PU pipe coating equipment
Polyurethane pipe coating is used for pipeline applications that require abrasion resistance, thermal insulation or reduced heat loss. Bauhuis designs and supplies PU pipe coating equipment for both solid PU coatings and PU foam coatings.
Solid PU can be applied to the internal or external pipe surface as an alternative to 3-layer external coating or liquid epoxy in high-abrasion environments. PU foam is applied externally to improve insulation and help prevent hydrate formation in onshore and subsea gas pipelines.
Solid PU pipe coating equipment
Bauhuis supplies equipment for applying solid polyurethane coatings to rotating pipes or to pipes moving along a helical conveyor. The coating is applied with an airless spray system and requires a fast-curing PU material.
This allows the coated pipe to support its own weight shortly after application, helping to keep the production process controlled and efficient.
PU foam pipe coating equipment
PU foam coating is used when thermal insulation is required. Bauhuis offers different PU foam coating solutions, depending on the pipe specification, insulation requirements and production setup.
One method places the pipe inside a jacket with spacers. The pipe is positioned on a tilting table, after which foam is injected from the top to fill the space between the pipe and jacket.
Another method applies foam directly onto the rotating pipe. A polyethylene film from an extruder is then wrapped around the foam layer while the pipe moves along the conveyor.
Insulation for onshore and subsea pipelines
PU foam coatings help reduce heat loss and support stable flow conditions in gas pipelines. Thanks to low thermal conductivity, PU foam helps maintain fluid viscosity and reduce the risk of hydrate formation.
In most applications, PU foam is applied over an existing corrosion protection layer, such as FBE or liquid epoxy.
Leak detection and heat tracing options
When required by the project specification, Bauhuis can integrate equipment for heat tracing or leak detection wiresinto the PU foam coating process.
This helps align the coating system with the technical requirements of the pipeline project.
