彩色涂层钢板
prepainted steel sheet
color coating steel sheet
precoated sheet steel
precoated steal sheet
prepainted(galvanized) sheet
armor plate coated paint
富锌有机涂层钢板
steel plate of rich-zinc organic coat
钢板衬砌混凝土管
steel-lined concrete pipe
钢衬钢筋混凝土
steel-lined reinforced concrete(SRC
steel lining reinforced concrete
composite reinforced concrete penstock
Steel-lined Reinforced Concrete
reinforced concrete with steel liner
钢衬钢筋混凝土结构
structure of steel lined reinforced concrete
钢衬钢筋砼管
steel lined reinforced concrete pipe