NF EN 448

District heating pipes - Bonded single pipe systems for directly buried hot water networks - Factory made fitting assemblies of steel service pipes, polyurethane thermal insulation and a casing of polyethylene

Le présent document concerne les raccords de service en acier avec isolation en mousse rigide de polyuréthane et tube de protection en polyéthylène. Il définit les exigences de conception et les méthodes d'essai applicables aux raccords et couvre les éléments de raccordement suivants : les coudes, les tés, les réductions, les compensateurs à usage unique et les pièces d'ancrage.

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