Cast iron,Casting part -- Arm Axle,heavy-duty truck/tractor part,GG30(GGG40),HB210~259,35KGS. ... Features to Cast iron,Casting Part -- Arm Axle: 1.Material :GG30,GGG40.2.Unit weight:35kgs.3.Moulding ... machine industry,general machines industry,others.10.Representative product:Arm axle,housing,bearing stand,bolster,cover,front frame,rear fame.