317L Round Bar

Spectacle Blind Flanges 304/304l


Spectacle Blind Raised Face Flange, Spectacle Blind Flat Face Flanges, Spectacle Blind Flanges 304, Spectacle Blind Pipe Flanges in Mumbai, ANSI B16.5 Spectacle Blind Flange Manufacturers in Mumbai, Spectacle Blind Flanges 304 Exporter, Spectacle Blind Flange Supplier in India.

Manufacturer of Spectacle Blind Forged Flanges, ASTM A182 SS Spectacle Blind Flange, Alloy Steel Spectacle Blind Plate Flanges, ASME B16.47 Series A and B Spectacle Blind Flanges, Nickel Alloy 200 Spectacle Blind Flange, Carbon Steel Spectacle Blind Flange, Spectacle Blind Flange Dimensions, MSS SP-44 Spectacle Blind Flanges in Mumbai, India.

Detailed Information:

With precision machining facilities, RatnaExports.com specializes in manufacturing and exporting 304/304L stainless steel spectacle blind flanges with precision machining capabilities. Following ANSI B16.5, DIN Standard, and EN1092-1, we produce 304/304L stainless steel spectacle blind flanges ranging from 1/2” to 60” NPS. In stainless steel, 304 is the most commonly used austenitic (nonmagnetic) steel. In addition to its 18 percent chromium to 8 percent nickel composition, this type of stainless steel has excellent forming and welding properties and strong corrosion resistance and strength. It is also referred to as “18/8” because of its composition. The materials we use for our flanges include carbon steel, stainless steel, high nickel alloys, duplex/super duplex, copper-nickel, titanium, and special alloys.

Blind flanges for spectacles can have designed with a raised or flat face. Spectacle Blind Flanges use in various industries such as Textile, Paper, Engineering, Dairy, Sugar, Cement, Petrochemical, Oil & Gas Power, Onshore & Offshore, Plumbing, Heating, Water Supply, Fabrication, Food Processing Industry, Structure Pipe, and many more.

There is a wide variety of exceptional circumstances that require the use of spectacle blind flanges, and one of their main advantages is the fact that they can be attached to the pipe without having to weld it. Spectacle Blind Flanges can also manufacture following a customer’s specific requirements. We also accept any Third Party of Inspection appointed by our customers, such as Lloyd’s Register, TUV, DNV, BV, SGS, IEI, SAI, etc.

Our goal at RatnaExports.com is to be an ISO-certified manufacturer, supplier, and exporter of Spectacle Blind Flanges 304. Two metal discs are joined with a section of metal to form the SS Spectacle Blind Flange, which resembles a pair of glasses. It has been speaking that these flanges are also known as the ‘figure 8’ flanges. When the pipeline is maintained, the primary function of the Monel Spectacle Blind Flange is to prevent any leaks that may occur. It is important to note that the ASME B16.5 Carbon Steel Spectacle Blind Flanges 304 are pressure-retaining plates used in high-pressure piping networks. Our ASME B16.5 Spectacle Blind Flanges 304 can easily open or close the flow from pipes. They use in applications that operate at subzero temperatures and are volatile and toxic.

Spectacle Blind Flanges 304 are manufactured and supplied by RatnaExports.com. A high-quality blind can come in many sizes, shapes, thicknesses, and so forth, all corrosion-resistant. Spectacle blinds have many advantages, such as magnetic properties, ease of welding, and good fabrication quality, among many others. However, at higher temperatures, it loses some of its toughness. Among the many advantages of our manufactured high-quality blinds is that they offer excellent corrosion resistance, can be formed by hot or cold working using traditional methods, and offer various other benefits.

Additionally, we provide our customers with a wide range of in-stock shapes of Spectacle Blind Flanges 304, all of which are of superior quality. These Spectacle Blinds can give some features: Non-magnetic, stronger corrosion resistance, Good resistance to sulphuric, phosphoric, and acetic acids, High resistance to crevice and stress corrosion cracking, Excellent formability and weldability, and many more. A combination of Nickel, Chromium, and Molybdenum metals use to make these Spectacle Blinds to provide efficient performance, dimensional accuracy, and durability. The Spectacle Blinds also have several mechanical and physical properties to make them durable. There are several mechanical properties, such as tensile strength, elongation, and proof stress. In contrast, there are material properties, such as density, modulus of elasticity, electrical resistivity, thermal conductivity, and thermal expansion.

Besides a quality control team in our organization, we also have a quality control team who can check the blinds’ quality at different stages of production and produce high-quality blinds for our esteemed clients. In manufacturing the product, we constantly consider production norms and standards and international product quality standards. 

Spectacle Blinds are manufactured by RatnaExports.com using high-quality raw materials with the help of our expert staff members. We always follow international and national specifications and standards when manufacturing these Spectacle Blinds. In addition, we do not compromise with the quality standard and continue to provide top-quality products to the market. We also offer these Spectacle Blinds at affordable prices and low maintenance costs. In addition to testing the finished products, RatnaExports.com also performs some non-destructive and destructive tests. We are responsible for checking the quality and strength of the blinds before dispatching them for delivery by packaging them with standard packaging materials and ensuring fast, seamless, and convenient delivery.

Spectacle Blind Flanges 304 Specification


Type : Spectacle Blind Flange 304
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


Spectacle Blind Flanges 304 Chemical Composition











SS 304

0.08 max

2 max

0.75 max

0.045 max

0.030 max

18 – 20

8 – 11

Spectacle Blind Flanges 304 Mechanical Properties


Melting Point

Tensile Strength

Yield Strength (0.2%Offset)


8.0 g/cm3

1400 °C (2550 °F)

Psi – 75000, MPa – 515

Psi – 30000, MPa – 205


Spectacle Blind Flanges 304 Standard

  • Stainless Steel JIS B2220 5K Spectacle Blind Flange
  • Stainless Steel 150 LBS Spectacle Blind Flanges
  • Stainless Steel ANSI B16.47 Series A Spectacle Blind Flanges
  • Stainless Steel DIN 2573 PN6 Spectacle Blind Flanges
  • Stainless Steel EN 1092-1 Type 01 Spectacle Blind Flanges
  • Stainless Steel GOST 12820-80 Spectacle Blind Flanges
  • Stainless Steel BS 10 Table D Spectacle Blind Flanges
  • Stainless Steel 600 LBS Spectacle Blind Flanges
  • Stainless Steel 900 LBS Spectacle Blind Flanges
  • Stainless Steel 1500 LBS Spectacle Blind Flanges



Spectacle Blind Flanges 304 Manufacturing Process

  • Raw Material
  • Testing
  • Cutting
  • Forging
  • Final Inspection
  • Drilling
  • Machining
  • Heat Treatment
  • Marking
  • Coating
  • packing
  • Dispatch ( Exports / Domestic )

Types Of Spectacle Blind Flanges

  •  Spectacle Blind Raised Face Flanges
  •  Large Selection of Spectacle Blind Flanges
  •  Spectacle Blind Flange PN 64
  •  Raised Face Flanges
  •  ASME B16.47 Series A and B  Spectacle Blind Flange
  •  Spectacle Blind Flanges Manufacturer
  •  SS Spectacle Blind Flanges
  •  Class 300 Spectacle Blind Flanges
  •  Spectacle Blind Flanges in Saudi Arabia
  •  Class 900 Spectacle Blind Flanges in Riyadh
  •  Spectacle Blind Flanges
  •  BS 10 Table E Spectacle Blind Flanges
  •  Spectacle Blind Flanges Exporter
  •  Spectacle Blind Flat Face Flanges
  •  Raised Face Spectacle Blind Flange
  •  Industrial Spectacle Blind Flanges
  •  Monel Spectacle Blind Flanges

Spectacle Blind Flanges 304 Packing & Delivery

Heavy-duty cranes use. There is no doubt that the final process of dispatching is the most tedious of all. As a result of our extensive delivery network, we can ensure time-critical deliveries at the request of our esteemed customers.

There is no doubt that all of our SS Spectacle Blind Flanges 304 pack in a seaworthy manner. Before they export to our customers, the packing methods usually include a wooden box and pallet. We ensure the packaging is seaworthy, strong, waterproof, and easy to load and unload.

Application Of Spectacle Blind Flanges 304

  • Oil & Gas
  • Chemical
  • Petrochemical
  •  Marine
  • Refinery
  • Power Plant


Countries We Export:

Afghanistan, Albania, Algeria, Andorra, Angola, Antigua-Barbuda Argentina, Armenia, Australia, Austria, Azerbaijan, Bahamas, Bahrain, Bangladesh, Barbados, Belarus, Belgium, Belize, Benin, Bhutan, Bolivia, Bosnia-Herzegovina, Botswana, Brazil, Brunei, Bulgaria, Burkina-Faso, Burundi, Côte d’Ivoire, Cabo Verde, Cambodia, Cameroon, Canada, Central African Republic, Chad, Chile, China, Colombia, Comoros, Congo (Congo-Brazzaville), Costa-Rica, Croatia, Cuba, Cyprus, Czechia (Czech Republic), Democratic Republic of the Congo, Denmark, Djibouti, Dominica, Dominican Republic, Ecuador, Egypt, El Salvador, Equatorial Guinea, Eritrea, Estonia, Eswatini (fmr. “Swaziland”), Ethiopia, Fiji, Finland, France, Gabon, Gambia, Georgia, Germany, Ghana, Greece, Grenada, Guatemala, Guinea, Guinea-Bissau, Guyana, Haiti, Holy See, Honduras, Hungary, Iceland, India, Indonesia, Iran, Iraq, Ireland, Israel, Italy, Jamaica, Japan, Jordan, Kazakhstan, Kenya, Kiribati, Kuwait, Kyrgyzstan, Laos, Latvia, Lebanon, Lesotho, Liberia, Libya, Liechtenstein, Lithuania, Luxembourg, Madagascar, Malawi, Malaysia, Maldives, Mali, Malta, Marshall Islands, Mauritania, Mauritius, Mexico, Micronesia, Moldova, Monaco, Mongolia, Montenegro, Morocco, Mozambique, Myanmar (formerly Burma), Namibia, Nauru, Nepal, Netherlands, New Zealand, Nicaragua, North Korea, North Macedonia, Norway, Oman, Pakistan, Palau, Palestine-State, Panama, Papua, New Guinea, Paraguay, Peru, Philippines, Poland, Portugal, Qatar, Romania, Russia, Rwanda, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Samoa, San Marino, Sao Tome and Principe, Saudi Arabia, Senegal, Serbia, Seychelles, Sierra Leone, Singapore, Slovakia, Slovenia, Solomon Islands, Somalia, South Africa, South Korea, South Sudan, Spain, Sri Lanka, Sudan, Suriname, Sweden, Switzerland, Syria, Tajikistan, Tanzania, Thailand, Timor-Leste, Togo, Tonga, Trinidad and Tobago, Tunisia, Turkey, Turkmenistan, Tuvalu, Uganda, Ukraine, United Arab Emirates, United Kingdom, United States of America, Uruguay, Uzbekistan, Vanuatu, Venezuela, Vietnam, Yemen, Zambia, Zimbabwe.

Cities We Supply:

London, New-York, Paris, Moscow, Tokyo, Dubai, Singapore, Barcelona, Los-Angeles, Madrid Rome, Chicago, Toronto, San-Francisco, Abu-Dhabi, St-Petersburg, Amsterdam, Berlin Prague, Washington,Istanbul, Las-Vegas, Doha, Seoul, Sydney, Beijing,  Miami, Munich, Milan, San-Diego, Bangkok, Vienna, Dublin, Vancouver, Boston,  Zurich,  Melbourne, Budapest, Houston, Seattle, Montreal, Hong-Kong, Frankfurt, Sao-Paulo, Tel-Aviv, Copenhagen, Calgary, Orlando, Atlanta, Dallas, Hamburg, Osaka, Lisbon, Austin, Phoenix Naples, Oslo, Denver, Stockholm, Riyadh, Delhi, Buenos Aires, San-Jose, Brussels, Portland Philadelphia, Ottawa, Helsinki, Valencia, Brisbane, Warsaw, Minneapolis, Shanghai, Lyon, Adelaide, Edmonton, Marseille, Muscat, Athens, Stuttgart, Rio-De-Janeii, Baltimore, Auckland, Cologne, New-Orlean, Kuwait-City,  Kiev, Hanover, Perth, Minsk, Bucharest, Nashville, Dusseldorf, Manchester, Sacramento, Glasgow, Mexico-City, Salt-Lake-Ci, Raleigh, Cracow