... pultruded profiles include round tube, rod, angle, I-beam, T-shape,channel, square tube, rectangular tube, quincuncial tube, flat sheet etc. ... , size stability, high strength, and thermal/electric non-conductivity.Each shape is available in a range of ... Safe · Low Electrical & Thermal Conductivity· Dimensional Stability · Non-Magnetic Electromagnetic · Fiberglass frp grp Pultruded square tube