... ourselves, and every parts have to pass strict inspection before they are installed on the machine.6. ... materialPitch rangespeedpower requirementKBL-16-4(90)161-5mmPET,fiber glass,PP,PE,nylon0.5-20mm84round per minute,changeable380V ... 50-60Hz KBL-56-1(90)568-12mmPET ,fiber glass,PP,PE,nylon15-100mm20 round per minute, ... ,50-60Hz KBL-72-1(90)7220-30mmPET,fiber glass,PP,PE,nylon20-120mm15 round per minute ...