1 It's called corner jionts 2 The material is aluminum. 3 The material we used 6082

Guangzhou Ruiying Stage Equipment Co,Ltd is a professional manufacturer specializing in producing flight case,aluminum trusses,tents and moving stages.The base of the factory is located in zhonghe industrial Zone,Baiyun,Guangzhou,covering an area of over 6000 square meters with mordernizeed workshops.

  

3-way corner 90 degree