In the hot summer of scorching sun and scorching sun, TYSIM foundation low headroom KR300ES rotary drilling rig participated in the construction of Guangzhou Metro Line 14 Phase II project.The second phase of Guangzhou Metro Line 14 is one of the routes under construction in Guangzhou Metro, which belongs to Guangzhou urban rail transit system. The line starts at Jiahe Wanggang Station in the first phase of the project and ends at Guangzhou Railway Station. The line is 11.9 kilometers long and is laid underground, with a total of 8 stations. The line adopts 6-section marshalling B- type vehicles with a maximum operating speed of 120 kilometers per hour.The project has strict requirements on the construction height, requiring the construction equipment height not to exceed 12 meters, the pile diameter of the construction site is 1000mm and 1400mm, the pile depth is 31 meters, the geological conditions are complex, the bottom 1-14m is silty sand layer, 14-31m is argillaceous silty sand rock, the construction height of TYSIM KR300ES low headroom rotary drilling rig is 11 meters, the maximum drilling diameter is 2000mm, and it is equipped with 300kN.m high torque power head, proper proportion of mud is allocated to protect the wall to solve the problem of hole wall collapse, and at the same time, strong power is used to improve the construction efficiency of rock entry. It perfectly solves the problems encountered in engineering construction, such as small space, large pile diameter, deep depth, difficult to enter the rock and so on. Fast construction and high efficiency customers make money and win unanimous praise from construction site personnel.Wuxi TYSIM Foundation Engineering Co., Ltd. takes "service" as the core, focusing on the sales, leasing, construction, replacement, remanufacturing, service, labor and training, construction method consulting and promotion of small and medium-sized piling machinery. The company has more than 80 sets of small and medium-sized piling equipment, and has fully cooperated with 12 member companies of Luying Society to reach a market partnership. Relying on dozens of pile manufacturers to achieve professional maintenance and service delivery of equipment, establish a maintenance cooperation base, and have a professional technical team skilled in construction methods, equipment maintenance and many years of industry experience. to provide customers with professional construction process guidance and construction scheme. After six years of accumulation and investment, cooperation with customers or independent construction, with small rotary drilling rig to complete the fishing light complementary, dam reinforcement, underground pipe gallery, water construction and other new areas of construction applications, for the domestic small rotary excavation method to promote the application of contribution. TYSIM Foundation will manage more than 100 rotary drilling rigs and is committed to building a leading professional piling service platform at home and abroad.