Corrosion protection and joint sealing, in practice.
Standards, materials and field practice explained plainly. Articles are published in Finnish.
Covalence DualSeal RJS-E heat-shrink sleeve: EN 489:2009 type-tested sealing for district heating joints
Covalence DualSeal RJS-E is a wraparound heat-shrink sleeve for the joints of pre-insulated district heating pipes. PE-X backing, dual adhesive and a PCI temperature check. EN 489:2009, FFI-tested.
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Stopaq viscoelastic corrosion protection: self-healing steel pipe protection without sandblasting
Stopaq is a polyisobutylene-based corrosion protection that is applied cold without sandblasting or a primer. The compound stays viscoelastic and fills surface irregularities on its own.
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Stopaq Casing Filler: filling the casing annulus and preventing corrosion at road and rail crossings
An empty casing annulus is a place for hidden corrosion. Stopaq Casing Filler displaces water and oxygen from the annulus and keeps the carrier pipe dry for its full service life.
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BG Industry shrink sleeve: prefabricated HDPE PE 100 plastic for fast installation of district heating joints
A prefabricated shrink sleeve made from jacket-grade PE 100 polyethylene with a butyl seal is a fast choice for standard-size district heating lines. EN 489:2009 type-tested at FFI.
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Protecting field joints on buried steel pipelines: ISO 21809-3 and choosing the right family
The field joint is where the factory coating ends. Here is how to choose protection according to ISO 21809-3 and EN 489, and when Stopaq fits, when Covalence or BG Industry fits.
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Shrink sleeve or shrink wrap? Choosing the joint seal for pre-insulated pipe
A pre-insulated pipe joint can be sealed with a shrink wrap or a shrink sleeve. Both meet EN 489. Here is how the choice is made in practice.
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CUI: corrosion under insulation, and how to prevent it
Corrosion hidden under insulation (CUI) is the most insidious type of damage in industrial piping because you cannot see it. Here is how it forms and how joints and fittings are protected.
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Sealing a district heating joint and EN 489: what the standard requires
The joint in a pre-insulated district heating pipe is the weakest point in the line. EN 489 defines when a joint is sufficiently tight. Here is how the standard works and why a joint leaks.
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