Quality forge and Fitting is a leading manufacturer,
Supplier and Exporter of Flanges and Fitting

Blind (BLRF) Flanges

Manufacturer, supplier, and exporter in India

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Author: Quality Forge & Fitting | Updated on: 1 June 2021

Are you looking for the finest quality Blind (BLRF) Flanges manufacturer and suppliers?

Get Quality products at Low price and Quick Dispatch and Delivery Available from Quality Forge & Fitting warehouse. Topmost Quality Carbon Steel Flanges, Carbon Steel Flanges, Mild Steel Flanges and Flanges manufacturers in India.

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Quality Forge & Fitting is a highly acclaimed manufacturer, supplier, and exporter of all types of stainless steel flanges, carbon steel flanges, Monel Flanges Nickel Flanges, Inconel Flanges, Hastelloy Flanges, Copper Flanges, Brass Flanges, Bronze Flanges, Titanium Flanges, Tantalum Flanges, Bismuth Flanges, Aluminium Flanges, High Speed Steel Flanges, Zinc Flanges, and Lead Flanges. Quality Forge & Fitting is one of the leading manufacturer, supplier, and exporter of types of flanges like Welding Neck Flanges (WNRF), Blind Flanges (BLRF), Slip On Flanges (SORF), Socket Weld Flanges (SWRF), Lap Joint Flanges, Screwed/ Threaded Flanges, Spectacle Blind Flanges, Spades and Ring Spacers, Square Flanges, Orifice Flanges, Ring Type Joint Flanges (RTJ), Plate Flanges, Reducing Flanges, ANSI/ ASME B16.5 Flanges, BS 10 Flanges, DIN Flanges, EN 1092-1 Flanges, and JIS Flanges.

Table of Contents

Description of Blind (BLRF) Flanges

Blind (BLRF) Flanges are used to block off a section of pipe or a nozzle on a vessel that has not been used. A nozzle typically is a pipe that comes out of a vessel and is flanged so it could be connected to either valves or piping. Numerous nozzles can be blanked off with the help of Blind (BLRF) flanges. Blind (BLRF) flanges to standard other pipe flanges can be either raised face (RF) or flat faced (FF). Blind (BLRF) flanges are used for pressure tests in plants.

Need more detailed product information before ordering?  If you’re ready to order or would like to talk with one of our materials experts, for more specific questions regarding our products, please Contact Us at +91 9833 359 757 or send enquiry through the Enquiry Form.

Specifications Of Blind (BLRF) Flanges

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″ (1200 NB)
Class
150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.
DIN
DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636,DIN2637, DIN2638, DIN2673
BS
BS4504 , BS4504, BS1560, BS10
Flange Face Type
Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

Material & Grades of Blind Flanges

Stainless Steel Blind Flanges
ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904L
Duplex & Super Duplex Steel Blind Flanges
ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61
Carbon Steel Blind Flange
ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F706
Low Temperature Carbon Steel Blind Flanges
ASTM A350, LF2, LF3
Alloy Steel Blind Flanges
ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91
Copper Alloy Steel Blind Flanges
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 Flanges
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 (BLRF) Flanges Price List

Blind On (BLRF) Flanges Types Blind On (BLRF) Flange Price in India Blind On (BLRF) Flange Price in USD
Stainless Steel Blind On (BLRF) Flanges INR 300 to 450 * / Kg USD $ 10.45* /Kg
Alloy steel Blind On (BLRF) flanges INR 300 to 350 */ Kg USD $ 55.36* /Kg
Carbon steel Blind On (BLRF) flanges INR 100 to 125 */ Kg USD $ 65.89 */Kg
ASME b16.47 Blind On (BLRF) flanges INR 90 to 100 */ Kg USD $ 75.56* /Kg
ANSI b16 5 Blind On (BLRF) flanges INR 90 to 120*/ Kg USD $ 65.56* /Kg

*Prices shown above are provisional prices and may change due to different market conditions. The market prices for materials have become very volatile in recent months. As a result, we cannot provide exact online pricing for these items, for latest prices please Contact Us at Contact Us at +91 9833 359 757 or send enquiry through the Enquiry Form to get the final price within hours. 

Quality Forge & Fitting one of the most competitive suppliers of Flanges pipe fittings products from India and our prices for are very competitive. Please request the updated price list and ready stock information along with your requirement. Quality Forge & Fitting maintains a stock of all standard items and can export them at the best price.

Blind Flange Weight Chart / Blind Flange Weight 150#

 Flange Weights by Pressure Class and Size
Pipe Size 150 # 300 # 600 # 900 # 1500 # 2500 #
WN SO BLD WN SO BLD WN SO BLD WN SO BLD WN SO BLD WN SO BLD
1/2″ 2 1 1 2 1 1 2 2 2 SEE 1500 # WEIGHTS 5 4 4 7 7 7
3/4″ 2 2 2 3 3 3 4 3 3 SEE 1500 # WEIGHTS 6 5 6 8 8 8
1″ 3 2 2 4 3 3 4 4 4 SEE 1500 # WEIGHTS 9 8 8 12 11 11
1 1/2″ 4 3 3 7 6 6 8 7 8 SEE 1500 # WEIGHTS 13 12 13 25 22 23
2″ 6 5 5 9 7 8 12 9 10 SEE 1500 # WEIGHTS 25 25 25 42 37 39
2 1/2″ 8 7 7 12 10 12 18 13 15 SEE 1500 # WEIGHTS 36 36 35 52 55 56
3″ 10 8 9 15 13 16 23 16 20 31 26 29 48 48 48 94 83 86
4″ 15 13 17 25 22 27 42 37 41 53 53 54 73 73 73 145 125 130
5″ 19 15 20 32 28 35 68 63 68 86 83 87 130 130 140 245 210 225
6″ 24 19 26 42 39 50 81 80 86 110 110 115 165 165 160 380 325 345
8″ 39 30 45 67 58 81 120 115 140 175 170 200 275 260 300 580 485 530
10″ 52 43 70 91 81 124 190 170 230 260 245 290 455 435 510 1075 930 1025
12″ 80 64 110 140 115 185 225 200 295 325 325 415 690 580 690 1525 1100 1300
14″ 110 90 140 180 165 250 280 230 355 400 400 520 940 NA 975 NA NA NA
16″ 140 98 180 250 190 295 390 330 495 495 425 600 1250 NA 1300 NA NA NA
18″ 150 130 220 320 250 395 475 400 630 680 600 850 1625 NA 1750 NA NA NA
20″ 180 165 285 400 315 505 590 510 810 830 730 1075 2050 NA 2225 NA NA NA
22″ 225 185 355 465 370 640 720 590 1000 NA NA NA NA NA NA NA NA NA
24″ 260 220 430 580 475 790 830 730 1250 1500 1400 2025 3325 NA 3625 NA NA NA

Blind Flange Dimensions 150 | 30 150# Blind Flange Dimensions

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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
Conversion Data
• 1 inch = 25.44 mm • 1 mm = 0.03937 inches • 1 lb/ft^2 = 47.88 Pa • 1 psi = 6.8948 Pa • x°F = (5/9)(x-32)°C
• 1 pound = 0.45359 Kg • 1 Kg = 2.20462 pounds • 1 Pa = 0.020885 lb/ft^2 • 1 Pa = 0.00014504 psi • x°C = (9/5)x + 32°F

Blind Flange Pressure Ratings

Pressure-Temperature Ratings for ASTM Group 2-1.1 Materials
Working pressure by Classes, BAR
Temp
-29 °C
150 300 400 600 900 1500 2500
38 19.6 51.1 68.1 102.1 153.2 255.3 425.5
50 19.2 50.1 66.8 100.2 150.4 250.6 417.7
100 17.7 46.6 62.1 93.2 139.8 233 388.3
150 15.8 45.1 60.1 90.2 135.2 225.4 375.6
200 13.8 43.8 58.4 87.6 131.4 219 365
250 12.1 41.9 55.9 83.9 125.8 209.7 349.5
300 10.2 39.8 53.1 79.6 119.5 199.1 331.8
325 9.3 38.7 51.6 77.4 116.1 193.6 322.6
350 8.4 37.6 50.1 75.1 112.7 187.8 313
375 7.4 36.4 48.5 72.7 109.1 181.8 303.1
400 6.5 34.7 46.3 69.4 104.2 173.6 289.3
425 5.5 28.8 38.4 57.5 86.3 143.8 239.7
450 4.6 23 30.7 46 69 115 191.7
475 3.7 17.4 23.2 34.9 52.3 87.2 145.3
500 2.8 11.8 15.7 23.5 35.3 58.8 97.9
538 1.4 5.9 7.9 11.8 17.7 29.5 49.2
Temp
°C
150 300 400 600 900 1500 2500

Blind (BLRF) Flanges Applications

Quality Forge & Fitting are engaged in manufacturing of robust quality ofBlind (BLRF) Flanges widely used in the following industries:

 

● Pharmaceutical Equipment● Food Industries
● Chemical Equipment● Manufacturing Industries
● Sea Water Equipment● Nuclear Power Plant
● Heat Exchangers● Oil & Gas Industries
● Condensers● Agriculture Industries
● Pulp and Paper Industry● Construction Industries / Building Systems
● Mining Industries● Ship Building Industries
● Water Industries● Energy Industries
● Cement Industries● Sugar Industries
● Transport Industries- Rail and Road● Off-Shore Oil Drilling Companies
● Automotive Industries● Power Generation
● Petro-Chemical Industries● Gas Processing
 ● Specialty Chemicals

Why Quality Forge & Fitting?

Quality Forge & Fitting is a leading stockist, distributor, and supplier of Flanges from India. We understand and understand the steel industry deeply and supplying to all major industries across the world. We supply flanges and Forged Fitting products and have experience in the field for more than 14 years. We have an in-house, fully modernized manufacturing unit producing customizable products that are 100 % durable and fully certified. We use the latest machinery and the latest technology to fabricate these Forged pipe fittings products. Our products are preferred by our clients due to their unique features including durability, reliability, easy operation, reasonable price, dimensional accuracy, high-end finishing, etc. We regularly supply these pipe fittings to many leading industrial units comprising petrochemicals plants, chemical, fertilizers, refineries, paper mills, cement plants, sugar mills, fabrication units etc. Our team of dedicated experts with stringent quality policy who carry quality check at every stage of production ensures that we supply best-in-class products meeting and exceeding our client’s expectations. Quality Forge & Fitting specialities that makes us a profitable business partner for our clients are:
  • Modern Infrastructure with huge storage capacity.
  • Stringent quality control policies and highly experienced team.
  • Distributors of all reputed origins and manufacturers.
  • Vast inventory of products with standard sizes and grades.
  • Strong logistics & delivery channels.
  • Superior quality products with timely deliveries
  • Confirmed execution of small as well as large consignment orders
Quality Forge & Fitting is committed to providing complete customer satisfaction when it comes to the performance, quality, timely delivery and the prices of our products. Customization facility is also provided as per the clients’ requirements as we keep upgrading our products according to the latest market trends. We fulfil each and every customer requirement irrespective of the size of the order. Our clients have been doing business with us for years, indicating higher levels of customer satisfaction. We always welcome any types of enquiries, queries and suggestions from our clients to improve our products and services to serve them better.
Shipping Policy : Our sales team will notify your delivery schedules when quoting you. Delivery time and delivery dates are based on the quantities and what types of products are ordered. Please check with our sales department when placing any orders as on exceptional occasions the delivery schedule may change. Orders may take up to 5-10 business days in transit. If products are out of stock, orders may take up to 2-4 weeks to ship. Quality Forge & Fitting will inform the buyer if this situation occurs.
Marking and Packing : All products are marked with lot no, size, grade, degree and our trademark. Products are packed to confirm that there is no damage during transit. We assure timely delivery of the product but subject to the availability of the stock. Additionally, to ensure safer shipping products are packaged in Wooden crates/pallets/boxes, Shrink-wrapped and Carton boxes. In case of export orders, standard export packaging is done in wooden cases and on special requests from clients, we can make custom marking on products.
Documentations : Documentation is offered on buyer’s request for assurance of quality of product supplying only-
  • Commercial invoice
  • Fumigation certification
  • Heat treatment chart
  • Quality assurance plan
  • Packaging list
  • Raw material test report
  • Material traceability report
Test Certificates: Manufacturer Test Certificate as per EN 10204 / 3.1B, 100% Radiography Test Report, Raw Materials Certificate, Third Party Inspection Report.

Blind (BLRF) Flanges manufacturers, suppliers, and export destinations

Quality Forge & Fitting already supplying to these countries:
ASIAMIDDLE EASTNORTH AMERICASOUTH AMERICAEUROPEAFRICA
 Bangladesh Azerbaijan USA Argentina Albania Algeria
 Cambodia Bahrain Bahamas Bolivia Austria Angola
 India Cyprus Canada Brazil Belgium Egypt
 Indonesia Iran Costa Rica Chile Croatia Equatorial Guinea
 Japan Iraq Denmark Colombia Czech Republic Ethiopia
 Kazakhstan Israel Jamaica Ecuador Finland Gabon
 Malaysia Jordan Mexico Guyana France Ghana
 Maldives Kuwait Morocco Paraguay Germany Kenya
 Myanmar Oman Panama Peru Greece Libya
 Philippines Qatar Puerto Rico Uruguay Hungary Madagascar
 Singapore Saudi Arabia Trinidad And Tobago Venezuela Ireland Mozambique
 South Korea Syria   Italy Namibia
 Sri Lanka Turkey   Malta Nigeria
 Taiwan UAE   Netherland South Africa
 Thailand Yemen   Norway Sudan
 Vietnam    Portugal The Republic of Congo
     Russia Uganda
     Slovakia 
     Slovenia 
     Spain 
     Switzerland 
     Ukraine 
     United Kingdom 
Quality forge & fitting already supplying to these Indian cities:
 Chennai  Kerala  Hyderabad
 Pune  Mumbai  Surat
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