GOST 12820-1980
Steel plane welded flanges for Pnom from 0,1 to 2,5 MPa (from 1to 25 kgf/sq sm). Design and dimensions

Standard No.

GOST 12820-1980

Release Date

1980

Published By

RU-GOST R

Status

Be replaced 2016-04

Replace By

GOST 33259-2015

Latest

GOST 33259-2015

Replace

GOST 1255-1967 GOST 9938-1962 GOST 12827-1967 GOST 12828-1967

Scope

This standard applies to steel flat welded flanges of pipelines and connecting parts, as well as to connections

GOST 12820-1980 Referenced Document

• GOST 12815-1980 Flanges for valves, fittings and pipelines for Pnom from 0,1 to 20 MPa (from 1 to 200kgf/sq sm). Types. Connecting dimensions and dimensions of sealing surfaces
• GOST 12816-1980 Flanges for valves, fittings and pipelines for Pnom from 0,1 to 20 MPa (from 1 to 200 kgf/sq sm). General technical requirements
• GOST 7505-1989 Steel stamping forgings. Tolerances, allowances and forging laps*， 1989-04-19 Update

GOST 12820-1980 history

• 2015 GOST 33259-2015 Flanges for valves, fittings and pipelines for pressure to PN 250. Design, dimensions and general technical requirements
• 1980 GOST 12820-1980 Steel plane welded flanges for Pnom from 0,1 to 2,5 MPa (from 1to 25 kgf/sq sm). Design and dimensions
• 0000 GOST 12828-1967
• 0000 GOST 9938-1962

GOST 12820-1980 Steel plane welded flanges for Pnom from 0,1 to 2,5 MPa (from 1to 25 kgf/sq sm). Design and dimensions has been changed from GOST 1255-1967 Steel flat welded flanges with a connecting ridge for Ru from 1 to 25 kgf/cm2. Design, dimensions and technical requirements.

GOST 12820-1980 Steel plane welded flanges for Pnom from 0,1 to 2,5 MPa (from 1to 25 kgf/sq sm). Design and dimensions was changed to GOST 33259-2015 Flanges for valves, fittings and pipelines for pressure to PN 250. Design, dimensions and general technical requirements.