The carat tube is a hot-wound high-density polyethylene (HDPE) wound structure wall pipe. The wall
pipe is made of high-density polyethylene resin as the main raw material, and it is made of hot-wound pop-type process with polypropylene (PP) single wall. The bellows is made of a support structure and is made of a special structural wall pipe having a high resistance to external pressure. Carat tube products can be divided into PR, OP, SQ, VW three series.
