Home > GOST / ГОСТ 12820-80 Flange
Based in Dubai, UAE, Jinay Metals is a top manufacturer and supplier of GOST / ГОСT 12820-80 Flanges, providing premium industrial flanges made to satisfy both Russian and international standards. With an emphasis on durability and precision engineering, our flanges are made from high-quality materials that can be used in a variety of oil, gas, petrochemical, and power industries. Jinay Metals is dedicated to providing dependable, performance-driven, corrosion-resistant solutions that satisfy customer requirements. For all GOST flange needs, we guarantee prompt delivery, affordable prices, and first-rate customer service as a reliable supplier in the area.
GOST 12820-80 flanges are flat welded steel flanges used for connecting pipelines, valves, and equipment. They are typically made from carbon steel (e.g., 20, 09G2S), stainless steel (e.g., 12X18H10T), or alloy steel, depending on operating conditions. The composition includes iron with carbon, manganese, silicon, chromium, and nickel for strength and corrosion resistance. Mechanical properties include tensile strength of 370–540 MPa, yield strength of 235–355 MPa, and elongation of at least 20%. These flanges ensure tight, reliable, and durable pipeline connections under pressure and temperature variations.
| Size: | 1/2″NB TO 24″NB IN |
| Class: | 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS DIN Standard ND-6,10, 16, 25, 40 Etc. |
| Materials: | Monel : Grade: Monel 400, Monel K500, Monel R-405 Nickel : Grade: Nickel 200, Nickel 201 Inconel : Grade: Inconel 600, Inconel 601, Inconel 625, Inconel 718 Incoloy : Grade: Incoloy 800, Inconel 800H, 800HT Hastalloy : Grade: Hastalloy B2, Hastalloy B3, Hastalloy C22, Hastalloy C276, Hastalloy X Titanium : Grade: Gr1, Gr2, Gr3, Gr5, Gr7, Gr11 Stainless Steel : Grade: ASTM A182 F202, F304/304L/304H, F316/316L, F316H, F316TI, F310, F321, F904L 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 Duplex Steel: Grade: ASTM / ASME A/SA 182 UNS F44, F45, F51, F53, F55, F60, F61 Alloy Steel: Grade : ASTM A182 F1, F5, F9, F11, F22, F91 |
| Value Added Service: | CNC Machine, Customized Flanges |
| Coating/Surface Treatment: | Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Choosing Blind Flanges from Jinay Metals ensures unmatched quality and long-lasting performance. These Flanges are engineered for superior corrosion resistance, strength, and precision, making them ideal for a wide range of industrial applications. With a strong focus on customer satisfaction, timely delivery, and technical expertise. Jinay Metals providing reliable and high-performance GOST / ГОСТ 12820-80 Flange tailored to meet your specific operational and project requirements.
| Nominal Bore GOST / ГОСТ 12820/12821-80 Flange | Dia. (D) | Thick. (E) | Dia. (B) | Dia. (A) | Height (H) | Nbr | Holes | Dia. (C) |
| 1/2″ | 90 | 11.2 | 30 | 22.9 | 16 | 4 | 15.87 | 60.3 |
| 3/4″ | 100 | 12.7 | 38 | 28.2 | 16 | 4 | 15.87 | 69.9 |
| 1″ | 110 | 14.3 | 49 | 34.9 | 17 | 4 | 15.87 | 79.4 |
| 1 1/4″ | 115 | 15.9 | 59 | 43.7 | 21 | 4 | 15.87 | 88.9 |
| 1 1/2″ | 125 | 17.5 | 65 | 50.0 | 22 | 4 | 15.87 | 98.4 |
| 2″ | 150 | 20.7 | 78 | 62.5 | 25 | 4 | 19.05 | 120.7 |
| 2 1/2″ | 180 | 22.3 | 90 | 75.4 | 29 | 4 | 19.05 | 139.7 |
| 3″ | 190 | 23.9 | 108 | 91.4 | 30 | 4 | 19.05 | 152.4 |
| 3 1/2″ | 215 | 23.9 | 122 | 104.1 | 32 | 8 | 19.05 | 177.8 |
| 4″ | 230 | 23.9 | 135 | 116.8 | 33 | 8 | 19.05 | 190.5 |
| 5″ | 255 | 23.9 | 164 | 144.4 | 36 | 8 | 22.22 | 215.9 |
| 6″ | 280 | 25.4 | 192 | 171.4 | 40 | 8 | 22.22 | 241.3 |
| 8″ | 345 | 28.6 | 246 | 222.2 | 44 | 8 | 22.22 | 298.5 |
| 10″ | 405 | 30.2 | 305 | 277.4 | 49 | 12 | 25.40 | 362.0 |
| 12″ | 485 | 31.8 | 365 | 328.2 | 56 | 12 | 25.40 | 431.8 |
| 14″ | 535 | 35.0 | 400 | 360.2 | 79 | 12 | 28.57 | 476.3 |
| 16″ | 595 | 36.6 | 457 | 411.2 | 87 | 16 | 28.57 | 539.8 |
| 18″ | 635 | 39.7 | 505 | 462.3 | 97 | 16 | 31.75 | 577.9 |
| 20″ | 700 | 42.9 | 559 | 514.4 | 103 | 20 | 31.75 | 635.0 |
| 24″ | 815 | 47.7 | 663 | 616.0 | 111 | 20 | 34.92 | 749.3 |
Jinay Metals, one of the leading suppliers of GOST / ГОСТ 12820-80 Flange in Dubai, UAE, offers a wide selection of high-quality flanges suitable for various industrial applications. With an extensive inventory, reliable sourcing, and a strong commitment to quality, service, and timely delivery, Jinay Metals has established itself as a trusted name for premium stainless steel products across the UAE.
Yes, we provide GOST / ГОСТ 12820-80 Flange to match your exact project requirements. At Jinay Metals, our team is dedicated to delivering tailored flanges solutions that ensure precision and reliability. For more information or personalized assistance, reach out to us at sales@jinaymetals.ae.
The Russian GOST system standardized GOST 12820-80 flanges, which are flat welding flanges that are frequently used in industrial systems and pipelines to join pipes, valves, and equipment. They are crucial to sectors like petrochemical, power generation, shipbuilding, water treatment, and oil and gas. These flanges offer a safe, impervious joint that can withstand elevated temperatures and pressures. Liquid, gas, and steam transport systems are examples of common applications. They are widely utilized in Russia, the CIS, and international projects that demand adherence to Russian engineering specifications because of their dependability and compatibility with GOST standards.
