Heat insulation on steel pipes and joint couplings of pipelines
Heat-insulated pipes are intended for the construction of oil pipelines, gas pipelines, oil product pipelines and process pipelines with the temperature of the transported product up to + 90 ° C, and are also designed for underground laying of heating networks with operating temperatures up to + 140 ° C. The thickness of heat- insulation is calculated taking into account the temperature regime of the pipeline operation.
Heat-insulated pipes and joint couplings of pipelines are manufactured in the form of “pipe-in-pipe” construction in which a monolithic rigid polyurethane foam is used as the heat-insulated, and as a waterproofing coating is used a polyethylene jacket tube, a metal-encased shell for an underground laying or a galvanized steel tube for an overhead oil and gas pipelines. It’s possible to install a heating system based on the “SKIN effect” and fireproof inserts.
- Effective conservation of energy and heat;
- High strength;
- Protection against damage;
- Large operating temperature range.
From 57 to 1220 mm
Pipes in a polyethylene coating can be of two types: type 1 - standard, type 2 - reinforced. As a protective shell for thermal insulation of pipes, polyethylene sheath pipes and casings made of thin-sheet galvanized steel with a sealed joint (external and internal) are used. To increase the durability of the galvanized steeled shell, it is allowed to apply an additional coating (paint, polymer, etc.) on its outer surface, which can be periodically renewed during the operation. In accordance with the requirements of GOST 30732-2006, heat-insulated pipes must be made with conductors-indicators of the operational remote monitoring system (ODK), but it’s allowed to perform without them in the presence of design reasons or at the request of the Customer.