NF T47-251-1/A1:2011
橡膠塑料管及管配件的防爆及爆破壓力與設計工作壓力的比值.修改件1:整個文件中采用最大工作壓力代替設計工作壓力.
Rubber and plastics hoses and hose assemblies - Ratios of proof and burst pressure to design working pressure - Amendment 1 : replacement of "design working pressure by "maximum working pressure" throughout tex.