DIN EN ISO 4671:2012
橡胶和塑料软管及软管组件.软管尺寸和软管组件长度的测量方法
Rubber and plastics hoses and hose assemblies - Methods of measurement of the dimensions of hoses and the lengths of hose assemblies (ISO 4671:2007 + Amd 1:2011); German version EN ISO 4671:2007 + A1:2011