洁净钢平台建设
construction of clean steel platform
海洋钻井平台钢
petroleum well drilling sea platform steel
提模钢平台
steel platform for hoisting template
整体顶升钢平台可变模架体系
ack-lifting steel-plate convertable module-frame system
整体钢平台模板体系
integral steel platform formwork system
E-Z35海洋平台用钢
E-Z35 offshore platform plate
常规桩承钢质平台
conventional piled steel platform