Key parameters for flange fitting selection

2025-03-31

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Pressure rating: such as PN10, PN16, Class150, etc., must match the pipeline system pressure.
Seal face type:
Raised face (RF): versatile, suitable for flat gaskets.
Male and female face (M/F): better sealing, suitable for medium and high pressure.
Tongue and groove face (T/G): the tightest seal, suitable for high-pressure and highly toxic media.
Material:
Carbon steel (Q235, 20#): low cost, suitable for general media.
Stainless steel (304, 316): corrosion resistant, suitable for chemical and marine environments.
Alloy steel (16Mn, 15CrMo): high temperature and high pressure resistant, suitable for steam and hot oil pipelines.

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Flange fittings are crucial components in piping systems, used to connect pipes, valves, pumps, and other equipment.

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Flange fittings are crucial components in piping systems, used to connect pipes, valves, pumps, and other equipment.

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