DIPTI METAL INDUSTRIES
Blind Flange Standards & Material Grades (ASME, DIN, BS, JIS, GOST, UNI, IS) - Dipti Metal Industries: Global Supplier & Exporter
Dipti Metal Industries – Your Premier Worldwide Blind Flange Exporter, Global Supplier, Dealers, Distributors, and Stockists of High-Quality Blind Flanges adhering to an extensive range of international code standards including ASME/ANSI, DIN/EN, BS, JIS, GOST, UNI, and IS. We offer a comprehensive selection with various size ranges, pressure classes, face types, and a wide array of material grades for diverse industrial piping applications. We meticulously source from leading, certified manufacturers globally.
Introduction to Dipti Metal Industries' Blind Flange Code Standards & Material Expertise
Dipti Metal Industries proudly stands as a globally recognized and leading Blind Flange supplier, worldwide exporter, global dealer, distributor, and stockist of high-quality blind flanges. We meticulously source these critical piping components from trusted, certified manufacturers who adhere to a vast array of international code standards, ensuring compatibility, safety, and performance across diverse global industries.
Blind flanges are essential for terminating pipe ends, valves, or vessel openings, providing a secure and leak-proof seal. They are vital for pressure testing, future pipeline extensions, or simply isolating sections of a system. Our comprehensive understanding of worldwide standards—including ASME/ANSI from the USA, DIN/EN from Europe, BS from Britain, JIS from Japan, GOST from Russia, UNI from Italy, and IS from India—allows us to supply the exact blind flange required for any project, meeting specific size, pressure class, face type, and material requirements. Our unwavering commitment to stringent quality control ensures that every blind flange we supply meets precise dimensional and material specifications, providing robust and durable solutions for demanding industrial piping applications worldwide.
Blind Flange Code Standards (Worldwide Equivalents)
Dipti Metal Industries supplies Blind Flanges compliant with a wide range of international and national codes. The table below outlines the key standards, their common designations, size ranges, pressure classes, and face types.
| Standard | Code / Designation | Size Range | Pressure Class / PN | Face Types |
|---|---|---|---|---|
| ASME / ANSI (USA) | BLRF / BLRTJ (per ASME B16.5, B16.47 Series A/B) | ½″ – 24″ (B16.5), 26″ – 60″ (B16.47) | Class 150, 300, 600, 900, 1500, 2500 | RF, RTJ, FF, T&G, M&F |
| DIN / EN (Germany / Europe) | Blind Flange = DIN 2527 (EN 1092-1: Type 05) | DN 10 – DN 2000 | PN 6, 10, 16, 25, 40, 63, 100, 160 | RF (Type B), FF (Type A), Tongue & Groove, RTJ |
| BS (British Standard) | BS 4504 / BS 1560 Blind Flanges | ½″ – 40″ | PN 2.5, 6, 10, 16, 25, 40, 64, 100 | RF, FF |
| JIS (Japan) | Blind Flanges = JIS B2220 | 10A – 1500A | 5K, 10K, 16K, 20K, 30K, 40K | FF, RF |
| GOST (Russia) | Blind Flanges = GOST 12820-80, GOST 33259 | DN 10 – DN 1600 | PN 2.5, 6, 10, 16, 25, 40, 63, 100 | RF (raised sealing surface), FF |
| UNI (Italy) | Blind Flanges = UNI 2276 / UNI EN 1092-1 | DN 10 – DN 2000 | PN 6, 10, 16, 25, 40 | FF, RF |
| IS (India) | Blind Flanges per IS 1538, IS 6392 | 15 mm – 2000 mm | PN 6, 10, 16, 25 | FF, RF |
Notes:
- BLRF: Blind Raised Face
- BLRTJ: Blind Ring Type Joint
- FF: Flat Face
- PN (Pressure Nominal): Used in European standards (DIN/EN/UNI/IS/GOST).
- Class ratings (150–2500): Are used in ASME/ANSI standards.
- JIS: Uses K ratings (5K–40K).
Material Grades & International Equivalents (for Blind Flanges & Other Flanges)
Dipti Metal Industries offers flanges in a vast array of materials, ensuring compliance with global standards. This cross-reference table helps buyers easily map material specifications across different international codes.
| Material Category | ASTM / ASME | DIN / EN | BS (UK) | JIS (Japan) | GOST (Russia) | UNI (Italy) | IS (India) |
|---|---|---|---|---|---|---|---|
| Carbon Steel | A105 (Forged CS) | 1.0460 (C22.8) | 1503-161-430A | SF440A | 20 | Fe360B | IS 2002 / IS 2062 |
| Low Temp CS | A350 LF2 | 1.0566 (P355NL1) | 1503-216-400 LT | SF490A | 09G2S | Fe510 | IS 2002 LT |
| Cast CS | A216 WCB | 1.0619 (GS-C25) | 1504-161-430A | SC480 | 25L | Fe410 | IS 1030 |
| Stainless Steel 304 | A182 F304 / A240 304 | 1.4301 | 304S15 | SUS304 | 08X18H10 | X5CrNi18-10 | IS 6911 304 |
| Stainless Steel 304L | A182 F304L / A240 304L | 1.4306 | 304S11 | SUS304L | 03X18H11 | X2CrNi19-11 | IS 6911 304L |
| Stainless Steel 316 | A182 F316 / A240 316 | 1.4401 | 316S31 | SUS316 | 10X17H13M2T | X5CrNiMo17-12-2 | IS 6911 316 |
| Stainless Steel 316L | A182 F316L / A240 316L | 1.4404 | 316S11 | SUS316L | 03X17H14M3 | X2CrNiMo17-12-2 | IS 6911 316L |
| Stainless Steel 321 | A182 F321 / A240 321 | 1.4541 | 321S31 | SUS321 | 08X18H10T | X6CrNiTi18-10 | IS 6911 321 |
| Stainless Steel 347 | A182 F347 / A240 347 | 1.4550 | 347S31 | SUS347 | 08X18H12B | X6CrNiNb18-10 | IS 6911 347 |
| Duplex Steel | A182 F51 / UNS S31803 | 1.4462 (X2CrNiMoN22-5-3) | – | SUS329J3L | 08Х22Н5АМ2 | X2CrNiMoN22-5-3 | IS 6901 Duplex |
| Super Duplex | A182 F53 / F55 (S32750/S32760) | 1.4410 / 1.4501 | – | – | 07Х25Н6АМ3 | X2CrNiMoCuWN25-7-4 | IS – |
| Alloy Steel (Chrome-Moly) | A182 F11 (1¼Cr-½Mo) | 1.7335 (13CrMo4-5) | 621B | SCMV3 | 12Х1МФ | 13CrMo4-4 | IS 1570 11CrMo |
| A182 F22 (2¼Cr-1Mo) | 1.7380 (10CrMo9-10) | 622B | SCMV4 | 15Х1М1Ф | 10CrMo9-10 | IS 1570 22CrMo | |
| A182 F91 (9Cr-1Mo-V) | 1.4903 (X10CrMoVNb9-1) | – | G91 | 10Х9МФБ | X10CrMoVNb9-1 | IS – | |
| Nickel Alloys | Monel 400 (N04400) | 2.4360 | NA13 | NCu30 | МНЖМц28-2.5-1.5 | CuNi30Fe | IS 4574 Monel |
| Inconel 600 (N06600) | 2.4816 | NA14 | NCF600 | ХН78Т | NiCr15Fe | IS – | |
| Inconel 625 (N06625) | 2.4856 | – | NCF625 | ХН62ВМЮТ | NiCr22Mo9Nb | IS – | |
| Incoloy 825 (N08825) | 2.4858 | – | NCF825 | ХН70МБР | NiCr21Mo | IS – | |
| Hastelloy C276 (N10276) | 2.4819 | – | NW0276 | ХН65МВУ | NiMo16Cr15W | IS – | |
| Copper Alloys / Bronze | ASTM B62 Bronze | CC491K | BS 1400 LG2 | BC6 | БрО10Ф1 | CuSn5Zn5Pb5 | IS 318 Gr.LG2 |
| Titanium | ASTM B381 Gr.2 | 3.7035 | – | Ti Gr.2 | ВТ1-0 | TiGr.2 | IS 904 |
Notes:
- This table serves as a general guide for common material equivalents. Exact chemical compositions and mechanical properties may vary slightly between standards.
- Always refer to the specific material specification and manufacturer’s data sheet for precise details.
- Some standards may have multiple designations for similar materials.
Blind Flanges Export Countries & Cities We Supply From India To
Dipti Metal Industries is a proud Worldwide Exporter, Global Supplier, Dealer, and Stockist of Blind Flanges, with an extensive network. We ensure timely and compliant delivery to major industrial hubs across the globe.
All Export Countries & Cities
- Afghanistan: Kabul, Kandahar
- Algeria: Algiers, Oran
- Angola: Luanda, Huambo
- Argentina: Buenos Aires, Cordoba
- Australia: Sydney, Melbourne, Perth, Brisbane
- Austria: Vienna, Salzburg
- Bahrain: Manama, Sitra
- Bangladesh: Dhaka, Chittagong
- Belgium: Antwerp, Brussels, Ghent
- Bolivia: La Paz, Santa Cruz
- Brazil: São Paulo, Rio de Janeiro, Salvador
- Brunei: Bandar Seri Begawan
- Bulgaria: Sofia, Plovdiv
- Canada: Calgary, Edmonton, Vancouver, Toronto, Montreal
- Chile: Santiago, Valparaíso
- China: Shanghai, Guangzhou, Tianjin, Shenzhen
- Colombia: Bogota, Medellin
- Croatia: Zagreb, Split
- Czech Republic: Prague, Brno
- Denmark: Copenhagen, Aarhus
- Ecuador: Quito, Guayaquil
- Egypt: Cairo, Alexandria, Port Said
- Estonia: Tallinn, Tartu
- Fiji: Suva, Nadi
- Finland: Helsinki, Tampere
- France: Paris, Marseille, Lyon
- Germany: Frankfurt, Hamburg, Munich, Düsseldorf
- Ghana: Accra, Kumasi
- Greece: Athens, Thessaloniki
- Hong Kong: Hong Kong City
- Hungary: Budapest, Debrecen
- India: Mumbai, Delhi, Chennai, Kolkata, Bangalore, Hyderabad (Local Markets)
- Indonesia: Jakarta, Surabaya, Balikpapan
- Iran: Tehran, Mashhad
- Iraq: Baghdad, Basra
- Ireland: Dublin, Cork
- Italy: Milan, Rome, Genoa
- Japan: Tokyo, Osaka, Nagoya
- Jordan: Amman, Irbid
- Kazakhstan: Nur-Sultan, Almaty
- Kenya: Nairobi, Mombasa
- Kuwait: Kuwait City, Ahmadi
- Laos: Vientiane, Luang Prabang
- Latvia: Riga, Daugavpils
- Lebanon: Beirut, Tripoli
- Libya: Tripoli, Benghazi
- Lithuania: Vilnius, Kaunas
- Luxembourg: Luxembourg City
- Malaysia: Kuala Lumpur, Johor Bahru, Port Klang
- Mexico: Mexico City, Monterrey, Guadalajara
- Morocco: Casablanca, Rabat
- Mozambique: Maputo, Beira
- Myanmar: Yangon, Mandalay
- Nepal: Kathmandu, Biratnagar
- Netherlands: Rotterdam, Amsterdam, The Hague
- New Zealand: Auckland, Wellington, Christchurch
- Nigeria: Lagos, Port Harcourt, Abuja
- Norway: Oslo, Bergen
- Oman: Muscat, Sohar, Salalah
- Pakistan: Karachi, Lahore
- Panama: Panama City, Colón
- Papua New Guinea: Port Moresby, Lae
- Peru: Lima, Arequipa
- Philippines: Manila, Cebu
- Poland: Warsaw, Krakow
- Portugal: Lisbon, Porto
- Qatar: Doha, Ras Laffan
- Romania: Bucharest, Cluj-Napoca
- Russia: Moscow, Saint Petersburg, Kazan
- Rwanda: Kigali, Rubavu
- Saudi Arabia: Riyadh, Jeddah, Dammam, Al Khobar, Jubail
- Serbia: Belgrade, Novi Sad
- Singapore: Singapore City
- Slovakia: Bratislava, Košice
- Slovenia: Ljubljana, Maribor
- South Africa: Johannesburg, Durban, Cape Town, Sasolburg
- South Korea: Seoul, Busan, Ulsan
- Spain: Madrid, Barcelona, Valencia
- Sri Lanka: Colombo, Kandy
- Sweden: Stockholm, Gothenburg
- Switzerland: Zurich, Geneva, Basel
- Syria: Damascus, Aleppo
- Taiwan: Taipei, Kaohsiung
- Tanzania: Dar es Salaam, Mwanza
- Thailand: Bangkok, Rayong, Laem Chabang
- Trinidad & Tobago: Port of Spain, San Fernando
- Tunisia: Tunis, Sfax
- Turkey: Istanbul, Izmir, Ankara
- UAE: Dubai, Abu Dhabi, Sharjah, Ajman, Ras Al Khaimah
- Uganda: Kampala, Gulu
- Ukraine: Kyiv, Kharkiv, Odesa
- United Kingdom: London, Manchester, Aberdeen, Glasgow
- Uruguay: Montevideo
- USA: Houston, Los Angeles, New York, Chicago, New Orleans
- Uzbekistan: Tashkent, Samarkand
- Venezuela: Caracas, Maracaibo
- Vietnam: Ho Chi Minh City, Hanoi, Da Nang
- Yemen: Sana'a, Aden
Why Choose Dipti Metal Industries for Your Blind Flange Needs?
- Expertise in Global Standards: As a premier Global Blind Flange Supplier, Stockist, Dealer, and Exporter, Dipti Metal Industries possesses deep knowledge of worldwide code standards including ASME/ANSI, DIN/EN, BS, JIS, GOST, UNI, and IS. We ensure precise compliance for every order.
- Unrivaled Quality Assurance: We adhere to ISO 9001 certified processes for sourcing and supply. All blind flanges are meticulously procured from trusted, certified manufacturers who provide rigorous QA and full material traceability with EN 10204 3.1/3.2 MTCs, guaranteeing superior integrity and reliability.
- Extensive Product Range & Sourcing Capabilities: We maintain a comprehensive stock of blind flanges in a vast array of materials, size ranges (½″ to 60″ / DN 10 to DN 2000), pressure classes (Class 150-2500, PN 6-160, 5K-40K), and face types (RF, RTJ, FF). Our strong sourcing network allows us to meet almost any project specification.
- Global Network of Dealers & Distributors: With a robust worldwide presence and an extensive network of trusted Dealers, Distributors, and Stockists, Dipti Metal Industries ensures prompt availability, localized support, and efficient supply chains for our global clientele. We reliably reach major industrial hubs and remote project sites.
- Expert Technical Consultation: Decades of specialized flange expertise enables our seasoned technical team to provide unparalleled guidance on blind flange selection, material specifications, pressure ratings, face types, and compliance for your most critical piping projects.
- Robust Worldwide Export & Logistics: As a dedicated Worldwide Exporter, Dipti Metal Industries guarantees efficient and reliable global delivery with comprehensive documentation support, including customs clearance assistance. We ensure smooth logistics and timely project completion across all continents, handling international shipping with expertise.
- Competitive Pricing & Superior Value Proposition: Leveraging strategic global sourcing partnerships, streamlined operational processes, and optimized logistics, Dipti Metal Industries consistently delivers premium quality blind flanges at highly competitive prices, enhancing project cost-efficiency without compromising on critical performance, safety, and longevity in demanding industrial environments.
Get a Quote Today for Your Blind Flange Requirements!
Are you searching for dependable, high-performance Blind Flanges that comply with specific international code standards (ASME, DIN, BS, JIS, GOST, UNI, IS) for your critical piping applications, pressure testing, or system isolation needs? Contact Dipti Metal Industries, your expert global blind flange supplier, stockist, dealer, distributor, and exporter, today to discuss your specific requirements or to request a personalized, custom quote. Our knowledgeable and responsive team is dedicated to providing you with the most effective, safest, and most reliable blind flange solutions that guarantee long-term operational excellence, enhanced system integrity, and unparalleled project success in demanding industrial environments.
Price guidance (non-binding): USD 5.00–50,000.00 per unit depending on material, size, pressure class, face type, quantity, and delivery terms. Final prices are quotation-based.
Blind Flange Code Standards — Frequently Asked Questions
What is a blind flange and its primary purpose?
A blind flange is a solid disc with bolt holes, used to block off a pipeline, valve, or vessel opening. Its primary purpose is to seal the end of a pipe, providing a positive shut-off in a piping system, and allowing for future expansion or permanent closure. It is also used for testing the pressure of a pipeline or vessel.
Which international standards cover blind flanges?
Blind flanges are covered by various international standards, ensuring compatibility and safety across global industries. Key standards include ASME/ANSI (e.g., B16.5, B16.47) in the USA, DIN/EN (e.g., DIN 2527, EN 1092-1 Type 05) in Europe, BS (e.g., BS 4504, BS 1560) in Britain, JIS B2220 in Japan, GOST (e.g., 12820-80, 33259) in Russia, UNI 2276 in Italy, and IS (e.g., 1538, 6392) in India. These standards define dimensions, pressure ratings, materials, and facing types.
How are pressure classes designated for blind flanges across different standards?
Pressure class designations for blind flanges vary by standard. ASME/ANSI standards use 'Class' ratings (e.g., Class 150, 300, 600, 900, 1500, 2500). European and associated standards like DIN, EN, UNI, IS, and GOST use 'PN' (Pressure Nominal) ratings (e.g., PN 6, 10, 16, 25, 40, 63, 100, 160). Japanese Industrial Standards (JIS) use 'K' ratings (e.g., 5K, 10K, 16K, 20K, 30K, 40K). It's crucial to match the pressure class to the application's operating requirements and the corresponding standard.
What are the common face types for blind flanges?
Common face types for blind flanges include: Raised Face (RF), which is the most common and has a raised gasket surface; Flat Face (FF), used when a full gasket contact surface is required, often with cast iron flanges; Ring Type Joint (RTJ), used for high-pressure, high-temperature applications with a metal ring gasket; and less common types like Tongue & Groove (T&G) and Male & Female (M&F), which require matching flanges for leak-proof connections. The choice of face type depends on the specific application's pressure, temperature, and fluid characteristics.
What Our Customers Say
“The blind flange code chart provided here is extremely useful. It clearly explains how to specify ASME B16.5 and B16.47 blind flanges, with size, class, and material. We use it as a quick reference when preparing purchase orders.”
— John Peterson – Pipeline Engineer, USA Oil & Gas Sector, Houston, USA
“We often deal with DIN PN standards in Europe, and this page helped us compare with ASME and BS equivalents easily. Very helpful for global sourcing, though I’d love to see downloadable PDFs too.”
— Claudia Meyer – Procurement Specialist, German Chemical Industry, Frankfurt, Germany
“Blind flange coding can be confusing, but this guide breaks it down in simple steps. The examples of BLRF and BLRTJ codes matched our client’s specifications perfectly. Saves time in tender documentation.”
— Ravi Sharma – Project Contractor, Indian EPC Sector, Mumbai, India
“We frequently import flanges from multiple standards (ASME, JIS, GOST). This side-by-side code comparison is very practical. The inclusion of face types (RF, RTJ, FF) is especially good for high-pressure services.”
— Ahmed Al Mansoori – Procurement Officer, UAE Petrochemical Sector, Abu Dhabi, UAE
“The blind flange coding examples with size, class, and materials are well structured. It helped our team align JIS and ASME requirements for LNG ship components. Very clear and technically sound.”
— Kim Soo Hyun – Shipbuilding Engineer, South Korean Shipbuilding Industry, Busan, South Korea
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