NEN-EN 489
Preinsulated bonded pipe systems for underground hot water networks - Joint assembly for steel service pipes, polyurethane thermal insulation and outer casing of polyethylene
| Organization: | NEN |
| Publication Date: | 1 November 1994 |
| Status: | inactive |
| Page Count: | 17 |
| ICS Code (Iron and steel pipes): | 23.040.10 |
| ICS Code (Flanges, couplings and joints): | 23.040.60 |
| ICS Code (Central heating systems): | 91.140.10 |
scope:
This standard specifies requirements for joints, made under field conditions, between adjacent preinsulated pipes and/or fittings in district heating networks. The standard covers jointing of steel service pipes by means of fusion welding, the connecting of casing pipe ends and the thermal insulation with rigid PUR-foam. This standard specifies methods for type test under laboratory conditions. Field made T-branches, reducers, caps etc are excluded from this standard.
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