... strength,light weight 2.Ladder step,51mm-45mm 3.Anti-corrosion 4.Low maintenance FRP Pultruded Ladder Tube,Ladder Step Use,Gear Tube The ... FRP pultruded ladder tube are a kind of fiberglass ... . Easy to design11. Good appearanceDetails of the FRP pultruded ladder tube:Specification:75mm*51mm (gear round tube) 36mm*25mm ...