包层钢 meaning in English

clad steel
cladding steel
colclad
conflex
oxally

Testing methods for clad steel
包层钢的试验方法
Stainless - clad steels
不锈钢包层钢
Stainless - clad steel
不锈包层钢
Standard specification for aluminum , aluminum alloy and aluminum - clad steel cable shielding stock
铝铝合金和铝包层钢电缆屏蔽材料标准规范
Welding - recommendations for welding of metallic materials - part 5 : welding of clad steel ; german version en 1011 - 5 : 2003
焊接.金属材料焊接的推荐规范.第5部分:包层钢的焊接