Stainless Steel Blind Flange

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Looking for Blind Flange manufacturers in India in Class 150/ 300/ 600 ? We produce BLRF Flange in Carbon Steel, SS, Hastelloy, Nickel, Inconel, AS, Copper, Titanium and Aluminium Alloy

What is a Blind Flange?
The blind flange can be described as a flange without a hub or a bore in the center. They come with the same face thickness as that of a flange, along with a matching face type and a bolting pattern which is also quite similar. The blind flanges are used for sealing the ends of a pipe or the open nozzle of a pressure vessel. They are bolted to the pipes, which helps in providing easy access to the interior unlike a welded flange or cap.
The blind flange is a solid disk without any holes or openings, this prevents any liquid or gas from passing through it. The blind flange is placed between two flanges so as to stop the flow through the pipe. They help in performing repairs and maintenance inside the pipeline, by shutting off the pipe run easily. It also helps in speeding up the process of constructing a pipeline.

What is Carbon steel blind flange Face Types
Carbon steel blind flange, just like any other flange, comes with two types of faces, namely raised face and flat face.

What is the difference between blank and blind flange?
A blank flange can be described as a thin plate that is placed in between two flanges in the piping system, so as to stop the flow the pipe runs. Whereas, the blind flange is a thick solid plate with no hubs or bore in the middle but bolted holes throughout its perimeter. It helps to stop the flow at the end of the pipe.

Where is Stainless Steel Blind Flange used?
The Where is Stainless Steel Blind Flanges are used for sealing the ends of the pipes or the nozzle of the pressure vessel. They help to cut off the connection of a pipe, and also comes in handy when inspection or maintenance and repair works need to be carried out inside the piping system. The material grade of the flange is temperature and corrosion resistant, with high tensile strength and durability. Thus, they can be used for high temperature and pressure applications.

Blind Flanges for Hydro test
The hydro test for blind flanges is carried out so as to check its structural integrity. This is a type of pressure test, wherein the flanges are pressured to see if they are leaking. It helps to understand the strength of the flange.

Stainless Steel Blind Flange

Stainless Steel Blind Flange

European Directive 2014/68/eu certified ASTM A105 Carbon Steel Blind Flange manufacturers in Mumbai offers widest selection of EN 1092-2 ASTM A516 Gr.70 Reducing Blind Flange and A350 LF2 Blank Flange in India

Table of Content


Dimensions  ASME B16.5, ASME B16.47 Series A & B, MSS SP44
Size 1/2" to 48"
Class 300 LBS, 150 LBS, 900 LBS, 600 LBS, 1500 LBS, 2500 LBS
JIS 5K, 16 K 10 K, 20 K, 40 K, 30 K, 63 K
UNI 6Bar 16Bar 10Bar 25Bar 40Bar
Coating/Surface Treatment By Manufacturer Antirust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized
EN 6Bar 25Bar 10Bar 40Bar 16Bar
BS BS4504, BS4504, BS1560, BS10
Flanges Face Type Provided By Manufacturer RF (Raised Face), RTJ (Ring Type Joint)
Value Added Services CNC Machining, Customised Flanges
Making Methods Provided By Manufacturer Casting And Forging
Rolling And Cutting
Flanges Test Hydrostatic testing machine/ UI trasonic flaw detector/ X-ray detector/ Direct-reading Spectrograph/ Magnetic particle detector
Flanges Equipment Pushing Machine/ electric bevelling machine/ Press machine/ Bending machine/ Sand-blasting machine etc
Outer diameters 1/2” to 24”
Standards Provided By Manufacturer EN-1092, DIN, API7S-43, API605, B16.48, ISO70051, MSS S44, ANSI/ASME B16.5, B16.47 Series A & B, BS4504, BS 10, API7S-15, JISB2220, BS1560-3.1, ASME/ANSI B16.5/16.36/16.47A/16.47B, EN1092

Well known Stainless Steel Blind Flange supplier, wholesalers, exporters, dealers, importer, stockists, stockholders, distributor and Manufacturer in Mumbai

Stainless Steel ASTM A182 Gr. 304, 304L, 309, 316, 310, 316L, 317L, 321, 347, 904L
Duplex Steel ASTM A 182, ASME SA 182 UNS NO S31803, S32205. Werkstoff No. 1.4462
Carbon Steel High Yield CS ASTM A694 / A694 (F52 F56 F60 F65 F70 F80), A181 LF2, A105N, ASTM A350 LF2 / ASME SA350, ASTM/ASME A/SA105 A/SA105N & ASTM A105 / ASME SA105, P235GH, P245GH, P250GH, RST37.2, C22.8, S235JR, ST37, A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F706
Copper Nickel Cupro Nickel 70/30 (C71500), Copper Nickel 90/10 (C70600 ), ASTM / ASME SB 62 / 151 / 61 / 152, UNS C71640
Nickel Alloy ASTM / ASME SB 564 UNS 4400 (MONEL 400 ), UNS 2200 ( NICKEL 200 ), UNS 8825 INCONEL (825), UNS 2201 (NICKEL 201 ), UNS 8020 ( ALLOY 20 / 20 CB 3, UNS 6601 ( INCONEL 601 ), UNS 6625 (INCONEL 625), UNS 6600 (INCONEL 600 ), UNS 10276 ( HASTELLOY C 276 )
Alloy Steel F11, F12, F5, F9, F22, F91
Other Titanium, Aluminium, 254 SMO

What is a blind flange?

A blind flange can be described as a solid disk used for blocking a section of a pipeline or nozzle. It has mounting holes around its perimeter and consists of gasket sealing rings machined into the mating surface. Unlike a regular flanges, blind flanges do not have an opening for the liquid to pass through them. These are placed between two open flanges to stop the liquid flow without any hassles. BLRF prove to be very useful during the maintenance work of a pipeline or add a new line or valve to the existing pipeline.

What is type 05?

The blind flanges type 05 is widely used in installations, piping systems, or equipment construction to close an open end of the pipe. At Petromet, you will get BLRF of various qualities according to your requirements. We have a vast stock of fixings available for various pipe sizes and pressure classes (PN 6 to PN 100).

How to drill holes in BLRF?

For some instances, BLRF flanges need a threaded hole to be tapped in the center for inspection or venting purposes. The flange must be thick enough to allow the effective thread length mentioned in the table below for tapped threaded holes. For other cases, a boss needs to be added for reinforcement. It is vital to ensure that the effective thread length T should be less than what is mentioned in the table in no case. The measurements are equal to the effective thread length of external pipe threads. Primarily, one can find the application of ½” tapping holes.

Size

T

⅜”

10.5

1/2"

13.5

3/4"

14.0

1"

17.5

1-1/4"

18.1

1-1/2"

18.3

2"

19.4

Where S is the connection size- NPS, and T is the minimum threaded length- mm.

How to measure size?

To inspect the size and dimension of a blind flange, one needs to check the following things:

  1. They should consider the out diameter of the body.
  2. Also, check the bolt circle and the bolt hole diameter.
  3. It is crucial to have a look at the straightness and alignment of the bolt hole.
  4. And finally, the thickness of the blind should also be considered.

The dimensions are covered in ASME B16.5 for the size NPS ½” to NPS 24. It is covered in ASME B16.47 for the size above NPS 26" to NPS 60".

Uses & applications

The primary purpose of a blind flange is to terminate the end of a pipeline. This makes the maintenance of the pipeline easier. It also helps in sealing the nozzle opening in a pressure vessel.

What is the difference between a blank and a blind flange?

A blank flange can be described as a thin plate between pipe flanges in a pipeline to stop the flow. BLRF are thick, with or without bolt holes in the middle. It helps in controlling the flow through the pipe’s end.

Contact directly a Blind Flange manufacturers in India for lowest price, buy rf/ ff/ rtj face PN16 Blank Flange and Ductile Iron Blank Flange at Unbeatable Prices in Asia

NPS (Nominal Pipe Size) NPT (Threaded) WRNR (Weld Neck) SWRF (Socket Weld) Loose (Lap Joint) SORF (Slip On) BLRF (Blind)
½ 1 2 2 1 1 2
¾ 2 2 2 2 2 2
1 2 3 2 2 2 2
1¼ 3 3 3 3 3 3
1½ 3 4 3 3 3 4
2 5 6 5 5 5 5
2½ 8 10 8 8 8 7
3 9 11.5 9 9 9 9
3½ 12 12 11 11 11 13
4 13 16.5 13 13 13 17
5 15 21 15 15 15 20
6 19 26 19 19 19 27
8 30 42 30 30 30 47
10 43 54 43 43 43 70
12 64 88 64 64 64 123
14 90 114 90 105 90 140
16 98 140 98 140 106 180
18 130 165 130 160 130 220
20 165 197 165 195 165 285
22 185 225 185 245 185 355
24 220 268 220 275 220 430
Carbon Steel Blind Flange

Carbon Steel Blind Flange

Blind Flange A105

Blind Flange A105

Mild Steel Raised Face Blind Flange

Mild Steel Raised Face Blind Flange

A105 Blind Flange

A105 Blind Flange

Ductile Iron Blind Flange

Ductile Iron Blind Flange

Alloy Steel Blind Flange

Alloy Steel Blind Flange

Aluminum Blank Flange

Aluminum Blank Flange

Stainless Steel 304 Blank Flange

Stainless Steel 304 Blank Flange

SAE Blind Flange

SAE Blind Flange

12 Inch Blind Flange

12 Inch Blind Flange

PN16 Blank Flange

PN16 Blank Flange

ASTM A182 F304 High Hub Blind Flange

ASTM A182 F304 High Hub Blind Flange

Nickel Alloy High Hub Blind Flange

Nickel Alloy High Hub Blind Flange

A182 F11 Reducing Blind Flange

A182 F11 Reducing Blind Flange

Titanium Rf Blind Flange

Titanium Rf Blind Flange

Hastelloy Reducing Blind Flange

Hastelloy Reducing Blind Flange

Ductile Iron Blank Flange

Ductile Iron Blank Flange

Gi Blind Flange

Gi Blind Flange

Alloy Steel Threaded Blind Flange

Alloy Steel Threaded Blind Flange

PN16 Blind Flange

PN16 Blind Flange

Duplex Blank Flange

Duplex Blank Flange

UNS S31803 Blind Flange With Threaded Hole

UNS S31803 Blind Flange With Threaded Hole

Cs Blind Flange

Cs Blind Flange

316 Stainless Steel Blind Flange

316 Stainless Steel Blind Flange

ASTM A182 F316 Raised Face Blind Flange

ASTM A182 F316 Raised Face Blind Flange

Super Duplex Threaded Blind Flange

Super Duplex Threaded Blind Flange

SS 304 Blind Flange

SS 304 Blind Flange

2 Inch Blind Flange

2 Inch Blind Flange

316 SS Blind Flange

316 SS Blind Flange

Copper Flat Face Blind Flange

Copper Flat Face Blind Flange

ASTM A350 LF2 Flat Face Blind Flange

ASTM A350 LF2 Flat Face Blind Flange

Inconel Blind Flange With Threaded Hole

Inconel Blind Flange With Threaded Hole

ASTM A516 Gr.70 Rf Blind Flange

ASTM A516 Gr.70 Rf Blind Flange

t = d *(CP/SE+1.9W hg/SE*d^3) ½

  • d= Diameter or short span, measured as indicated in Fig. UG-34
  • E= Joint efficiency, from Table UW-12, of any category A weld as defined in UG-3(a)
  • S= Maximum allowable stress value in tension from applicable table of value
  • W= Total bolt load
  • hg= Gasket moment arm, equal to the radial distance from the centerline of the bolts to the line of the gasket reaction
  • P = Design pressure-HYDROTEST pressure is considered (13.5 bar (g))
  • C = 0.3 From Fig UG-34(j)
Stainless Steel Blind Flange Price Per Piece in India Stainless Steel BLRF Flanges Price in INR SS Blank Flanges Price in UAE Dirham Stainless Steel RF Blind Orifice Flanges Fitting Price in USD
FLANGES STAINLESS STEEL GR 182 F304 VIAR SEAL RING BLIND Per Kg 37,155 UAE Dirham 1840.95 $501.21
FLANGES STAINLESS STEEL SA182 GR.F 304 BLIND CO-133,THK55MM Per Kg 686 UAE Dirham 33.99 $9.25
STAINLESS STEEL FLANGES GRADE 304L - SIZE: 8 150 # BLIND RF Per Piece 4,957 UAE Dirham 245.61 $66.87

We are Blind Flange manufacturers in India. This is an approximate Cost of ASME B16.5 BLRF Flange in India. Compare our price with other PN16 Blank Flange manufacturer in India.

Supplier of 2 Inch/12 Inch SS 304 Blind Flange With Threaded Hole in Mumbai, manufacturer of Titanium Raised Face Blind Flange and ASTM A182 F316 High Hub Blind Flange offers hydrostatic testing to ensure tightness and strength

Carbon Steel Blind Flanges Price Per Piece in India Carbon A105 BLRF Flanges Price in INR CS Blank Flanges Price in UAE Dirham ASTM A350 LF2 RF Blind Orifice Flanges Fitting Price in USD
CARBON STEEL FLANGES - BLIND, A105 RF, CL150, DN150 Per Kg 152 UAE Dirham 7.53 $2.05
Blind Flanges RF Class 600 2 Inch A105N Per Unit 1,126 UAE Dirham 55.79 $15.19
FLANGES 2 , 150# BLIND RD A105N Per Piece 1,039 UAE Dirham 51.48 $14.01

Class 150 Blind Flange

Size
in Inch		 Size
in mm		 Outer
Dia.		 Flanges
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

Class 300 Blind Flange

Size
in Inch		 Size
in mm		 Outer
Dia.		 Flanges
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 600 Blind Flange

Size in Inch Size in mm Outer Dia. Flanges 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
Check large diameter Mild Steel SAE Blind Flange and Nickel Alloy Forged Blind Flange torque chart & price in India, manufacturing various types including High Hub, Tapped, Threaded Blind Flange, check PN16 ASTM A182 F304 Blank Flange dimensions

Class 900 Blind Flange

Size in Inch Size in mm Outer Dia. Flanges 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

Size in Inch Size in mm Outer Dia. Flanges 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

Size in Inch Size in mm Outer Dia. Flanges 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
Manufacturer of ASTM A707 Grade L5 Blank Flange and Alloy Steel ASTM A694 F42 blind flange for hydrotest, manufactring Raised Flat Face & Rf Blind Flange in various matals including Copper, Aluminum, Nickel, Brass, Monel, Inconel, Alloy 20, 254 SMO, and Hastelloy
HS Code 73072100

SAE Blind Flange

DIN 2527 PN16 BLIND FLANGES
Rated
Diameter 		Flanges Screws Weight
(7,85 Kg/dm3)
D b k Number Thread d2 Shape B
Kg
15 95 14 65 4 M 12 14 0,72
20 105 16 75 1,01
25 115 16 85 1,23
32 140 16 100 M 16 18 1,8
40 150 16 110 2,09
50 165 18 125 2,88
65 185 18 145 3,66
80 200 20 160 8 4,77
100 220 20 180 5,65
125 250 22 210 8,42
150 285 22 240 M 20 22 10,4
200 340 24 295 12 16,1
250 405 26 355 M 24 26 24,9
300 460 28 410 35,1
350 520 30 470 16 47,8
400 580 32 525 M 27 30 63,5
500 715 36 650 20 M 30 33 102
ANSI 150#
Pipe NBBolt PCDNo. of BoltsBolt SizeFlanges OD
1/2"2 3/8"41/2"3 1/2"
1"3 1/8"41/2"4 1/4"
2"4 3/4"45/8"6"
4"7 1/2"85/8"9"
6"9 1/2"83/4"11"
8"11 3/4"83/4"13 1/2"
10"14 1/4"127/8"16"
12"17 "127/8"19"
14"18 3/4"121"21"
Temp
-29 °C
150
300
400
600
900
1500
2500
50
19.2
50.1
66.8
100.2
150.4
250.6
417.7
38
19.6
51.1
68.1
102.1
153.2
255.3
425.5
150
15.8
45.1
60.1
90.2
135.2
225.4
375.6
100
17.7
46.6
62.1
93.2
139.8
233
388.3
250
12.1
41.9
55.9
83.9
125.8
209.7
349.5
200
13.8
43.8
58.4
87.6
131.4
219
365
300
10.2
39.8
53.1
79.6
119.5
199.1
331.8
350
8.4
37.6
50.1
75.1
112.7
187.8
313
325
9.3
38.7
51.6
77.4
116.1
193.6
322.6
375
7.4
36.4
48.5
72.7
109.1
181.8
303.1
425
5.5
28.8
38.4
57.5
86.3
143.8
239.7
400
6.5
34.7
46.3
69.4
104.2
173.6
289.3
450
4.6
23
30.7
46
69
115
191.7
500
2.8
11.8
15.7
23.5
35.3
58.8
97.9
475
3.7
17.4
23.2
34.9
52.3
87.2
145.3
538
1.4
5.9
7.9
11.8
17.7
29.5
49.2
  • Refineries
  • Nuclear Power
  • Marine Applications
  • Paper & Pulp
  • Power Plants
  • Fossil Fuel Power Plants
  • Ship Building
  • Oil And Gas Industry
Outside Diameter ≤ 24 = 1.6 mm | > 24 = ± 3.2 mm Inside Diameter not applicable
Diameter of Contact Face 1.6 mm Raised Face = ± 0.8 mm6.35 mm Raised Face, Tongue & Groove / Male-Female = ± 0.4 mm Outside Diameter of Hub ≤ 12 = + 2.4 mm / – 1.6 mm | ≥ 14 = ± 3.2 mm
Diameter of Counterbore not applicable Drilling Bolt Circle = 1.6 mm | Bolt Hole Spacing = ± 0.8 mmEccentricity of Bolt Circle with Respect to Facing≤ 2½ = 0.8 mm max. | ≥ 3 = 1.6 mm max.
Thickness ≤ 18 = + 3.2 mm / – 0 | ≥ 20 = + 4.8 mm / – 0 Length thru Hub ≤ 18 = + 3.2 mm / – 0.8 mm | ≥ 20 = + 4.8 mm / – 1.6 mm

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