... 3. insulation 4. long using life frp grp pipe is usually used as beam,armrest,fence,and handrail, and it could be ... CharacteristicApplicationfrp grp pipe can be applied as beams,handrail, armrest,ladder,measuring instrument etc.Pultruded fiberglass pipe is usually used ... as beam,armrest,fence,and handrail, and it could be used in ...