6inch Iron Core PU Ball Bearing Swivel Caster Wheels for ISO Shipping Containers Castors Docks and Logistics Factories Use New

6inch Iron Core PU Ball Bearing Swivel Caster Wheels for ISO Shipping Containers Castors Docks and Logistics Factories Use New. Heavy Duty Load Capacity: Supports up to 1250kg per caster with a total dynamic load of 3,750kg for a set of 4. Twist-Lock Mechanism: Equipped with twist-lock for secure fitting and locking into ISO 1161 corner castings. Directional Lock Feature: Allows locking rear wheels to guide containers in a straight line or keep them stationary. Durable PU Material: Features cast iron core with polyurethane treads for robust heavy-load performance. OEM/ODM Customization: Supports custom logo, packing, color, size, and material based on client requirements. Versatile Compatibility: Fits standard 20 and 40-foot ISO containers and can be customized for non-standard sizes. Professional Manufacturer: Factory established in 2014 with in-house lab for rigorous quality testing and assurance. ISO Compliance: Products comply with CE, RoHS, and ISO 9001:2015 quality management standards.