Rached Flanges is a reputable manufacturer and supplier of GOST 12820-80 Flanges, proudly based in Tunis, Tunisia. The company focuses on crafting flanges that meet Russian GOST standards, guaranteeing precise dimensions, consistent quality, and dependable performance. With state-of-the-art manufacturing facilities and rigorous quality control measures, Rached Flanges provides robust flange solutions that cater to a variety of industrial piping needs. Their dedication to technical excellence, timely delivery, and customer satisfaction has established Rached Flanges as a reliable source for GOST 12820-80 Flanges in both local and international markets.
GOST 12820-80 Flanges are usually made from carbon steel, alloy steel, or stainless steel, as outlined by the standard. The chemical makeup typically includes controlled levels of carbon, manganese, silicon, and trace elements to ensure strength and good weldability. On the mechanical side, these flanges deliver adequate tensile and yield strength, decent elongation, and resistance to internal pressure. They are engineered to perform reliably under moderate pressure and temperature conditions, ensuring they maintain their shape, structural integrity, and longevity.
| Standard | GOST / ГОСТ 12820-80 |
| Size | 1/2″ to 48″ |
| UNI | 6Bar 16Bar 10Bar 25Bar 40Bar |
| Class | 300 LBS, 150 LBS, 900 LBS, 600 LBS, 1500 LBS, 2500 LBS |
| EN | 6Bar 25Bar 10Bar 40Bar 16Bar |
| Flanges Face Type Provided By Manufacturer | RF (Raised Face), RTJ (Ring Type Joint) |
| BS | BS4504 , BS4504, BS1560, BS10 |
| Value Added Services | CNC Machining, Customised Flanges |
| Outer diameters | 1/2” to 24” |
| Making Methods Provided By Manufacturer | Casting And Forging Rolling And Cutting |
| JIS | 5K, 16 K 10 K, 20 K, 40 K, 30 K, 63 K |
| Flanges Test | Hydrostatic testing machine/ UI trasonic flaw detector/ X-ray detector/ Direct-reading Spectrograph/ Magnetic particle detector |
| Coating/Surface Treatment By Manufacturer | Antirust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized |
| Flanges Equipment | Pushing Machine/ electric bevelling machine/ Press machine/ Bending machine/ Sand-blasting machine etc |
| Standards Provided By Manufacturer | BS4504, BS 10, API7S-15, JISB2220, BS1560-3.1, ANSI/ASME B16.5/16.36/16.47A/16.47B, EN1092, DIN, API7S-43, API605, B16.48, ISO70051, MSS S44 |
Rached Flanges a leading supplier in Tunis, Tunisia, offers an extensive selection of GOST 12820-80 Flanges, including weld neck flanges, slip-on flanges, blind flanges, threaded flanges, and lap joint flanges. Designed for diverse industrial applications, our high-quality inventory and commitment to exceptional service make us a trusted choice for flange products in the region.
GOST 12820-80 Flanges find extensive use in industrial piping systems where standardized, flat welded flange connections are essential. You’ll often see them in oil and gas pipelines, petrochemical plants, chemical processing units, power generation facilities, and water supply systems. These flanges are designed to connect pipes, valves, pumps, and equipment that operate under standard pressure conditions. Their straightforward design makes installation, maintenance, and interchangeability a breeze, making them ideal for industrial infrastructure projects that need to comply with GOST standards and ensure reliability.
| Pressure PN = 0.6 MPa (6 kgf/s m²) | |||||||
| Designation | D, mm | D1, mm | dv, mm | b, mm | d, mm | answer, pcs. | Mass, kg. |
| Flat flange GOST 12820-80 (01) 1-15-6 st.3 (20) | 80 | 55 | 19 | 10 | 11 | 4 | 0,33 |
| Flat flange GOST 12820-80 (01) 1-20-6 st.3 (20) | 90 | 65 | 26 | 12 | 0,53 | ||
| Flat flange GOST 12820-80 (01) 1-25-6 st.3 (20) | 100 | 75 | 33 | 12 | 0,64 | ||
| Flat flange GOST 12820-80 (01) 1-32-6 st.3 (20) | 120 | 90 | 39 | 13 | 14 | 1,01 | |
| Flat flange GOST 12820-80 (01) 1-40-6 st.3 (20) | 130 | 100 | 46 | 13 | 1,21 | ||
| Flat flange GOST 12820-80 (01) 1-50-6 st.3 (20) | 140 | 110 | 59 | 13 | 1,33 | ||
| Flat flange GOST 12820-80 (01) 1-65-6 st.3 (20) | 160 | 130 | 78 | 13 | 1,63 | ||
| Flat flange GOST 12820-80 (01) 1-80-6 st.3 (20) | 185 | 150 | 91 | 15 | 18 | 2,44 | |
| Flat flange GOST 12820-80 (01) 1-100-6 st.3 (20) | 205 | 170 | 110 | 15 | 2,85 | ||
| Flat flange GOST 12820-80 (01) 1-125-6 st.3 (20) | 235 | 200 | 135 | 17 | 8 | 3,88 | |
| Flat flange GOST 12820-80 (01) 1-150-6 st.3 (20) | 260 | 225 | 161 | 17 | 4,39 | ||
| Flat flange GOST 12820-80 (01) 1-200-6 st.3 (20) | 315 | 280 | 222 | 19 | 5,89 | ||
| Flat flange GOST 12820-80 (01) 1-250-6 st.3 (20) | 370 | 335 | 273 | 20 | 12 | 7,67 | |
| Flat flange GOST 12820-80 (01) 1-300-6 st.3 (20) | 435 | 395 | 325 | 20 | 22 | 10,28 | |
| Flat flange GOST 12820-80 (01) 1-350-6 st.3 (20) | 485 | 445 | 377 | 22 | 12,58 | ||
| Flat flange GOST 12820-80 (01) 1-400-6 st.3 (20) | 535 | 495 | 426 | 24 | 16 | 15,2 | |
| Flat flange GOST 12820-80 (01) 1-500-6 st.3 (20) | 640 | 600 | 530 | 25 | 19,72 | ||
| Flat flange GOST 12820-80 (01) 1-600-6 st.3 (20) | 755 | 705 | 630 | 25 | 26 | 20 | 26,24 |
| Flat flange GOST 12820-80 (01) 1-800-6 st.3 (20) | 975 | 920 | 820 | 27 | 30 | 24 | 46,14 |
| Flat flange GOST 12820-80 (01) 1-1000-6 st.3 (20) | 1 175 | 1 120 | 1 020 | 31 | 28 | 64,36 | |
| Flat flange GOST 12820-80 (01) 1-1200-6 st.3 (20) | 1 400 | 1 340 | 1 220 | 34 | 33 | 32 | 99,03 |
Yes, we offer custom sizes for GOST 12820-80 Flanges to meet specific project needs. Our team at Rached Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@rachedflanges.com
We are renowned for delivering products with precise, accurate dimensions. Each product undergoes thorough testing, both destructive and non-destructive, to ensure quality before being shipped to our customers.
Our team is ready to assist you. Contact us for any queries or personalized solutions.
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