Description

Technical Parameters

ASB Composite pex pipe(pex-al-pex pipe) for water plumbing & heating & Gas system, size from 12mm to 63mm, approved by CE/SKZ/AS4176.8 certificate, suitable for working temperature 95℃ & working pressure PN 10bar. 50 years use life, 15 years quality warranty. More details about the composite pex pipe please contact with us.

Product Description

Composite pex pipe

Composite pex pipe, in the form of PE-AL-PE or PEX-AL-PEX, is the composite pipe of 5 layers. It consists of a middle Aluminium layer with an inner and outer plastic layers, tightly bonded with a special adhesive to the Aluminium core. The plastic materials used for the inner and outer layers are either cross-linked polyethylene (PEX) or polyethylene (PE), which is hygienic, toxic-free and smooth. The middle Aluminium layer is absolutely 100% diffusion tight which reliably prevents gases and oxygen from permeating into pipe. Such structure compensates and reduces snap-back forces and heat expansion with changes of temperatures. The composite PA pipe combines the advantages of both metal and plastic while avoiding both of their weaknesses.

Pex material

PEX (Cross-linked Polyethylene) is a high performance and flexible polymer pipe. It is formed by chemically bonding individual polyethylene molecules in order to enhance the physical properties and to improve the performance of the original base resin in higher temperature and pressure conditions

Specifications of ASB Composite pex pipe

Nominal（mm)	16	20	25	32	40	50	63
Inner diameter(mm)	12	16	20	26	32	41	51
Wall thickness(mm)	2.0	2.0	2.5	3.0	4.0	4.5	6.0
Internal valume of water(l/m)	0.113	0.201	0.314	0.531	0.960	1.385	2.289
Working temperature(℃) Pe-al-pe pipe	A range of -45℃ to 60℃, 60℃ at 4 bars/20℃ at 12.5bars
Working temperature(℃) Pex-al-pex pipe	A range of -45℃ to 95℃, Peak temperature:110℃(Max duration of 1 hour)
Max.working pressure(Bars)	95℃ at 4 Bars / 70℃ at 10 Bars
Burst pressure(Bars)	80
Min ring strength(N)	≤2000	≤2400	≤2400	≤2650	≤3200	≤3500	≤5200
Thermal conductivity(W/mk)	0.43( vs copper at 28.0)
Coefficient of thermal expansion(mm/m*k)	0.025-0.030
Surface roughness of inner pipe	0.007mm(7um)
Oxygen barrier(%)	100
Bending radius(free tool)	≥6x of pipe outer diameter
Bending radius(with tool)	≥3.6x of pipe outer diameter
Working life-span	> 50 years
Length in coil(m)	100	100	100	50	50	50	50
Length in straight tube(m)	--	--	--	--	5	5	5
Equivalent to copper pipe size(mm)	15	18	22	28	35	42	54
Equivalent to stainless steel pipe size(mm)	3/8”	1/2”	3/4”	1”	1-1/4”	1-1/2”	2”
Equivalent to PPR(PN20) pipe size(mm)	20	25	32	40	50	63	75