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18) NEW PE-Xc / AL Pipes System: ALMATHERM PE-Xc / AL Material: PE-Xc / AL Standard: EN ISO 15874, DIN 8077, DIN 8078 Details: 5-layer, particularly resistant pipe of cross-linked polyethylene pipe PE-Xc with an longitudinally welded aluminum layer. Increased heat resistance (acc. to EN ISO 15875). Oxygen barrier of aluminum according to DIN 4726, Tmax 110°C. |
| Dimension | Unit | Large package | Small package | Weight [kg/pcs] |
Volume [dm3/pcs] |
Catalog number | D [mm] | s [mm] | I [mm] |
|---|---|---|---|---|---|---|---|---|---|
| 16 x 2,0 | m | 200 | cardboard | 0,112 | 0,60 | AA131016200 | 16 | 2,0 | 200 |
| 16 x 2,0 | m | 400 | foil | 0,112 | 0,60 | AA131016400 | 16 | 2,0 | 400 |
| 18 x 2,0 | m | 200 | cardboard | 0,136 | 0,60 | AA131018200 | 18 | 2,0 | 200 |
| 20 x 2,0 | m | 200 | cardboard | 0,154 | 0,60 | AA131020200 | 20 | 2,0 | 200 |
Demands on the Pipe:
The most important component of a heating system or a potable water installation is the pipe.
The PE-Xc/AL/PE-RT multilayer pipe provides the following benefits:
* minimized linear expansion
* dimensionally stable after installation and operation
* pressure and temperature-stable
* high reliability of assembly under site conditions
* no harassment by flow noise at constant flow rates
* impermeable to oxygen (according to DIN 4726)
* high resistance to aggressive water or additives
* resistant to corrosion and incrustation due to smooth inner surfaces
* maximum safety due to laser-welded seam
* optimum bonding of the layers by polymeric adhesive layer
These properties fulfills the ALMATHERM PE-Xc / AL / PE-RT pipe.
The requirements of EN ISO 21003-2 for multilayer pipes and DIN 4726 for heating pipes are met and exceeded in many points.
Specifications of PE-Xc/AL/PE-RT pipes (informative):
Raw Material:
The tube is made of an electron beam cross-linked polyethylene (PE-Xc) with butt TIG laser welded aluminum sheet and an outer layer of polyethylene with raised temperature resistance.
The basic pipe is made of a special polyethylene quality which has excellent compressive strength and ageing properties due to appropriate modifications. This material is also protected against degradation by heavy metal ions using a metal deactivation.
Examinations according to ISO 9080 carried out through independent institutes have attested the conformity of the basic material to the product standard and have proven this material to be a PE-Xc (polyethylene of raised temperature resistance).
Owing to the minimised creep tendency of the basic material this system is particularly suitable for the use with pressure fitting systems.
The aluminium foil used is an alloy that has been developed for this application and that has been optimised for the use of expanding tools.
The protective layer is also made of a high stability polyethylene. Due to a stabiliser packet it is protected against ageing. It is also possible to equip the protective layer with
Pipe Production and crosslinking:
The production of the tubes pipe place in a 3-step-process:
* Extrusion of polyethylene pipes on modern extrusion lines with minimal tolerance.
* Crosslinking of the basic pipe is continously done after extrusion by fast high-energy electrons on Europe´s most modern and efficient electron accelerators.
* Sheathing of the cross-linked basic pipe on our laser / TIG welding units. In this process the aluminum sheet with a thickness of 200-80 0 μm is butt laser or TIG welded and durably joined to the basic pipe by means of an adhesive layer. Then, the pipe is equipped with a cover sheet of polyethelene, which serves as a protection against corrosion and gives the pipe a consumer-specific finish.
Quality assurance by internal control:
During production the PE-Xc/AL pipe of ALMATHERM has to undergo strict controls according to the relevant product standards such as DIN EN ISO 21003 and DIN 4726.
Among other investigations, the following tests are made:
* preprocessing control of the raw material charges
* dimensional continuity and accuracy of the pipes
* mechanical-technological tests according to standard, eg. internal pressure test
Quality assurance by external control:
The most important characteristics are constantly tested within the scope of supervision contracts. Depending on the country and the type of pipe, the pipes are supervised.
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