【摘要】 介绍GB/T 20492《锌-5%铝-混合稀土合金镀层钢丝和钢绞线》的制订原因、标准内容、适用范围及产品分类,从锌-5%铝-混合稀土合金镀层钢丝和钢绞线产品的要求、试验方法、检验规则对GB/T 20492进行评述,指出镀层重量、接头规定是标准制订中争议较大的内容。更多还原

【Abstract】 To introduce the establishment reason,standard content,application scope and products classification of GB/T20492 Zn-5%Al-RE alloy coating steel wire and steel strand.From the requirements,test methods and inspection rules of Zn-5%Al-RE alloy coating steel wire and steel strand products,the GB/T20492 standard is reviewed.It is pointed out that the coating weight and joint determination are controversial content in establishing standard.更多还原