LAP JOINT FLANGE GOST 12822-80
Standard: GOST 12822-80
Material: Carbon steel, Low-alloy steel, Stainless steel.
Nominal Bore (DN): 10 - 2000 mm.
Nominal Pressure (PN): 0.1 - 20.0 MPa.
Temperature Range: -70°C - +300°C.
Working Medium: Hot and cold water, oil, gas, air, sewage products, acids, gases, etc.
A lap joint flange is a pipeline component designed to connect elements of a pipeline system, such as pipes, tanks, or fittings. Its distinctive feature lies in its construction: the flange is mounted on the stub end or weld ring of the pipe, allowing it to remain movable relative to the connected elements. This design facilitates easy assembly and disassembly of the pipeline.
Materials:
- Carbon Steel: Steel 20, 09G2S.
- Stainless Steel: 12X18H10T, 10X17H13M2T, 06XH28MDT.
- Other Steels: A105, AISI 304, AISI 316, AISI 321.
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.
