ISO 7751:1991/Amd 1:2011 橡胶和塑料软管与软管组件--试验压力和爆破压力对最大工作压力的比值.修改件1:在整个文本内将"设计工作压力"更换为"最大工作压力"
Rubber and plastics hoses and hose assemblies - Ratios of proof and burst pressure to maximum working pressure - Amendment 1: Replacement of "design working pressure" by "maximum working pressure" throughout text