QTZ50(4810) topkit tower crane from DAHAN China

　1.With 56,000 sets of market volume and excellent reputation,  Dahan tower crane ranks the first place in China tower crane industry in the past decades. Dahan always adheres to the value that supply the most valuable tower crane and service for the customer, with the highest cost performance in the industry.
　　
　　2.Dahan tower crane owns the leading technology R&D team, the product quality passed several experiments with strict testing.Otherwise,Dahan has 15 years of production technology and rich experiences in quality management.Till now, over 100 national technology patents of tower crane have been put into use already.
　　
　　3.In order to guarantee the reliability of tower crane quality and reduce the cost,all raw materials are directly supplied by famous brands like Baosteel and Wisco. Raw materials for main parts such as standard section main limbs,tower caps adopt Q345B steel ,thus the tensile strength increased by 30% and the tower crane becomes more safe and reliable.
　　
　　4.Dahan tower crane is the enterprise which firstly started to use the robot welding lines. At present, we have a fully automatic robot welding production line for mast sections fabrication made up by more than 100 welding robots.The production line is composed with automatic material preparation, welding and maching. All main parts of Dahan tower crane use robot welding, with the most advance carbon dioxide mixed with argon gas shielded welding, it has deep depth of fusion, high quality of welding and stable performance.