本單元起重機符合JB/T4406《通用門式起重機》及JB/T53443《通用門式起重機產品質量分等》規定，是用於礦山
，碼頭及工廠的露天作業。按照結構特點分為L型單主梁及A型雙主梁兩種形式。A型雙主梁門式起重機抗風穩定性優越，Lxingdanzhuliangmenshiqizhongjizhituichutongguoxinghao，diandonghuludanliangmenshiqizhongjiqingbianjialian，anzhaoquwuzhuangzhitedian
，youkefenweidiaogouhuozhuadoumenshiqizhongji，yekepeiyongdiancixipan
，yonglaibanyunsanzhuangheisejinshu，peiyongxuanzhuandiaogoudemenshiqizhongjishihegaocengduifangzuoye。
本機是貨場、碼頭、工廠、cangkudengwuzizhuanyunzuoyezhongdelixiangshebei，gongnengquanmian，xiaolvjiaogao，ciwaibenchanghaichengjiegezhongqizhongshebeidefeibiaodinghuo
，daiweisheji，jiageheli，jiaohuoxunsu。