DALIAN ZHAOHUA CONSTRUCTION AND MACHINERY CO.,LTD
Material 31SiMn2,; Casting, Heat Treatment, the hardness after Tempering HRC25.5-32.5; Large Stock; Warranty 2500 working hours.
Material 28CrMnMo; Casting, Heat Treatment, the hardness after Tempering HRC25.5-32.5; Large Stock; Warranty 2500 working hours.
Material 31SiMn2; Casting, Heat Treatment, the hardness after Tempering HRC25.5-32.5; Large Stock; Warranty 2500 working hours.