helical blade coil spring-insert

Helical blade coil spring-insertScrew type[different plastic property, can choose different structure of the screw, more can improve the plasticizing effect] gradient type, mutation type, wave type, barrier type, double screen, FenLiuXing, separation, PaiQiXing, pin type, mixed type, double head, three head type, long type, etc.Scope of applicationWPC PVC.WPC PE,supper high molecular sheet, 1 / 2 high calcium buckle, 50-400 high calcium pipes, 50-300 high calcium profiles,