Base plate thickness 6mm. Installation hole diameter 11.2mm. It can be equipped with direction lock, metal tread brake, metal side brake, metal double brake and nylon double brake. The quality of industrial casters also needs to be evaluated through caster braking force test, horizontal force static pressure test and steering braking force test. Generally speaking, the larger the bearing range of casters, the thicker the caster support is required, for example, If the goods are handled frequently and the load is relatively large (the bearing range of each caster is between 150kg and 700kg, it is more suitable for the double row ball wheel frame of 5-6mm stamping, hot forging and welding).   Quality Assurance We have advanced testing equipment in the industry. We strictly and comprehensively test the incoming and outgoing of each batch of products. We are equipped with various caster testing equipment, which makes it clear that the products must be tested in strict accordance with the quality management standards before leaving the factory, such as product service life test, impact resistance test, salt spray test and so on. Impact resistance test Caster wheel load-bearing walking life test Salt spray test High temperature resistance test Packing&Shipping