1,Supply york brake shoe for truck,semi-trailer. 2,produce Brake drum, ... 420*200 and 420*180mm We can supply various brake shoe for trucks, semi-trailers. Produce brake parts similar ... drum use the international standard material of ball iron and gray iron separately, which has the advantages of over loading ... , semi-trailer parts.2,produce Brake drum, Brake shoe and other spare parts.3,BPW standard.