Abstract: In order to ensure production efficiency and quality during the coronavirus,the domestic Gintune flux cored welding wire was introduced into the shipbuilding for the first time.In the article,Q690ME was used as the base metal,and Gintune GFR-110K3 was used as the welding consumable,then FCAW was conducted on the thick base metal with X groove.Based on the good results of various mechanical properties such as tensile test,bending test,impact test,macroscopic test and hardness test,it not only provides strong technical support for subsequent on-site construction,but also proves the weldability and popularizable of this domestic welding wire on 690 grade steel.