Spectacle Blind Flanges Manufacturers in India

  • Spectacle blinds are available in standard sizes up to 24 inches and in forged material grades like ASTM A105 (high-temperature carbon), A350 low-temperature carbon) and various ASTM A182 grades (alloy, stainless steel, duplex). Click on the link to learn about the chemical and mechanical properties and the selection criteria of these common spectacle blind grades.

  • Spectacle Flanges Available Size 1/2″NB TO 48″NB 

  • Standard of Spectacle Flanges ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48

Spectacle Blind Flanges Suppliers – Top Quality Spectacle Blind Flanges Manufacturers in India!

  • Asiamet is a leading manufacturer, suppliers in India. A spectacle blind or spec blind abbreviated as SB is a safety device used to isolate a section of line or piece of equipment when the line or equipment needs to be inspected or removed from service. It is different than a valve in that the blind is a permanent or long term isolation device.
  • A spectacle blind is machined from a single piece of metal that is cut to match the pipe size, fit between two pipe flanges and requires an additional gasket when it is installed. Also the bolts will need to be lengthened depending on what piping class and size blind is used. The thickness of the spectacle blind is specified based on the line pressure and pipe size.
  • Generally it is mounted in the “Open” position so that flow through the pipe is possible. If it is placed in the “close” position and if it is rotated, then the pipe is blanked off and no flow is feasible. The whole idea of a spectacle blind is to ensure that an item of equipment is properly and securely blanked off with no leakage or no flow through a valve during maintenance.
  • The whole idea of a spectacle blind is so that one can be absolutely sure that an item of equipment is properly and securely blanked off with no possibility of any flow or leakage through a valve during maintenance. The flow can be diverted to other items of equipment but not just bypassed around the blank as this would compromise the safety function of the spectacle blind. The flow has to valve off and pressure relieved prior to loosening flange bolts and swinging the blind.
Product Spectacle Blind Flanges
Size ½” (15 NB) to 48″
DIN DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS ASA 150#, 2.0MPa, 5.0MPa, 10.0MPa, 15.0MPa, 25.0MPa, 42.0MPa
Packing Bundled Packing, Loose
Price Terms Ex-Works, FOB, CIF, CFR, CNF
Latest Price Call +919619672006
Email sales@asiametsteel.com
Spectacle Blind Flange Suppliers, Dealers
  • Do you want to know how much does a spectacle blind flanges cost? Do you want to know where you can get the best price and quality steel flanges in India?

  • We are ready to provide you our quality products, fast delivery service, and custom cut flanges sizes. Send us your detailed inquiry to us, our professional staff will get back to you with our best solution and costs.

  • The experts here in this company are aimed to provide the best quality of flanges as per the requirement and demand of customers.

What is a Spectacle Blind Flanges?

Spectacle and line blind flanges are similar to a blind flange but different because they fit between two flanges. Spectacle blind gets their name from similarity to pair or eye glasses. Once side of Spectacle Blind Flange is fully closed for complete flow shuts off, whereas the other end is open for full flow. In this setup the blinds can be rotated without having to take the system apart. It also gives visual confirmation if the line is open or close.

A Spectacle Blinds is a safety device used to isolate a section of line or piece of equipment when the line or equipment needs to be inspected or removed from service. It is different than a valve in that the blind is a permanent or long term isolation device.

Specification of Spectacle Blind Flanges

Type Spectacle Blind Flange
Size ½” (15 NB) to 48″ (1200NB)
Standard ANSI B16.5, ANSI B16.47, ANSI B16.36, ANSI B16.48, BS 4504, EN1092, UNI 2277/2278, DIN, JIS, SABS1123, GOST-12820
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
In Form SORF, WNRF, BLRF, SWRF, LAP Joint, Threaded, Reducing, Spectacle, etc
Specialize As per drawing
Coating/Surface Treatment Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized
Connection Type Ring Type Joint, Lap-Joint Face, Raised Face, Flat Face, Large Male-Female, Small Male-Female, Large
Tongue & Groove, Small Tongue & Groove
Flange Face Type Flat Face (FF), Raise Face (RF), Ring Joint (RJT)
Dimensions ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
Packing No Fumigate or Fumigate Plywood/Wood Pallet or Case
Usage Oil Field, Offshore, Water System, Shipbuilding, Natural Gas, Electric Power, Pipe Projects et

Grade of Spectacle Blind Flanges

  1. Monel Grade: Monel 400, Monel K500, Monel R-405
  2. Nickel Grade: Nickel 200, Nickel 201
  3. Inconel Grade: Inconel 600, Inconel 601, Inconel 625, Inconel 718
  4. Incoloy Grade: Incoloy 800, Inconel 800H, 800HT
  5. Hastalloy Grade: Hastalloy B2, Hastalloy B3, Hastalloy C22, Hastalloy C276, Hastalloy X
  6. Titanium Grade: Gr1, Gr2, Gr3, Gr5, Gr7, Gr11
  7. Stainless Steel Grade: ASTM A182 F202, F304/304L/304H, F316/316L, F316H, F316TI, F310, F321, F904L
  8. Carbon Steel Grade: ASTM A105/A105N, A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, A694 F42, F46, F48, F50, F52, F56, F60, F65, F70, A516.60, 65, 70 (Spectacle Blind Flange, Spacer Ring/Spade Flange), Steel RST37.2, C22.8
  9. Duplex Steel Grade: ASTM / ASME A/SA 182 UNS F44, F45, F51, F53, F55, F60, F61
  10. Alloy Steel Grade : ASTM A182 F1, F5, F9, F11, F22, F91

Spectacle Blind Types

  • Flat face spectacle blind (FF): similar to a flat face flange the surface of the disc is flat suited for flat face gaskets for low pressure application.
  • Raised face spectacle blind (RF): likewise raised face flanges there is an additional thickness on the surface of the disc. This type fits semi metallic gaskets as the spiral wound type.
  • Ring joint face spectacle blind (RTJ): a groove is inscribed on the surface of the disc. This type is used in conjunction with ring joint gaskets

Advantages of Spectacle Blind Flanges

  1. Spectacle flanges require no welding for installation
  2. Asiamet will manufacture spectacle flanges to your specifications
  3. Spectacle flanges from Houston’s Asiamet have a wide range of pressure tolerances

Application of Spectacle Blind Flanges

  1. Oil & Gas and Paper
  2. Sugar and Oil Mills
  3. Ports and Railway
  4. Offshore and Defense
  5. Breweries and Cement
  6. Refineries and Fertilizers
  7. Mining and Construction
  8. Chemical and Petrochemical
  9. Shipbuilding and Steel Plant
  10. Power Plant and Nuclear Power
  11. Engineering Co. & and Government Org

Types of Spectacle Blind Flanges

Stainless Steel Spectacle Blind Flange Class 150 ASME B16.5 Slip on Threaded Flange
SS Spectacle Blind Flange Class 300 Carbon Steel Spectacle Blind Flange With 1/2 Npt
Class 1500 Spectacle Blind Flange Alloy Steel Spectacle Blind Flange With Threaded Hole
Class 600 Spectacle Blind Flange Hastelloy Spectacle Blind Flange Weight 150#
Inconel 625 Spectacle Blind Flange Class 900 Rtj 1500 Spectacle Blind Flange
Monel 400 Spectacle Blind Flange Class 2500 Stainless Steel 316 Spectacle Blind Flange Ring Type Joint
Hastelloy C276 PN16 Spectacle Blind Flange Monel K500 Spectacle Blind Flange Flat Face Wholesaler
SS 304 Spectacle Blind Flange Importers Nickel 200 Spectacle Blind Flange Slip On
Nickel 201 Spectacle Blind Flange Pn40 Rtj 900 Spectacle Blind Flange Stockist in India
Stainless Steel 410 Spectacle Blind Flange Pn 160 Inconel 600 Spectacle Blind Flange Rtj
Incoloy 800 Spectacle Blind Flange Pn 64 ASTM A105 Spectacle Blind Flange Npt
ASTM A182 SS 304 Spectacle Blind Flange Dn150 Pn16 Duplex Steel Spectacle Blind Flange Jis 5k
Din 2527 Spectacle Blind Flange Exporters in Mumbai. Jis B2220 Spectacle Blind Flange
En 1092-1 Spectacle Blind Flange Jis 10k Spectacle Blind Flange Suppliers
Din 2633 Spectacle Blind Flange Manufacturers Kf Spectacle Blind Flange
Din 2576 Spectacle Blind Flange Distributors B16.47 Spectacle Blind Flanges
ASME B16.5 Class 300 Spectacle Blind Flange ANSI B16.5 150 Spectacle Blind Flange

Testing of Spectacle Blind Flanges 

  • Macro test
  • Micro test
  • Chemical test
  • Flaring test
  • It is like PMI test
  • IGC test and hardness test
  • Mechanical test and  flattening test

Documents We Provide with Spectacle Blind Flanges 

Documents like QAP Packaging list
NABL approved lab test report Guarantee letter
Raw material test report Material Traceability report
Commercial invoice to buyers The TC like MTC as per EN 10204/3.1B
Buyers report Third-party test report

FAQ’s regarding Spectacle Blind Flanges 

  1. Are you a trading company or a manufacturer?

We are a manufacturer of Spectacle Blind Flanges in India.

  1. What are you main products?

We manufacture all kinds of elbow, tees, caps, flanges and steel pipes etc. with different materials.

  1. Do you provide free samples?

Yes, we would provide sample on your request.

  1. Why should I choose Asiamet as our source for Spectacle Blind Flanges?

We offer best quality product at most competitive price in the industry. You are promised to obtain the best quality, price and service.

  1. How to ensure the quality?

Mill Test Certificate is provided for all material. If needed, we can also allow third party inspection or buyer’s inspection

  1. How long is your delivery time for Spectacle Blind Flanges?

Generally it is 5-10 days if the good are in stock. Or it is 15-20 days if the goods are not in stock, it is According to quality

We Export Spectacle Blind Flanges Across the Globe!

  • MIDDLE EAST: Saudi Arabia, Iran, Ira, Qatar, Bahrain, Oman, Kuwait, Turkey, Yemen, Syria, Jordan, Cyprus
  • AFRICA: Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan, Equatorial Guinea, the Republic Of Congo, Gabon
  • NORTH AMERICA: USA, Canada, Mexico, Panama, Costa Rica, Puerto Rica, Trinidad And Tobago, Jamaica, Bahamas, Denmark
  • EUROPE:Russia, Norway, Germany, France, Italy, UK, Spain, Ukraine, Netherlands, Belgium, Greece, Czech Republic, Portugal, Hungary Albania, Austria, Switzerland, Slovakia Finland, Ireland Croatia, Slovenia, Malta
  • ASIA: Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Myanmar, Taiwan, Cambodia
  • SOUTH AMERICA: Argentina, Bolivia, Brazil, Chile, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay

We Sell Spectacle Blind Flanges Across All Major Cities and Industrial Centers in India

Mumbai, Delhi, Bangalore, Hyderabad, Ahmadabad, Chennai, Bhilai, Kochi, Bhavnagar, Siliguri, Visakhapatnam, Jaipur, Ranchi, Kolkata, Pune, Jaipur, Surat, Lucknow, Chandigarh, Bhopal, Patna, Nagpur, Agra, Indore, Kanpur, Varanasi