Quan Flanges and Plates is a reputable manufacturer and supplier based in Da Nang, Vietnam, specializing in high-quality GOST 33259 Flanges that meet both Russian and international standards. These flanges are crafted with precision engineering to ensure secure, leak-proof connections in piping systems that operate under high pressure and temperature. Renowned for their dimensional accuracy, durability, and resistance to corrosion, GOST 33259 Flanges are in high demand across industries that require dependable performance. At Quan Flanges and Plates, every product goes through rigorous quality checks, making them ideal for applications in oil and gas, petrochemical, power generation, and marine sectors.
Typically, GOST 33259 Flanges are made from premium-grade carbon steel, stainless steel, alloy steel, and duplex steel, which guarantees exceptional strength and resilience. This careful selection of materials enhances their corrosion resistance, hardness, and long-lasting performance even in harsh environments. They boast impressive mechanical properties, including high tensile and yield strength, excellent toughness, and resistance to cracking, deformation, and wear. Designed to withstand extreme conditions, these flanges maintain tight seals and structural integrity. With precise machining and sturdy construction, GOST 33259 Flanges offer reliability and durability for demanding industrial applications.
| Standard | GOST / ГОСТ 33259 |
| 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 |
Quan Flanges a leading supplier in Da Nang, Vietnam, offers an extensive selection of GOST 12821-80 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.
These flanges find extensive use in pipelines, power plants, oil refineries, chemical processing facilities, and offshore industries. They create strong, reliable connections in systems that transport gases, steam, or corrosive fluids, ensuring both safety and efficiency. Their versatility makes them perfect for high-pressure and high-temperature environments, while their straightforward installation and maintenance enhance operational convenience. Additionally, GOST 33259 Flanges are well-suited for shipbuilding, water treatment plants, and various infrastructure projects. With their robust design, excellent sealing capabilities, and ability to endure severe conditions, these flanges are a top choice for many industrial applications.
| Diameter conditional (DN), millimeter | O.D. Of (D), millimeter | Diameter of spacing (D0), millimeter | Diameter internal (dB), millimeter | Flange wall thickness (b), millimeter | fastener Size (d0), millimeter | mounting holes Number (n), pcs | Weight of one flange, kilogram |
| 15 | 80/95 | 55/65 | nineteen | 10/10 | 11/14 | 4/4 | 0.3 / 0.5 |
| 20 | 90/105 | 65/76 | nineteen | 12/12 | 11/14 | 4/4 | 0.5 / 0.7 |
| 25 | 100/115 | 75/85 | nineteen | 12/12 | 11/14 | 4/4 | 0.6 / 0.9 |
| 32 | 120/135 | 90/100 | 39 | 13/14 | 14/18 | 4/4 | 1.1 / 1.4 |
| 40 | 130/145 | 100/110 | 46 | 13/15 | 14/18 | 4/4 | 1.2 / 2 |
| 50 | 140/160 | 110/125 | 59 | 13/15 | 14/18 | 4/4 | 1.3 / 2.1 |
| 65 | 160/180 | 130/145 | 78 | 13/17 | 14/18 | 4/4 | 1.6 / 2.8 |
| 80 | 180/195 | 150/160 | 91 | 15/17 | 18/18 | 4/4 | 2.4 / 3.2 |
| 100 | 205/215 | 170/180 | 110 | 15/19 | 18/18 | 4/8 | 2.8 / 4 |
| 125 | 235/245 | 200/210 | 135 | 17/21 | 18/18 | 8/8 | 3.8 / 5.4 |
| 150 | 260/280 | 225/240 | 161 | 17/21 | 18/22 | 8/8 | 4.4 / 6.6 |
| 200 | 315/335 | 280/295 | 222 | 19/21 | 18/22 | 8/8 | 5.9 / 8 |
| 250 | 370/390 | 335/350 | 273 | 20/23 | 18/22 | 12/12 | 7.6 / 10 |
| 300 | 435/440 | 395/400 | 325 | 20/24 | 22/22 | 12/12 | 10.2 / 13 |
| 350 | 485/500 | 445/460 | 377 | 22/24 | 22/22 | 12/16 | 12.6 / 16 |
| 400 | 535/565 | 495/515 | 426 | 24/26 | 22/26 | 16/16 | 15.2 / 21 |
| 500 | 640/670 | 600/620 | 530 | 25/28 | 22/26 | 16/20 | 19/28 |
| 600 | 755/780 | 705/725 | 630 | 25/31 | 26/30 | 20/20 | 26/40 |
| 800 | 975/1010 | 920/950 | 820 | 27/37 | 30/33 | 24/24 | 46/79 |
| 1000 | 1175/1220 | 1120/1160 | 1020 | 31/43 | 30/33 | 28/28 | 64/118 |
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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