Hose structure is usually divided into: an inner adhesive layer and outer rubber layer and frame layer (or middle-tier), inner adhesive layer directly under transmission medium wear and erosion

PPR is the abbreviation of type three polypropylene, also called random copolymer polypropylene pipe. It adopts thermal welding method, has special welding and cutting tools, and has high plasticity.

HDPE pipe, also called high density polyethylene or polyethylene pipe, is made of HDPE granule material

Raw material + color masterbatch → mixing → vacuum feeding → raw material drying → single screw extruder → Color line extruder → spiral mold → sizing sleeve → spray vacuum setting box → spray cooling tank → spray code machine → caterpillar tractor → finished product detection and packaging

PPR pipe specifications are expressed by tube series S, nominal outer diameter DN × nominal wall thickness EN

Hdpe tube is a kind of pipe made of High Density Polyethylene (English name is "High Density Polyethylene", referred to as "HDPE").