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DIN EN 1759-1:2005-02

Действует
Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, Class designated - Part 1: Steel flanges, NPS 1/2 to 24; German version EN 1759-1:2004 — 78 стр.
ICS
23.040.60 Flanges, couplings and joints / Фланцы, муфты и соединения