Frequently asked questions

We specialize exclusively in manufacturing multilayer composite pipes (coils and straight lengths) and do not supply fittings directly. Pipes use metric OD and wall-thickness specifications, with nominal inner diameters listed on product pages to help you select the corresponding connection system for your market.

Overlap-welded aluminium has a narrow overlapping seam; butt-welded aluminium is joined edge to edge, giving an even wall and round profile. Butt-welded models end in -B.

Each pipe carries the model code, size, production date and batch number, so every length can be traced to its production record.

The Standards page lists our product design references. We hold ISO-related certificates and certificates for European markets. Contact us to review their scope and the documents applicable to your selected model and destination.

Yes. Brand name, model code, size and standard reference can be inkjet-printed along the pipe at regular intervals. We send a sample of the marking for approval first.

White is standard. PE-RT/AL/PE-RT is also common in orange, PP-R/AL/PP-R in green or grey; other colours can be matched for OEM orders. Gas pipe (PE-AL-PE Gas Pipe) has a yellow outer layer.

16–20 mm in 100 or 200 m coils, 25–32 mm in 50 or 100 m coils, 40–75 mm in 4 m or 5.8 m straight lengths; PP-R/AL/PP-R in 4 m lengths. Exception: gas pipe 40 mm comes in 50 or 100 m coils.

Yes. Mixed sizes and series can be combined in one container; we prepare a loading plan with the packing list.

Commercial invoice, packing list and the product datasheets. Further documents for your import market can be discussed per order.

Send an inquiry with the series, sizes and delivery address; we ship sample lengths by courier.