Risong PEX-AL-PEX multilayer pipe is a kind of five-layers' pipe that combines the advantages of a metal and plastic pipe and eliminates the disadvantages of both materials at the same time.Both inner and layer are made by PEX-b material, which made PEX-AL-PEX multilayer pipe can be used at 95℃ hot water, the aluminum core in middle layer is absolutely diffusion tight, which can reliably prevents oxygen/gases from permeating into the pipe. The PEX-AL-PEX multilayer pipe can compensate and reduce snap-back forces and heat-expansion with changes of temperature.
● Overlapped welded pipe is co-extrued with one step with perfect adhesive between inner/outer layer of PEX-b and middle layer of aluminum, high and stable pressure resistance, of which welding style is ultrasonic.
● Butt welded pipe is moulded with several steps that is argon-arc welding style.
Risong PEX-AL-PEX multilayer pipes combine the positive characteristics of plastic material and aluminum.The main disadvantages as follows:
● They are flexible and easy to install and suitable to the installation situation.By this advantages the installation times are shorter.
● They are resistant against temperature-and pressure strain in tap water and heating application.
● They are oxygen-impermeable and can prevent incrustation in the heating system, owing to aluminum core in middle layer.
● They are hygienically and neutral in material, even in case of high PH-value fluctuation of the tap water.
● They are corrosion free and have a reliable life-time.
● They have a plain surface that grants non-incrustation. By this the cross-section reduction can be excluded and a constant flow rate is granted.
● They are resistant to mechanical impacts e.g. during the transport on the construction site.
● They are stable against solvents and other chemicals.
Material: Top quality PEX-b raw materials (crosslinking rate≥65%).
Colors available: white for cold water, red color for hot water, yellow color for gas.
Related references: ASTM F 1281/1282 standards.
Packing length: packed by rolls, each roll length can be 50 meters to 500 meters.
Both overlapped welded PEX-AL-PEX multilayers and laser welded PEX-AL-PEX multilayers are available.
Technical Parameter: Risong PEX-AL-PEX multilayer pipes comply with ASTM F 1281/1282 standards, and can meet all techinical requirements as follows:
Min. pipe ring
The whole PEX-AL-PEX multilayer piping system from Risong is a ideal solution for variety of applications:
● Cold and hot water plumbing system, especially for the transportation of hot water.
● Heating pipes for underfloor heating system for indoor buildings.
● Coal gas and natural gas pipes.