RF,SF,600#,ASME B16.5,ASTM A 182-F 316L BLIND FLANGE

Description

ASTM A105 BLRF and Stainless Steel 304 Blank Flange 

Flanges are mostly used to connect 2 pipes or to end a pipe. They are made up of different materials. Blind Flange does not have a boring centre, face thickness, and similar bolting pattern. Blind Flange manufacturers in India recommend these flanges to terminate a pipe or a tube. A blank Flange is used to create a seal at the end of the tube to prevent it from leaking. A Carbon Steel Blind Flange provides good resistance to corrosion with the addition of few hydrogenating agents. Rf Blind Flange also provides excellent resistance to acid, corrosion and alkali.  

Stainless Steel Blind Flange does not breed bacteria. Neither does it rust nor does it erode. Threaded Blind Flange has a tapered pipe thread that helps it to fit into a similar counterpart thus creating a tight seal. They are used in piping systems where welding can be hazardous. Raised Face Blind Flangeis used to concentrate the surface pressure applied when mating with the flanges. It reduces the surface area of the flange. It has a machine serrated finish. A raised face flange creates a tighter seal when compared to a flat face flange. 

High Hub Blind Flange has a raised face without a hole in the center. It is used to provide closure at the end of the pipe. Flat Face Blind Flange has full contact with the surface and is bolted onto the pipe to close it. It is a type of flange that is supplied without a hub. A105 Blind Flange can handle high stress that is caused by the pressure exerted internally. It helps us to easily repair a system without removing an entire pipe. 316 SS Blind Flange resists crevice corrosion and pitting. It has good welding and forming qualities.

Check Dimensions and pressure clas of EN 1092-2 PN16 Blind Flange & MSS SP-44 Class 150/ 300 Blind Flange, Stainless

Blind Flange Specification

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Size: 1/2″ (15 NB) to 48″ (1200NB)

Standards: ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings

Pressure Ratings: Class 150, Class 300, Class 400, Class 600, Class 900, Class1500, Class 2500 | PN6, PN10, PN16, PN25, PN40, PN64 etc.

Carbon Steel Blind Flanges/ BLRF Flanges: ASTM A105/A105N, A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, A694 F42, F46, F48, F50, F52, F56, F60, F65, F70, A516.60, 65, 70 (Spectacle Blind Flange, Spacer Ring/Spade Flange), Steel RST37.2, C22.8

Stainless Steel Blind Flanges/ BLRF Flanges: ASTM A182 F202, F304/304L/304H, F316/316L, F316H, F316TI, F310, F321, F904L

Alloy Steel Blind Flanges/ BLRF Flanges: ASTM A182 F1, F5, F9, F11, F22, F91

Special Alloy Blind Flanges/ BLRF Flanges: Duplex, Super Duplex, Nickel Alloys

Flange Face Type: Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

Coating/Surface Treatment: Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized

Value Added Services: CNC Machining, Customised Flanges

Features of blind flanges

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• Blind flanges are sometimes supplied with NPT fittings which allow pressure test connections to be fitted.
• They are used to blank off the ends of pipe.
• They are also used to blank off the ends of valves and pressure vessel opening.
• Considering factors like internal pressure and bolt loading, blind flanges, especially in the larger sizes, are the most highly stressed of all types of flanges.
• Since the maximum stresses in a blind flange are bending stresses at the center, they can safely be allowed to be higher than in other types of flanges.
• Blind flanges are made to fit standard pipes in all sizes.

Stainless Steel Blind Flanges Pressure

Supplier and exporter of Forged BS 4504/ DIN 86029 PN10 API/ Stainless Steel Blind Flange, and High Hub Blank Flange in Flat / Raised Face connection in India

• ANSI/ASME B16.5 Blind Flanges 150lb
• ANSI/ASME B16.5 Blind Flanges 300lb
• ANSI-ASME B16.5 Blind Flanges 400lb
• ANSI/ASME B16.5 Blind Flanges 600lb
• ANSI/ASME B16.5 Blind Flanges 900lb
• ANSI/ASME B16.5 Blind Flanges 1500lb
• ANSI/ASME B16.5 Blind Flanges 2500lb

• 

  Class 150 Blind Flange Dimensions

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

  
  

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  Class 300 Blind Flange Dimensions

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

  
  

  Class 400 Blind Flange Dimensions

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

  Class 600 Blind Flange Dimensions

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

  
  

  Class 900 Blind Flange Dimensions

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

  
  

  Class 1500 Blind Flange Dimensions

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

  Class 2500 Blind Flange Dimensions

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