Steel OTR Rims for VOLVO Dumping Trucks 1.ISO/TS16949:2002 System 2.DOT&TUV Certificates Steel OTR Rims for VOLVO Dumping TrucksSteel OTR Wheels for engineering/construction and other special vehicles1. Light duty 1 piece otr wheel 2. Light duty 3 piece otr wheel 3. Medium duty 3 piece otr wheel 4. Medium duty 5 piece otr wheel 5. Medium duty large otr wheel 6. Heavy duty 3 piece otr wheel 7. ...