... Insulated Copper Tube Specifications:1) Classification: PE coated copper tube, PVC and NBR coated copper tube2) Norminal Diameter: 15, 16, 19, 22, 28, 35, 42 ... non-toxic, bacteriological neutral, conforming to drinking waterstandards2) Resistant to high temperatures (110°), good impact strength3) Unique and unrivaled German connection ...