E型钢阻尼支座
E-shaped steel damping bearing
H形型钢砼墩帽梁
H-formed steel reinforced concrete cap beam
H型钢薄壁楔形梁
tapered H-section beam with thin web
H型钢端头
H sectional shape end socket
H型钢钢混叠合梁
H-formed steel concrete composite girder
H型钢生产线
automatic H shaped steel structure production line