МОНГОЛ УЛСЫН СТАНДАРТ
MNS EN 806-4 : 2021 2 EN 1092 (all parts), Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN designated EN 1111, Sanitary tapware — Thermostatic mixing valves (PN 10) — General technical specification EN 1254-1, Copper and copper alloys — Plumbing fittings — Part 1: Fittings with ends for capillary soldering or capillary brazing to copper tubes