... & Thermal Conductivit Our FRP pultruded profiles include round tube, rod, angle, I-beam, T-shape,channel, square tube, rectangular ... special uses, custom shapes are also available. Features for frp pultruded profiles:· Light Weight High Strength · Insulating Values and ... Electrical & Thermal Conductivity· Dimensional Stability · Non-Magnetic Electromagnetic · Fiberglass frp grp Pultruded square tube