... Wheel Rims/Agricultual Wheel Rims Model: 5.50x16,9X15.3,W10X24,W10X28,W11X28,W12X28,W12X38,W12X24,W13X30,W14X28,W14X38,W15X24 ... /good shape of raw steel is critically important for final products. 3. Experienced technicians and workers with regular training to keep ... treated. Hardness testing HB280-320 . Strict couple making. 5.3 times static overload testing; 1.5times dynamic overload testing; 1million ...