PED Certified Blind Flanges, Trusted Manufacturer and Supplier of BLRF Flange, BLFF Flange, EN 1092-2 PN16 Blind Flange, Covering All Types with Precise Dimensions, International Standards and Multiple Pressure Classes
A Blind Flange is a solid disk used to block off a pipeline or create a stop. It is commonly used in piping systems when the pipeline needs to be closed for maintenance or future expansion. Unlike other flanges, blind flanges do not have a bore and are ideal for high-pressure applications. Bhavani Industries, a trusted name in the piping industry, is a leading manufacturer and supplier of blind flanges across India and global markets.
Blind flanges are available in various pressure classes, typically ranging from Class 150, 300, 600, 900, 1500 to 2500 as per ANSI/ASME standards. The dimensions vary based on pipe size and pressure rating, conforming to international standards such as ASME B16.5, DIN, and BS standards. Bhavani Industries offers blind flanges in sizes from ½” to 48”, customized to meet specific client requirements with precision engineering and strict quality control.
At Bhavani Industries, blind flanges are manufactured using high-quality materials such as carbon steel, stainless steel, alloy steel, and duplex steel, ensuring durability and resistance to corrosion. The company uses advanced CNC machinery and testing equipment to produce flanges that meet both domestic and international standards. Each flange is thoroughly inspected to ensure dimensional accuracy and pressure sustainability.
Blind flanges are widely used in industries such as oil & gas, petrochemicals, water treatment, power generation, and shipbuilding. They are essential in pipelines where flow needs to be isolated or shut off. Bhavani Industries has built a strong reputation for delivering reliable blind flange solutions that perform under extreme conditions, making them a preferred supplier among engineering firms and EPC contractors.
Get ISO Certified BLRF Flange Manufacturers & Class 300 Blind Flange, Series A and Series B Blind Flange, ANSI B16.5 Class 150, Class 300, Class 600, Class 900, Class 1500, Class 2500 Blind Flanges Manufacturer in India
Technical Index
Blind Pipe Flange Standard Specifications
| Product Name | Blind Flanges | BLFF Flange | BLRF Flange |
|---|---|
| Flange Size Availability | ½” (15 NB) to 48” (1200 NB) |
| Flange Pressure Ratings | Class 150, 300, 600, 900, 1500, 2500, PN6, PN10, PN16, PN25, PN40, PN64 |
| Applicable Flange Standards | ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, GOST, MSS SP-44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605 |
| Flange Facing Types | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ), Lap Joint, Male & Female (M&F), Tongue & Groove (T&G) |
| Custom Fabrication | Manufactured as per AS, BS, ANSI, DIN, JIS standards | Custom designs available | Equal and Reducing Configurations |
| Material Test Certifications | EN 10204 3.1 & EN 10204 3.2 | Compliance with NACE MR0175, NACE MR0103 |
| Testing & Inspection Reports | 100% Radiography Test Report, EN 10204/3.1B, Raw Material Certification, Third-Party Inspection Reports |
| Testing Procedures | Hydrostatic Testing, Direct-Reading Spectrograph, Ultrasonic Flaw Detection, X-ray Examination, Magnetic Particle Inspection |
| Manufacturing Equipment | Hydraulic Press Machines, Induction Heating, Bending Machines, Sand-Blasting Units, CNC Machining, Beveling Machines |
| Flange Coating Options | Anti-Rust Paint, Black Oil Paint, Yellow Transparent Coating, Zinc Plating, Hot-Dip & Cold-Dip Galvanization |
| Material Sourcing Regions | India, USA, Japan, West Europe, South Korea |
| Global Export Markets | UAE, Jordan, Bahrain, Kuwait, Oman, Qatar, Saudi Arabia, USA, Singapore, Malaysia, Azerbaijan, Armenia, Georgia, Egypt, Nigeria, South Africa, Kenya, Morocco, Ethiopia, Ghana, Tanzania, Sudan, Uganda, Angola |
Blind Flat Face Flange Standards
| ANSI/ASME B16.47 Flanges | ANSI/ASME B16.36 Flanges | ANSI/ASME B16.5 Flanges | Pr. EN1902-1 Flanges |
| DIN Flanges | JIS Flanges | BS 4504 Flanges | BS 10 Flanges |
| MSS SP-44 Flanges | JIS B2220 Flanges | KS B1503 Flanges | UNI Flanges |
| SABS/SANS 1123 Flanges | AS 2129, AS 4087 Flanges | ISO 9624, ISO 7005-1 Flanges | AWWA Flanges Standard |
| GOST Standard Flanges | API Flanges | AS/ANZ 4331.1 Flanges | Series A Flange |
| Series B Flange | SAE J518 Flanges | GB Flange | Norwegian Standard Flanges |
BLRF Flange Material Grades and Standards
| Stainless Steel Blind Flanges | ASTM/ASME A/SA182: F304, F304L, F316, F316L | ASTM/ASME A/SA351: CF3, CF3M, CF8, CF8M | DIN: 1.4306, 1.4301, 1.4404, 1.4401, 1.4408, 1.4308, 1.4409 |
|---|---|
| Duplex Steel Blind Flanges | ASTM A182: S31803 / S32205 | Grades: F51, F52, F53, F54, F55, F57, F59, F60, F61 |
| Super Duplex Steel Blind Flanges | ASTM A182: S32750 / S32760 | Grades: F51, F52, F53, F54, F55, F57, F59, F60, F61 |
| Copper Nickel Blind Flanges | ASTM/ASME SB 61 / 62 / 151 / 152 | UNS: C70600 (90/10), C71500 (70/30), C71640 |
| Titanium Blind Flanges | ASTM B381 / ASME SB381: Gr.1, Gr.2, Gr.4, Gr.5, Gr.7 | UNS: R50250 (Gr.1), R50400 (Gr.2), R50550 (Gr.3), R50700 (Gr.4), R52400 (Gr.7), R53400 (Gr.12), R56320 (Gr.9), R56400 (Gr.5) |
| Copper Blind Flanges | Grades: TP1, TP2, C10100 – C12300, TU1, TU2, C12500, C14200, C14500 – C14530, C17200, C19200, C21000, C23000, C26000, C27000, C28000, C33000, C37000, C44300 – C44500, C60800, C63020, C68700, C70400, C70600, C71500, C71640 |
| Incoloy Blind Flanges | ASTM B564 / ASME SB564: Incoloy 800, 800H, 800HT (UNS N08800), 825 (UNS N08825), 925 |
| Inconel Blind Flanges | ASTM B564 / ASME SB564: Inconel 600, 601, 625, 718, 783, 690, X750 |
| Nickel Alloy Blind Flanges | ASTM B564 / ASME SB564: Nickel 200, Nickel 201, Nickel 205, Nickel 205LC |
| Hastelloy Blind Flanges | ASTM B564 / ASME SB564: Hastelloy C276 (UNS N10276), C22 (UNS N06022), C4, C2000, B2, B3, X |
| Monel Blind Flanges | ASTM B564 / ASME SB564: Monel 400 (UNS N04400), Monel 500 (UNS N05500) |
| Carbon Steel Blind Flanges | ASTM/ASME A/SA105, A/SA105N, A/SA216-WCB | DIN: 1.0460, 1.0402, 1.0619 | ASTM A105N, ASTM A350 LF2, ASTM A694 (F52, F56, F60, F65, F70, F80) |
| Alloy Steel Blind Flanges | ASTM A182 / ASME SA182: F5, F9, F11, F12, F22, F91 |
| Alloy 20 Blind Flanges | ASTM B462 / ASME SB462: Carpenter® 20 Alloy, Alloy 20Cb-3 |
| SMO 254 Blind Flanges | ASTM A182 / ASME SA182: SMO 254/6Mo, UNS S31254, DIN 1.4547 |
| Aluminium Blind Flanges | Grades: 5052, 6061, 6063, 2017, 7075 |
| Brass Blind Flanges | Grades: 3602, 2604, H59, H62 |
| Other Specialty Blind Flanges | Materials: Tin Bronze, Aluminum Bronze, Lead Bronze, Nimonic 75, Nimonic 80A, Nimonic 90, AISI 4140, AISI 4130, Mild Steel, Al6XN |
ASME B16.5 Flanges Types
ANSI B16.5 BLFF Flange Industries & Applications
Class 150 Blind Flange Dimensions
| 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 |
Class 300 Blind Flange Dimensions
| 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 |
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
| 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 |
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 |
Major Blind Pipe Flanges Export Countries
United Arab Emirates (UAE), Jordan, Bahrain, Kuwait, Oman, Qatar, Saudi Arabia, United States of America (USA), Singapore, Malaysia, Azerbaijan, Armenia, Georgia, Egypt, Algeria, Nigeria, South Africa, Kenya, Morocco, Ethiopia, Ghana, Tanzania, Sudan, Uganda, Angola.