The national standard for casters GB14687-2011 aerospace shuangling drafting standard unit GB/T14687-2011 "industrial casters and wheels" replaces GB/T14687-1993 "industrial wheels" and GB/T14688-1993 "industrial casters" to guide the performance testing of caster products. the standards include the number of caster products, wheel materials, installation methods, installation parameters, etc., as well as the standards for caster bearing, rotation, walking, conductivity and corrosion resistance.