目前国内火电厂烟囱钢内筒施工常采用液压顶升倒装法、气压顶升倒装法、卷扬机提升法和悬索液压提升法。
Some chimney in He nan applies concrete outer cylinder structure with internal steel tube, which adopts construction of wire-rope hydraulic lifting equipment.
液压提升倒装法是一种先进的多管式烟囱钢内筒安装方法，属国内首创。
Hydraulic lifting upside-down method is advanced for the internal steel stacks' installation, and it was firstly invented inland.
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