... proof,corrosion resistance,decent Cold bend 90 and 180 degree Plastic tube.Product Introduction: Songsu pvc pipeMaterial: ... .Thickness With appropriate temperature and accurate molds machinery technology, the thickness,size,shape can be precisely controlled.2 ... -retardant pvc resin,highly combustion-retardant,quickly self-extinguishing.4.Corrosion resistanceMoisture, acid and alkali resistance,, ...