PEX-AL-PEX Multilayer Pipes In China

PEX-AL-PEX Multilayer Pipes

Description:

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.

PEX-AL-PEX multilayer pipes.jpg


● 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.


Advantages:                                                                                                                        
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.


Specifications:                                                                                                                
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.

Specifications

(metric/inch)

Outer Diameter

(mm)

Inner Diameter

(mm)

Wall Thickness

(mm)

Packing Specif

(m)

1216
1/2"
16
12
2.0
50-500
1418
9/16"
18
14
2.0
50-200
1620
5/8"
20
16
2.0
50-200
2025
3/4"
25
20
2.5
50-100
2026
3/4"
26
20
3.0
50-100
2632
1"
32
26
3.0
50-100

Download Product List In Excel File


Technical Parameter:                                                                                                                     Risong PEX-AL-PEX multilayer pipes comply with ASTM F 1281/1282 standards, and can meet all techinical requirements as follows:

Specif.

  (mm)

Min. burst

pressure

(Mpa)

Min. pipe ring

strength

(N)

Hydrostatic
strength

(Mpa)

Working

temperature

(℃)

Working

Pressure

(Mpa)

1216
6.0
2300
2.7
-40~951.0
1418
6.0
2300
2.7
-40~951.0
1620
5.0
2500
2.7
-40~951.0
2025
4.0
2500
2.3
-40~951.0
2026
4.0
2500
2.3
-40~951.0
2632
4.0
2500
2.1
-40~951.0


Applications:                                                                                                                        

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.

201162394935293.jpg