... on the ground,hydraulic hoisting through computer control.The main construction characteristics and difficulties:1. Huge hoisting area:the ... of steel structures, steel bulding, metal building, modular house,Steel frame for warehouse, workshop, garage etc, steel beams, other riveting ... )Surfrace: Paint or hot dip galvanize!10) Packing: Main steel frame without packing load in 40'OT, roof and wall panel ...