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为解决国内需要，我厂设计制造了大口径工程钻孔设备——XY-5G型工程施工钻机（见图）。该设备是1983年7月应天津市第一市政工程公司要求而研制的。据了解，施工部门急需具有以下特点的工程施工钻机：（1）能在窄小施工场地周旋，如多数城市要在拆毁后旧建筑原址上兴修高层建筑；（2）可在较为复杂的地层进行大口径基桩孔施工；（3）钻孔能力、垂直精度及机动性要求都比较高。设计中我们吸取该公司用我厂生产的XU600-3型钻机在天津市污水处理厂
In order to solve the domestic needs, I plant design and manufacture of large-caliber engineering drilling equipment - XY-5G-type construction drilling rig (see photo). The equipment was developed in July 1983 at the request of Tianjin No. 1 Municipal Engineering Company. It is understood that the construction sector urgently needs to have the following characteristics of construction rigs: (1) can work in narrow construction sites, such as the majority of cities in the demolition of old buildings after the original site to build high-rise buildings; (2) can be carried out in more complex formations Large diameter foundation pile construction; (3) drilling capacity, vertical accuracy and mobility requirements are relatively high. We learn the design of the company with my factory production XU600-3 drilling rig in Tianjin Sewage Treatment Plant