Ct20 Gost Flange

Ct 20 is known as a low-carbon, non-alloy structural steel accoriding to Gost standard,used widely in the production of pipes, fittings, machinery parts, and pressure vessels. It is also called St 20, It’s known for its good ductility, weldability, and machinability, making it ideal for both mechanical and pipeline applications.

Gost Flange Standards:

GOST 12820-80 – Flat flanges (plain)

GOST 12821-80 – Weld neck flanges

GOST 12822-80 – Loose flanges

GOST 12815-80 – General flange connection requirements