... of aluminum, the expansion co-efficient a samll metal pipe with considerable strength, toughness, impact resistance.5. Corrosion-resisitant, non-scaling ... side of our products are very smooth, flowing water with small force, soft color, and beautiful graphics.10. Can be buried, metal detectors ... *3.0PE-AL-PE(cold water)16*2.020*2.025*2.532*3.0 laser welded pex-al-pex pipe for cold and hot water