Yongmao STT139 tower crane is a flat-head tower crane with excellent performance. The following is an introduction from aspects such as basic parameters, product features, and application scenarios: Basic ParametersAmplitude: The maximum amplitude is 60m, enabling material lifting operations within a large range. Maximum lifting weight: The maximum lifting capacity is 6000kg, which can meet the lifting requirements of various building materials and components. End-of-arm lifting weight: At 60m at the end of the boom, the lifting weight is 1350kg, ensuring the lifting capacity at the distal end of the boom. Independent height: The independent height can reach up to 45.4m, enabling it to reach a relatively high operating height without relying on external support. Product FeaturesNovel design and reasonable structure: Adopting a novel design concept, the structural layout is carefully optimized to make the whole machine more stable and reliable during operation, effectively reducing vibration and sway, and improving the safety and accuracy of operations. High safety: On the one hand, the tie-rod-free design of flat-head tower cranes reduces the tower top height, reduces wind resistance and center of gravity height, and improves the service life and safety of the boom steel structure. On the other hand, in the design and manufacturing process, relevant safety standards are strictly followed, and complete safety devices such as lifting weight limiters, lifting height limiters, and amplitude limiters are equipped to ensure the safety of operators and equipment. High operating efficiency: The tie-rod-free design enables it to better adapt to the requirements of different working condition sites, and is particularly suitable for cross-operation of multiple tower cranes and tower crane assembly and disassembly under limited construction site conditions. Its small unit mass and low installation height can reduce the height difference between tower bodies and save space, thereby improving operating efficiency and shortening the construction period. Convenient maintenance: The maintenance of this tower crane is relatively simple and easy for daily maintenance and repair. The design of each component is convenient for maintenance personnel to approach and operate, reducing maintenance time and cost and improving the utilization rate of equipment. ManufacturerEnterprise background: Fushun Yongmao Construction Machinery Co., Ltd. was established in 1996 and is one of the most important construction machinery equipment manufacturers in the world. Its products cover more than 80 countries and regions around the world. Technical strength: It has many senior technical experts enjoying national subsidies. It has been rated as a "provincial enterprise technology center" and a "high-tech enterprise in Liaoning Province". It has successively established technology research and development centers in cooperation with Harbin Institute of Technology and Beijing Institute of Civil Engineering and Architecture respectively, and established an industry-university-research cooperation relationship with Shenyang Jianzhu University. Application ScenariosResidential construction: In high-rise residential construction, the STT139 tower crane can be used for lifting building materials such as steel bars, concrete components, blocks, etc., providing strong support for the main structure construction of buildings. Commercial building construction: For commercial buildings such as shopping malls and office buildings, this tower crane can meet its larger construction range and weight requirements and assist in completing operations such as steel structure installation and glass curtain wall lifting. Industrial plant construction: In the construction process of industrial plants, it can be used for lifting large equipment foundations, steel structure roof trusses, crane beams, etc., ensuring the rapid construction of plants and equipment installation. Market feedback: The Yongmao STT139 flat-head tower crane has received good feedback in the market. Users generally believe that its performance is stable and reliable, its operating efficiency is high, and it is easy to maintain and repair. At the same time, the after-sales service provided by Yongmao Construction Machinery is also highly praised by users.