350	53.50	56.00	1.62
44	61.75	50	4.38	3716	55.50	58.25	1.88
44	64.00	52	4.56	4156	57.50	60.50	1.88
44	66.25	54	4.75	4639	59.50	62.75	1.88
48	68.75	56	4.88	5130	62.00	65.00	1.88
48	71.00	58	5.06	5675	64.00	67.25	1.88
52	73.00	60	5.19	6155	66.00	69.25	1.88

Block B Gas Project Vietnam

ADCO - Shah Field Compressor Unit-Dubai

Gorgon LNG Train 4-Australia

Bass Strait Additional Oil Drilling Facilities Bass Strait, Australia

Binh Dai 1 - Phase 3-Vietnam

Petrovietnam Vietnam