Materials 

Chain piece:40Mn2(common)40MnBn(wear-resisting)

Chain shaw:40Cr

Chain tong:40Cr

Heat Treatment

Chain piece:HRC50°-55°  HB270°-297°

Chain pin:    HRC55°-60°  HB270°-297°
Chain tong:     HRC55°-60° HB270°-297°

Main Features

1)Made of special steel material,pin and bush go through special heat treatment . so the wear-resitance is improved to         maximum extent .Chain inside is spread with lubrication oil and equipped with polyurethane dust seal and further             prolong life time .

2) All chains are assembled with the high precision design and manufacturing parts.so the wear-resitance

3) Differential type of quenching or through type of quenching heat treatment can ensure certain heat treatment hardness depth and so give good anti-cracking effects