... and high strength 3. insulation 4. long using life frp fiberglass pipe is usually used as beam,armrest,fence,and handrail ... fiberglasspipe can be applied as beams,handrail, armrest,ladder,measuring instrument etc. Pultruded fiberglass pipe is usually used as beam,armrest,fence ... Applicationfrp grp pipe can be applied as beams,handrail, armrest,ladder,measuring instrument etc.