深井作业 meaning in English

heavy duty service

Type nhss wire rope pulling hoist is widely suitable for use in bridge - construction , laying of large - size pipes , installation and adjusting of machinery an electric apparatus , and large reaction tower of petrochemical industry ; the installation and alignment of storage tanks ; erecting , fitting , welding and alignment of masts , steel concrete timber structures ; laying and translocating of rails and sleepers ; loading and unloading bulky heavy goods during transportation . cable tensioning ; demolishing of gallery supporting logs ; stacking forrestry wood ; and othersimilar cases . the hoist of this series is especially suitable for use in narrow working sites of limited space , where the job is high above the ground or in open air places , in tunnel of deep well , where no power for traction or lifting is available
Nhss型钢丝绳手扳葫芦可广泛用于建筑施工、大型管道铺设、机电设备和石油化工大型反应塔、储罐的安装、校准、铁塔及其它钢木结构的竖立、拼装焊接、校准、铁轨、枕木的铺设、移位、交通运输中笨重货物的装卸、电线张紧、坑道支撑木的拆除、林区木材的集放等等，对于局部空间受到限制的狭窄工作场所、高空作业、野外作业、坑道、深井作业和无机电供能场所的各种牵引、提升作业、选用本系列产品尤为适宜。