... by the thermal pultrusion moulding machine. The pultruded fiberglass round tube retains high strength property of glass fiber. At the ... spread rating of 25 or less per ASTM E84.Fiberglass Round Tube Features○ Light weight, only 70% weight of aluminum, ... available, cutting, drilling, turning, polishing, tapping, etc.Fiberglass Round Tube Specification Fiberglass Round Tube O.Dia x I.DiaΦDxd mmO.Dia x ...