... NameMain ProductsMaterialPart of Technical RequirementJiangsu Pengfei Group Co.,Ltd.Support roller, kiln tyre, girth gearZG35CrMo,ZG42CrMoUltrasonic test Grade ... 3Jiangsu Haijian Stock Co.,Ltd.Support roller,kiln tyre,girth gearZG35CrMo,ZG42CrMoUltrasonic test Grade ... blade,rudder hornZG200-400Ultrasonic test Grade 2 support roller for cement mill by steel casting