In April 2014, Shanghai Zhenhua building for Brazil BrasFELS shipyard of the world's largest 2000 ton gantry crane was officially put into use. The gantry height of 148 meters, equivalent to 45 storeys high; lifting tonnage of 2000 tons, lifting the 1400 one-time successful family car, crane lifting height and tonnage of both to refresh the world record. In the lifting assembly, the lifting of the main beam is the most difficult part of the whole process. The main girder gantry crane lifting capacity of about 4000 tons, to upgrade the main beam to a height of 148 meters, large surface area, high risk. To ensure smooth progress, Zhenhua heavy industry delivery team arranges personnel real-time monitoring at 16 wind collecting points and sliding cars at the scene, and sets up the overall coordination of the upgrading headquarters. The gantry crane through function test and load test after two weeks of American Society issued a license to use, and for the first time in the hoisting task performed well.