Preinsulated bonded pipe systems for underground hot water networks - Joint assembly for steel service pipes, polyurethane thermal insulation and outer casing of polyethylene
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 with joint casings and the thermal insulation with poured rigid PUR-foam.
This standard specifies methods for type tests of complete joints and PUR-foam for joints under laboratory conditions.
Field made T-branches, reducers, caps, etc. are excluded from this standard.