GB/T 37997-2019输送烃类、溶剂和化学品用多层热塑性塑料(非硫化)软管及软管组合件规范国家标准
英文:Thermoplastic multi-layer (non-vulcanized) hoses and hose assemblies for the transfer of hydrocarbons, solvents and c...
英文:Thermoplastic multi-layer (non-vulcanized) hoses and hose assemblies for the transfer of hydrocarbons, solvents and c...