Shrink collars and shrink tapes for corrosion protection and district heating
Technical Properties
| • Base material | PEX |
| • Adhesive | butyl based hot-melt |
| • Standard length | 150-225-450 |
| • Minimum thickness | 2.0 mm |
| • Max operating temp | 50 °C |
Shrink collars are usually used together with shrink muffs for the “Dual Seal” Joints according to EN 489, which are characterized by a double sealing of the joint area.
They consist of a crosslinked polyethylene backing, responsible for mechanical and heat-shrinkable performances, coated with a special hot-melt adhesive which guarantees an excellent grip to polyethylene shrinkable muffs and casing pipes.
The same product can also be used for the corrosion protection of the welding area in coated steel pipelines.
Product Range
| ODPIPE [mm] |
OD [mm] |
DMIN [mm] |
ODPIPE [mm] |
OD [mm] |
DMIN [mm] |
|
|---|---|---|---|---|---|---|
| 90 | 115 | 80 | 225-200 | 260 | 165 | |
| 110-90 | 130 | 90 | 250-225 | 290 | 185 | |
| 125-110 | 155 | 100 | 280-250 | 330 | 210 | |
| 140-125 | 170 | 110 | 315-280 | 370 | 235 | |
| 160-140 | 190 | 125 | 400-355 | 450 | 285 | |
| 180-160 | 210 | 135 | 450-400 | 505 | 315 | |
| 200-180 | 225 | 145 | 560-500 | 625 | 385 |
Other dimensions upon request
Reference Standards
| EN 12068 | External organic coatings for the corrosion protection of buried or immersed steel pipelines used in conjunction with cathodic protection – Tapes and shrinkable materials |
| EN 489 | District heating pipes – Preinsulated bonded pipe systems for directly buried hot water networks – Joint assembly for steel service pipes, polyurethane thermal insulation and outer casing of polyethylene |
Technical Properties
| • Base material | PEX |
| • Adhesive | butyl based hot-melt |
| • Standard length | 150-225-450-600 |
| • Min thickness | 2.0 mm |
| • Max operating temp | 50 °C |
| • Sealing method | with closure patch |
Wrap around tapes made of cross-linked polyethylene (PEX) coupled with a hot melt butyl based adhesive are used to seal joints for district heating as an alternative to collars either on particularly big or out-of-standard diameters or in case of repairing interventions.
Since the tape is open the final sealing of either ends must be carried out by a special closure patch made of cross-linked polyethylene coupled with an ethly-vinil-acetate (EVA) adhesive layer.
Such tapes can be delivered in rolls 30 metres long or cut upon request for each diameter and packed with pre-applied closure patch.
Reference Standards
| EN 12068 | External organic coatings for the corrosion protection of buried or immersed steel pipelines used in conjunction with cathodic protection – Tapes and shrinkable materials |
| EN 489 | District heating pipes – Preinsulated bonded pipe systems for directly buried hot water networks – Joint assembly for steel service pipes, polyurethane thermal insulation and outer casing of polyethylene |
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