徐工(gōng)QY20K5起重机具有以下优点：1. 高承载能力：徐工(gōng)QY20K5起重机具有20吨的(dí)起重能力，能够应对大部分起重作业需求。2. 卓(zhuó)越的(dí)安全性能：徐工(gōng)QY20K5起重机配备有完善的(dí)安全保护装置，如超重、超载、超高、超限等多种保护装置，确保施工(gōng)过程中的(dí)安全可靠。3. 灵活性强：徐工(gōng)QY20K5起重机可360度旋转，配备多段式折叠臂，能够在狭小的(dí)工(gōng)作空间内完成(chéng)复杂的(dí)起重作业，提高施工(gōng)效率。4. 操(cāo)控简便：徐工(gōng)QY20K5起重机采用(yòng)液压驱动，配备操(cāo)作平台，操(cāo)作简单便捷，可以迅速熟悉操(cāo)作技巧。5. 低运输成(chéng)本：徐工(gōng)QY20K5起重机整机重量较轻(qīng)，容易 进行拆装和运输，降低运输成(chéng)本。6. 低能耗：徐工(gōng)QY20K5起重机采用(yòng)先进的(dí)液压系统和电控系统，具有低能耗的(dí)特点，节能环保。7. 可靠性强：徐工(gōng)QY20K5起重机采用(yòng)高强度钢材制造，结构牢固，具有良好的(dí)承载性能和稳定性，能够适应各种复杂环境的(dí)作业需求。总之，徐工(gōng)QY20K5起重机具有高起重能力、安全可靠、灵活性强、操(cāo)控简便等优点，适用(yòng)于各种工(gōng)地起重作业需求。

XCMG QY20K5 crane has the following advantages: 1. high load capacity: XCMG QY20K5 crane has a lifting capacity of 20 tons, which can cope with most of the lifting needs. 2. excellent safety performance: XCMG QY20K5 crane is equipped with perfect safety protection devices, such as overweight, overload, overheight, over the limit, and other protective devices, to ensure that construction is safe and reliable. 3. flexible: XCMG QY20K5 crane can be rotated 360 degrees, equipped with multi-section folding jib to complete complex lifting operations in a narrow workspace, and improve the efficiency of the work. 4. Strong flexibility: XCMG QY20K5 crane can be rotated 360 degrees, equipped with multi-segment folding jib, able to complete complex lifting operations in a small workspace, improve construction efficiency.4. Simple operation: XCMG QY20K5 crane is hydraulically driven, equipped with an operating platform, easy and convenient to operate, and you can quickly familiarize yourself with operating skills.5. Low transportation costs: XCMG QY20K5 crane is lightweight and easy to operate. Crane weight is light, easy to disassemble and transport, reduce transportation costs. 6. low energy consumption: XCMG QY20K5 crane adopts advanced hydraulic system and electronic control system, with low energy consumption, energy saving and environmental protection. 7. strong reliability: XCMG QY20K5 crane is made of high-strength steel, solid structure, good load-bearing performance and stability, and can adapt to a variety of complex environments. It can adapt to the operational needs of various complex environments. In short, XCMG QY20K5 crane has the advantages of high lifting capacity, safety and reliability, flexibility, easy to maneuver, etc., applicable to a variety of site lifting needs.