... .0mmVice tube50*2.0mmDiagonal Tube32*2.0mm*AVAILABLE SHAPE ALUMINUM ROOF OF ROOF TRUSSSquare ,rectangle, triangle, layer, circle, arch, flat* ... Wide use in many situation*WIDE APPLICATION WITH THE ALUMINUM ROOF TRUSSPerformance stage, outdoor and indoor concert, exhibit and display ... staff and unite team3).Advanced technology of welding to make solid truss, advanced machine is the base facility, and ...