Blind Flanges

Blind Flanges / BLRF Flanges Manufacturer

ANSI B 16.5, ASME B 16.47, MSS SP44, ASTM A182 Blind Pipe Flanges & Raised Face Blind Flanges Manufacturer & Exporter in India

Stainless Steel Blind Flanges, Carbon Steel Blind Flanges, Alloy Steel Blind Flanges, Nickel Alloy Weld Blind Flanges, Monel Blind Flanges, Hastelloy Blind Flanges Dealer in India

Blind Flanges are basically employed to close the open ends of valves or piping systems. ACE ALLOYS LLP is one among the eminent Blind Flanges Manufacturers and suppliers of the contemporary market. We design ASME B16.5 Blind pipe flanges of various sizes and shapes with extreme dimensional precision. We finally finish our Raised Face Blind Flanges keeping all the national and international standards in view.

Blind Flanges
Blind Flanges

ANSI B16.5 Blind Flanges are generally used for mechanical purpose where the access is required inside a pipe. Our SS Blind Flanges are specially used to examine the fluid flow inside a pump system or valve.  Mostly our Carbon Steel Blind Flanges are deployed in high-pressure applications.

We own a squad of professional clientele who are pleased with the quality and performance of our Stainless Steel Blind Flanges. We properly train our employment team to acquire skills in designing our Inconel Blind Flanges using latest design techniques. All the machinery in our production department is of modern variety that designs flawless Monel Blind Flanges.

Raw material and metals to fabricate Forged Blind Flanges are lent from honest and genuine vendors of the market. Customized products are manufactured by altering the Blind flange dimensions as per the requirement of the client.

Please call us today to attain complete idea about our products. Communicate with our sales personnel in case of any queries. Hurry up!

Blind Flanges Availability:

  • Flate Face Blind Flanges
  • Raised Face Blind Flanges
  • Ring Type Joint Blind Flanges
  • Stainless Steel Blind Flanges
  • Carbon Steel Blind Flanges
  • Alloy Steel Blind Flanges
  • Nickel Alloy Steel Blind Flanges
  • Copper Alloy Blind Flanges
  • Duplex Steel Blind Flanges

Blind Flanges Specifications:

Size ½" (15 NB) to 48" (1200NB)
Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.
Standards ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
DIN DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
B.S BS4504 , BS4504, BS1560, BS10
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

Grade specifications of Blind Flanges

Stainless Steel Blind Raised Face Flanges
Standard ASTM A182 , A240
Grades F 304, 304L, 304H, 316, 316Ti, 316H, 316L, 316LN, 309S, 309H, 310S, 310H,317, 317L, 321, 321H, 347, 347H, 201, 202, 904L
Carbon Steel Blind Raised Face Flanges
Standard ASTM A105
Grades Gr. F42,46,52,56,60,65,70
Alloy Steel Blind Raised Face Flanges
Standard ASTM A182
Grades F1,F5,F9,F11,F22,F91
Nickel Alloy Steel Blind Raised Face Flanges
Standard ASTM SB564, SB160, SB472, SB162
Grades Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020),
Copper Alloy Blind Raised Face Flanges
Standard ASTM SB 61 , SB62 , SB151 , SB152
Grades UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200,
Duplex Steel Slip-On Raised Face Flanges
Standard ASTM A182, A240
Grades UNS F 44, F 45, F51, F 53, F 55, F 60, F 61

Blind Flange Dimensions – ANSI/ASME B16.5 Class 150 to Class 2500

Blind Flange Dimension
Size in Inch Size in mm Outer Dia. Flange Thickness 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
Size in Inch Size in mm Outer Dia. Flange Thickness 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
Size in Inch Size in mm Outer Dia. Flange Thickness 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
Size in Inch Size in mm Outer Dia. Flange Thickness 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
Size in Inch Size in mm Outer Dia. Flange Thickness 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
Size in Inch Size in mm Outer Dia. Flange Thickness 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
Size in Inch Size in mm Outer Dia. Flange Thickness 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

Available Grades of ANSI 16.5 Stainless Steel Blind Flanges

Types of Blind Flanges

  • Industry Standard Class 75 Blind Flanges
  • Industry Standard Class 150 Blind Flanges
  • Industry Standard Class 175 Blind Flanges
  • Industry Standard Class 250 Blind Flanges
  • Industry Standard Class 300 Blind Flanges
  • Industry Standard Class 350 Blind Flanges
  • Plate Blind Flanges
  • Ring Type Joint Blind Flanges
  • Drawing Blind Flanges
  • Square Blind Flanges
  • Nipo Blind Flanges
  • Reducing Blind Flanges
  • Forged Blind Flanges
  • Stainless Steel Blind Flanges
  • Industry Standard Class 125 Light-weight Blind Flanges
  • Industry Standard Class 125/150 Blind Flanges

Other Standards of ANSI / ASME / DIN Blind Flanges

  • ANSI B16.5 Blind Flanges
  • ANSI B16.5 Class 150 Blind Flanges
  • ANSI B16.5 Class 300 Blind Flanges
  • ANSI B16.5 Class 400 Blind Flanges
  • ANSI B16.5 Class 600 Blind Flanges
  • ANSI B16.5 Class 900 Blind Flanges
  • ANSI B16.5 Class 1500 Blind Flanges
  • ANSI B16.5 Class 2500 Blind Flanges
  • ASME B16.47 Series A Blind Flanges
  • ASME B16.47 Series B Blind Flanges
  • ANSI B16.36 Orifice Blind Flanges
  • DIN Blind Flanges PN6-PN40

For Blind Flanges price list as on :

Request the latest Blind Flanges Price List. Use the contact button below for Blind Flanges Ready stock information and updated price list.

Blind Flanges Applications

Off-Shore Oil Drilling Companies Power Generation Petrochemicals Gas Processing
Specialty Chemicals Pharmaceuticals Pharmaceutical Equipment Chemical Equipment
Sea Water Equipment Heat Exchangers Condensers Pulp & Paper Industry

Blind Flanges Manufacturer & Supplier


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