NF EN 448 : 2015
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
DISTRICT HEATING PIPES - PREINSULATED BONDED PIPE SYSTEMS FOR DIRECTLY BURIED HOT WATER NETWORKS - FITTING ASSEMBLIES OF STEEL SERVICE PIPES, POLYURETHANE THERMAL INSULATION AND OUTER CASING OF POLYETHYLENE
09-30-2021
01-12-2013
La présente Norme européenne définit les exigences et les méthodes d'essai applicables aux raccords des systèmes préfabriqués de tubes isolés thermiquement pour les réseaux d'eau chaude enterrés directement, conformes à l'EN 253, comprenant des raccords de service en acier de DN 20 à DN 1200, une isolation en mousse rigide de polyuréthane et un tube de protection en polyéthylène. La présente Norme européenne couvre les raccords suivants: les coudes, les tés, les réductions, les compensateurs à usage unique et les pièces d'ancrage.
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