BS 1640-4:1968

Заменен

Specification for steel butt-welding pipe fittings for the petroleum industry, Wrought and cast austenitic chromium-nickel steel fittings. Metric units — 20 стр.

Описание Изменения Ссылки Версии

Ссылочные документы

BS EN 10253-3:2008

Действует

Butt-welding pipe fittings. Wrought austenitic and austenitic-ferritic (duplex) stainless steels without specific inspection requirements — 50 стр.

BS EN 10253-4:2008

Действует

Butt-welding pipe fittings. Wrought austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection requirements — 100 стр.