... ,such as:square tubes,rectangular tubes,I-beams,e GRP Guarddrail 1) The GRP Guarddrail is mainly assembled with FRP profiles,such ... as:squaretubes,rectangular tubes,I-beams,etc.2) The GRP Guarddrail can be connected with stainless steel screws.3) Not ... .5) We also can design and produce other kinds of GRP Guarddrailaccording to customer's requirements.