BS EN 10253-4:2008

Действует

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

ICS

23.040.40 Metal fittings / Металлические фитинги

77.140.20 Stainless. Including alloyed steels, corrosion-resistant steels, heat-resisting steels, etc. / Высококачественные стали