FLAT FLANGE GOST 12820-80
Standard: GOST 12820-80
Material: Carbon steel, Low-alloy steel, Stainless steel.
Nominal Bore (DN): 10 - 2000 mm.
Nominal Pressure (PN): 0.1 - 2.5 MPa.
Temperature Range: -70°C - +300°C.
Working Medium: Hot and cold water, oil, gas, air, sewage products, acids, gases, etc.
Flat weld-on steel flanges are reliable and durable components designed to ensure the tightness and strength of connections in pipeline systems under various working conditions. They are widely used in industries such as petrochemicals, energy, water supply, and gas distribution.
Materials:
- Carbon Steel: Steel 20, 09G2S.
- Stainless Steel: 12X18H10T, 08X18H10T, 10X17H13M2T, 06XH28MDT.
- Other Steels: A105, A182, A350, AISI 304, AISI 304L, AISI 316, AISI 316L, AISI 316Ti, AISI 321, etc.
Flanges are produced with various sealing surface designs:
- Type 1: With a connecting protrusion.
- Type 2: With a raised face.
- Type 3: With a recess.
- Type 4: With a spigot.
- Type 5: With a groove.
- Type 6: For a lens gasket.
- Type 7: For an oval gasket.
- Types 8 and 9: With a spigot and groove for a fluoroplastic gasket.
