GB/T 39248-2020输送液化石油气和液化天然气用热塑性塑料多层(非硫化)软管及软管组合件规范标准
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...