300*300mm spigot-type square truss 1.large loading,corrosion resistant 2.Light weight ... .15-25 service year 200*200mm spigot-type square truss Shape:Can be Square / Triangle / Layer /Circleusage:We can design ... ,CE ISO9001 Size available : 200*200mm,250*250mm ,300*300mm ,350*350mm ,400*400mm ,289*289mm,389*389mm,400* ... contact me for more details.Mobil no. 13610346332 300*300mm spigot-type square truss