... speed and material).3,Abrasion plate with material in.4,Two pieces of wing plate extending from the side plate, guiding material when feeding ... plant with advanced heat treatment technology1,Inside and outside chain plate:40Cr . 2,Pin shaft :20CrMnMo . 3,Sleeve :20CrMo . 4, ... the lengthening of the pitch. 3,External chain plate is punched into bending plate structure. And it is convenient to fix the ...