80/156 SKD insert conical twin barrel screw for PVC free foam board and PVC skin foam board

• screw cylinder material :

• 2 sections cylinder alloy length :

• screw alloy length :

• screw cylinder alloy depth :

• hardness after adjustment :

• nitrided depth :

• surface hardness after adjustment :

• screw straightness :

• cylinder straightness :

• cylinder concentricity :

• cylinder centrad :

• cylinder divided into :

• screw divided into :

• applications :