Dhanratan Steel Industries is one of the leading blind flange suppliers in India, and we deal with different types of blind flanges. Our blind flanges are manufactured to the highest specifications so that they can be used in any application. We focus on producing hub blind flanges, MS blind flanges, and spectacle blind flanges for a wide range of customers in the oil and gas, petrochemicals, power generation, and other sectors.
ASME B16.5 Blind Flange, Alloy Steel Blind Plate Flange, ANSI B16.47 SWRF Flange, Stainless steel Blind Flange, Blind Flange Manufacturers in India, Carbon steel Blind Flange.
MS blind flanges are preferred for their durability and cost-effectiveness. The price list of MS blind flange is affordable, thus establishing itself as a popular choice for large-scale industrial and small projects. The stainless steel spectacle blind flanges are made from materials that do not corrode easily and can work in difficult conditions.
There are different types of blind flanges available, such as carbon steel blind flanges and 316 stainless steel blind flanges, which are made to suit the purpose, depending on the material strength and the conditions of the environment. Our copper nickel blind flanges are particularly suitable for industries using seawater and other marine applications because of their resistance and biofouling.
Carbon Steel Blind Flange at Best Price in India, SS 316/316L Blind Flanges, Manufacturer, Exporter & Supplier of ASME/ANSI B16.5 Carbon Steel Blind Flange,SS Blind Flange, Alloy Steel Blind Flange.
We pride ourselves on our quality and customer service. All our products, including SS blind flanges, are produced under strict quality control measures and according to AST M, ANSI and DIN standards. We are ISO compliant; hence, our manufacturing process complies with the best practices in the world.
We offer fast and efficient delivery and ensure that your order is delivered on time regardless of the destination. For those who require large quantities of flanges or if you have specific requirements, our expert team is always ready to help you every step of the way, making us one of the best partners for your flange needs.
Specifications of Blind Flange in India
| Dimensions | ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings |
| Size | 1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000 |
| Flange Face Type | Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ). |
| Class/Pressure | 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc. |
| DIN | DIN 2527, DIN 2566, DIN 2573, DIN 2576, DIN 2641, DIN 2642, DIN 2655, DIN 2656, DIN 2627, DIN 2628, DIN 2629, DIN 2631, DIN 2632, DIN 2633, DIN 2634, DIN 2635, DIN 2636,DIN 2637, DIN 2638, DIN 2673 |
| BS | BS 4504 , BS 4504, BS 1560, BS 10 |
| PN | PN6, PN10, PN16, PN25, PN40 |
Material & Grades of Blind Flange in India
Stainless Steel Blind Flange : ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904L Blind Flange
Duplex & Super Duplex Steel Blind Flange : ASTM A182 / ASME SA182 F44, F 45, F51, F 53, F 55, F 60, F 61 Blind Flange
Carbon Steel Blind Flange : ASTM A105 / ASME SA105 ASTM / ASME A 350 , ASTM A181 LF2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F706 Blind Flange
Low Temperature Carbon Steel Blind Flange: ASTM A350, LF2, LF3 Blind Flange
Alloy Steel Blind Flange : ASTM A182 / ASME SA182 & A387 F1, F5, F9, F11, F12, F22, F91 Blind Flange
Copper Alloy Steel Blind Flange : ASTM SB 61 , SB62 , SB151 , SB152 UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200
Nickel Alloy Blind Flange : ASTM SB564, SB160, SB472, SB162 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) Blind Flange
Dimensions of Blind Flange in India
| ANSI/ASME/ASA B16.5 150lb/sq.in. Flange BLIND-RF | |||||||
| ø | D | b | g | k | Holes | l | Kg. |
| 1/2" | 88,9 | 11,1 | 34,9 | 60,3 | 4 | 15,9 | 0,400 |
| 3/4" | 98,4 | 12,7 | 42,9 | 69,8 | 4 | 15,9 | 0,700 |
| 1" | 107,9 | 14,3 | 50,8 | 79,4 | 4 | 15,9 | 0,900 |
| 1 1/4" | 117,5 | 15,9 | 63,5 | 88,9 | 4 | 15,9 | 1,300 |
| 1 1/2" | 127,0 | 17,5 | 73,0 | 98,4 | 4 | 15,9 | 1,600 |
| 2" | 152,4 | 19,0 | 92,1 | 120,6 | 4 | 19,0 | 2,600 |
| 2 1/2" | 177,8 | 22,2 | 104,8 | 139,4 | 4 | 19,0 | 4,100 |
| 3" | 190,5 | 23,8 | 127,0 | 152,4 | 4 | 19,0 | 5,000 |
| 3 1/2" | 215,9 | 23,8 | 139,7 | 177,8 | 8 | 19,0 | 6,400 |
| 4" | 228,6 | 23,8 | 157,2 | 190,5 | 8 | 19,0 | 7,100 |
| 5" | 254,0 | 23,8 | 185,7 | 215,9 | 8 | 22,2 | 9,000 |
| 6" | 279,4 | 25,4 | 215,9 | 241,3 | 8 | 22,2 | 11,800 |
| 8" | 342,9 | 28,6 | 269,9 | 298,4 | 8 | 22,2 | 21,000 |
| 10" | 406,4 | 30,2 | 323,4 | 361,9 | 12 | 25,4 | 30,000 |
| 12" | 482,6 | 31,7 | 381,0 | 431,8 | 12 | 25,4 | 45,000 |
| 14" | 533,4 | 34,9 | 412,7 | 476,2 | 12 | 28,6 | 59,000 |
| 16" | 596,9 | 36,5 | 469,9 | 539,9 | 16 | 28,6 | 79,000 |
| 18" | 635,0 | 39,7 | 533,4 | 577,8 | 16 | 31,7 | 97,000 |
| 20" | 698,5 | 42,9 | 584,2 | 635,0 | 20 | 31,7 | 124,000 |
| 22" | 749,3 | 46,0 | 641,2 | 692,1 | 20 | 34,9 | 151,000 |
| 24" | 812,8 | 47,6 | 692,1 | 749,3 | 20 | 34,9 | 188,000 |
| ANSI/ASME/ASA B16.5 300lb/sq.in. Flange BLIND-RF | |||||||
| ø | D | b | g | k | Holes | l | Kg. |
| 1/2" | 95,2 | 14,3 | 34,9 | 66,7 | 4 | 15,9 | 0,700 |
| 3/4" | 117,5 | 15,9 | 42,9 | 82,5 | 4 | 19,0 | 1,200 |
| 1" | 123,8 | 17,5 | 50,8 | 88,9 | 4 | 19,0 | 1,500 |
| 1 1/4" | 133,3 | 19,0 | 63,5 | 98,4 | 4 | 19,0 | 2,000 |
| 1 1/2" | 155,6 | 20,6 | 73,0 | 114,3 | 4 | 22,2 | 2,900 |
| 2" | 165,1 | 22,2 | 92,1 | 127,0 | 8 | 19,0 | 3,400 |
| 2 1/2" | 190,5 | 25,4 | 104,8 | 149,2 | 8 | 22,2 | 5,100 |
| 3" | 209,5 | 28,6 | 127,0 | 168,3 | 8 | 22,2 | 7,000 |
| 3 1/2" | 228,6 | 30,2 | 139,7 | 184,1 | 8 | 22,2 | 8,900 |
| 4" | 254,0 | 31,7 | 157,2 | 200,0 | 8 | 22,2 | 11,800 |
| 5" | 279,4 | 34,9 | 185,7 | 234,9 | 8 | 22,2 | 15,500 |
| 6" | 317,5 | 36,5 | 215,9 | 269,9 | 12 | 22,2 | 21,300 |
| 8" | 381,0 | 41,3 | 269,9 | 330,2 | 12 | 25,4 | 35,200 |
| 10" | 444,5 | 47,6 | 323,8 | 387,3 | 16 | 28,6 | 57,000 |
| 12" | 520,7 | 50,8 | 381,0 | 450,8 | 16 | 31,7 | 82,000 |
| 14" | 584,2 | 54,0 | 412,7 | 514,3 | 20 | 31,7 | 106,000 |
| 16" | 647,7 | 57,1 | 469,9 | 571,5 | 20 | 34,9 | 140,000 |
| 18" | 711,2 | 60,3 | 533,4 | 628,6 | 24 | 34,9 | 178,000 |
| 20" | 774,7 | 63,5 | 584,2 | 685,8 | 24 | 34,9 | 223,000 |
| 22" | 838,2 | 66,7 | 641,2 | 742,9 | 24 | 41,3 | 270,000 |
| 24" | 914,4 | 69,8 | 692,1 | 812,8 | 24 | 41,3 | 345,000 |
| ANSI/ASME/ASA B16.5 600lb/sq.in. Flange BLIND-RF | |||||||
| ø | D | b | g | k | Holes | l | Kg. |
| 1/2" | 95,2 | 14,3 | 34,9 | 66,7 | 4 | 15,9 | 0,700 |
| 3/4" | 117,5 | 15,9 | 42,9 | 82,5 | 4 | 19,0 | 1,200 |
| 1" | 123,8 | 17,5 | 50,8 | 88,9 | 4 | 19,0 | 1,500 |
| 1 1/4" | 133,3 | 20,6 | 63,5 | 98,4 | 4 | 19,0 | 2,000 |
| 1 1/2" | 155,6 | 22,2 | 73,0 | 114,3 | 4 | 22,2 | 3,200 |
| 2" | 165,1 | 25,4 | 92,1 | 127,0 | 8 | 19,0 | 4,300 |
| 2 1/2" | 190,5 | 28,6 | 104,8 | 149,2 | 8 | 22,2 | 6,000 |
| 3" | 209,5 | 31,7 | 127,0 | 168,3 | 8 | 22,2 | 8,000 |
| 3 1/2" | 228,6 | 34,9 | 139,7 | 184,1 | 8 | 25,4 | 10,500 |
| 4" | 273,0 | 38,1 | 157,2 | 215,9 | 8 | 25,4 | 18,000 |
| 5" | 330,2 | 44,4 | 185,7 | 266,7 | 8 | 28,6 | 28,500 |
| 6" | 355,6 | 47,6 | 215,9 | 292,1 | 12 | 28,6 | 35,500 |
| 8" | 419,1 | 55,6 | 269,9 | 349,2 | 12 | 31,7 | 58,000 |
| 10" | 508,0 | 63,5 | 323,8 | 431,8 | 16 | 34,9 | 98,000 |
| 12" | 558,8 | 66,7 | 381,0 | 488,9 | 20 | 34,9 | 125,000 |
| 14" | 603,2 | 69,8 | 412,7 | 527,0 | 20 | 38,1 | 151,000 |
| 16" | 685,8 | 76,2 | 469,9 | 603,2 | 20 | 41,3 | 215,000 |
| 18" | 742,9 | 82,5 | 533,4 | 654,0 | 20 | 44,4 | 287,000 |
| 20" | 812,8 | 88,9 | 584,2 | 723,9 | 24 | 44,4 | 366,000 |
| 22" | 869,9 | 95,2 | 641,2 | 777,9 | 24 | 47,6 | 437,000 |
| 24" | 939,8 | 101,6 | 692,1 | 838,2 | 24 | 50,8 | 532,000 |
Dimensional Tolerances of Blind Flange ASME B16.5 in India
| 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 mm 6.35 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 mm Eccentricity 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 |
Notes
1. Dimensions are in millimeters unless otherwise indicated.
2. The length of the stud bolt does not include the height of the chamfers (points).
Materials of Blind Flanges in India
Stainless Steel Blind Flanges in India
Alloy Steel Blind Flanges in India
Carbon Steel Blind Flanges in India
Duplex Steel Blind Flanges in India
Super Duplex Steel Blind Flanges in India
Nickel Alloy Blind Flanges in India
Blind Flange Industrial Application in India
- Industrial Boilers Industry
- Power Plants Industry
- Nuclear Plants Industry
- Oil & Gas Industry
- Refineries Industry
- Ship Building Industry
- Heat Exchanger Industry
- Condensers Industry
- Paper & Pulp Industry
- Marine Applications
- Nuclear Power Industry
- Fossil Fuel Power Plants Industry
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