1.laser butt welding special technology 2.double face butt fusion hot water pipe 3.for heating radiator,drinking water system 1. Reduced ... -toxic, can be used for pure water, drinking water pipeline system, the product is a green building materials.4. Due to ... insert, safe and reliable.12. Long time life: the pipeing system under normal use life of up to 50 years. codedimensionpackage ...