- GOST 12820-80 Welded steel plate flanges, Pnominal from 0.1 to 2.5 MPa (from 1 to 25 kgf/cm2);
- GOST 12821-80 Welded steel flanges, Pnominal from 0.1 to 20.0 MPa (from 16 to 200 kgf/cm2);
- GOST 33259-2015 Flanges of fittings, connecting pieces and pipelines operating at pressures of up to PN 250.
Flanges
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