GOST 33259-15 Flange
Size range: DN 10–DN 1600
Pressure rating: PN 1.0–PN 25.0 MPa
Carbon steel: 20, 09G2S, Q235B, Q345B, ASTM A105
Stainless steel: AISI 321/08Х18Н10Т/12Х18Н10Т, AISI 304/08Х18Н10, AISI 304L /03Х18Н11, AISI 316/08Х17Н13М2, AISI 316L/03Х17Н14М2, AISI 310S/20Х23Н18
GOST 33259-2015 Flanges
Reliable Flange Solutions for Industrial Piping Systems
Wuxi Well Steel manufactures and supplies steel flanges according to GOST 33259-2015, a widely recognized standard for flanges used in valves, fittings, pipelines, equipment and pressure systems. The standard defines flange design, dimensions, sealing surface types, manufacturing requirements, marking and quality control procedures.
Our GOST 33259-2015 flanges are designed to ensure secure, leak-proof and durable connections in demanding industrial applications. They are widely used in the oil & gas industry, petrochemical plants, power generation, water treatment systems and general pipeline construction.
Product advantages:
- Manufactured according to GOST 33259-2015 requirements
- Suitable for pressure ratings up to PN 250
- Available in various types and sealing surface designs
- Produced from high-quality carbon steel, stainless steel and alloy steel
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Strict quality control and dimensional inspection
Types of GOST 33259-2015 flanges available:
- Weld Neck Flanges (WN)
- Slip-On Flanges (SO)
- Blind Flanges (BL)
- Threaded Flanges
- Flat and Raised Face Flanges












