втулка алюминиевая ферма всех видов

Our aluminum trss is very light , but very solid,1) method of connection:2) specifiction:main tube is 50*3.0mm ,the brace tube is 20*2.0mmmain tube is 50*2.0mm ,the brace tube is 20*2.0mm main tube is 50*1.2mm ,the brace tube is 20*1.0mmTheconical couplertruss ( spigot aluminum truss ) size is 150mm*150mm, 200mm*200mm, 250mm*250mm, and 300*300mm, is very popularin market ,with long-span, quick building,which can build the maximal space length is 15m , Which main used for small mobile outdoor performances, the indoor exhibition,concert and so on .150mm, 200mm, 250mm series:main tube is 32*1.5mm ,the brace tube is 12*1.2mm300mm, 400mmseries:main tube is 50*2.0mm ,the brace tube is 20*2.0mm