输送无水氨用橡胶软管及软管组合件 rubber hose and hose assemblies for transferring anhydrous ammonia
塑料软管及软管组合件液压试验方法 rubber and plastics hoses and hose assemblies-hydrostatic testing
塑料软管及软管组合件真空性能的测定 rubber and plastics hoses and hose assemblies-determination of suction resistance
橡胶、塑料软管及软管组合件 液压试验方法 rubber and plastics hoses and hose assemblies--hydrostatic testing
橡胶和塑料软管及软管组合件 rubber and plastics hoses and hose assemblies-determination of electrical resistance; rubber and plastics hoses and hose assemblies-determination of permeability to gas
塑料软管及软管组合件无屈挠液压脉冲试验 rubber or plastics hoses and hose assemblies-hydraulic impulse test without flexing