1984GOST 20430-1984 Asbestos-cement corrugated sheets of middle profile and detailes for them
0000 GOST 20430-1975
GOST 20430-1984 Asbestos-cement corrugated sheets of middle profile and detailes for them was changed to GOST 30340-1995 Asbestos-cement corrugated sheets. Specifications.