... tube -Various kinds of profile -Corrosion resistant -Light weight -High strength for ladder and handrail Fiberglass reinforced polymer / Fiberglass reinforced ... structural construction, chemical projects, water treatment projects for supports and beams, Specialling the 50mm square tubes ... FRP square tube is follows:1, Corrosion Resistant2, Light Weight, High Strength and Impact & Fatigue Resistant.3, ...