GOST R 71798
GOST R 71798 (Pipes of austenitic chromium-nickel stainless steel, welded by electric fusion welding, for high temperature service and general applications. Specification)· GOST (Russia) · 79 materiali
GOST R 71798 (Pipes of austenitic chromium-nickel stainless steel, welded by electric fusion welding, for high temperature service and general applications. Specification)· GOST (Russia) · 79 materiali