There are four broad classifications of steel: carbon steels, alloy steels, high-strengthlow-alloy steels and stainless steels.
钢材大致可分为四类：炭素钢，合金钢，高强度低合金钢和不锈钢。
2
The quality of resistance spot welding of low carbon steel and highstrengthlowalloysteel is studied by looking into the dynamic voltage characteristics of the electrodes.
本文通过对电阻点焊电极电压动态特性的分析，研究了低碳钢及低合金高强度钢电阻点焊的质量问题。
3
For welding low-alloy and highstrengthsteel with corresponding strength grade.