GOST 33259 06Х28МДТ AISI 904L flange Manufacturer
We area trusted manufacturer and exporter of GOST 33259 AISI 904L Flanges, offering corrosion-resistant and high-performance solutions for chemical, marine, and offshore industries.
These flanges are manufactured in accordance with GOST 33259, which defines the dimensions and pressure ratings for steel pipe flanges used in Russian and CIS-standard pipelines.
Made from AISI 904L stainless steel (UNS N08904), our flanges provide exceptional resistance to sulfuric acid, chloride corrosion, and seawater environments, making them ideal for chemical process and desalination applications.
GOST 33259 is a Russian standard which specified the dimensions, tolerances, and technical requirements for steel pipe flanges.
GOST 33259 flanges manufactured from 06Х28МДТ stainless steel (the Russian equivalent of AISI 904L) offer superior performance in highly corrosive environments. These flanges are commonly used in chemical processing, marine applications, and offshore piping systems
06Х28МДТ is a gost standard material which is the equivalent with AISI 904L,
| Марка : | 06ХН28МДТ ( другое обозначение 0Х23Н28М3Д3Т ЭИ943 ) |
| Заменитель: | 03ХН28МДТ |
06ХН28МДТ Chemical Compostion accoding to ГОСТ 5632 – 72
| Fe | C | Si | Mn | Ni | S | P | Cr | Mo | Ti | Cu |
| 36.885 – 46.5 | до 0.06 | до 0.8 | до 0.8 | 26 – 29 | до 0.02 | до 0.035 | 22 – 25 | 2.5 – 3 | 0.5 – 0.9 | 2.5 – 3.5 |
Mechanical properties 06KHN28MDT ( 06ХН28МДТ )
| Assortment | Dimension | Direct. | sв | sT | d5 | y | KCU | Heat treatment |
| – | mm | – | MPa | MPa | % | % | kJ / m2 | – |
| Pipe cooling strain, GOST 9941-81 | 490 | 30 | ||||||
| Forging, GOST 25054-81 | 510 | 216 | 30-36 | 30-40 | ||||
| Blank for pipe | 540 | 245 | 35 | 50 | 980 | Guenching 1050 – 1080oC, water, |
GOST 33259 06Х28МДТ AISI 904L flange specification
Flange Standard: GOST 33259-2015 (Replaces GOST 12820)
Flange Types: Weld neck, slip-on, blind
Pressure Ratings: PN 2.5 to PN 63
Sizes: DN15–DN1000+
Facing Types: RF, FF, MF, TG (Raised Face, Flat Face, etc.)
Material Advantages
- Excellent resistance to sulfuric acid, chloride pitting, and intergranular corrosion
- High nickel (24–26%) and molybdenum (4–5%) content
- Strong performance in high humidity and saltwater environments
GOST 33259 SS904L Weld Neck Flange Order Example
Product: GOST 33259 PN16 Weld Neck Flange
Material: AISI 904L / UNS N08904
Size: DN100
Facing: Raised Face (RF)
Quantity: 50 pcs
Standard: GOST 33259
Certification: EN 10204 3.1 + NACE MR0175
Related Products
- ASTM A182 F904L Flange
- GOST 33259 PN16 Blind Flange
