The compound of the middle layer is PVC foam warmer with close density contained oils
Φ12/16mm with tube wall thickness 2mm（±0.1mm）composited double with 3.5mm outer（±0.5mm）Φ16/20mm with tube wall thickness 2mm（±0.1mm）composited double with 3.5mm outer（±0.5mm）
(the PVC layer material different from soft asbestos), apply to warm at the range of -5 °C the outermost layer with corrosion protection, with anti-aging, anti-UV function
The internal tube with good flexibility, some bending stress relaxed & no rebound
With good low temperature properties, suitable for winter construction
Good chemical resistance& environmental adaptability, durable for long
Long service life of 50 years in 70 °C & working pressure≤0.4MPa
Without any toxic additives & environmentally friendly products, recyclable
The tube outer wall smooth, low resistance without fouling，clean.
Impact resistance is 5 times than PVC-U pipe
Mechanical connection & hot melt, reliable, non-leakage, but PEX only mechanical
Films Wrapped and packing in plastic woven bag,
80m per roll or as your required (80m≈23kg)
Solar water heater, Solar Engineering Construction, etc.Outer Tube Color: Black, WhiteOEM is accepted.