... truss, we can do ladders truss, triangle truss, square truss. Usage: These truss projects can be used ... use in foreign country, and the other is screw truss which widely use in demestic.a) spigot ... 500*500mm, 500*600mm,520*760mm,600*760mmb) screw truss: 150*150mm,200*200mm,250*250mm,300* ... *thickness): 16*2mm, ,25*2mm30*2mmShape: Can be square, triagle, layer, circle;. Welcome to visit our factory. ...