3ASTM F1216--09. Standard practice for rehabilitation of existing pipelines and conduits by the inversion and curing of a resinimpregnated tube. ASTM, Philadelphia, PA, USA.
4ASTM D 790--03. Standard test methods for flexural properties of unreinforeed and reinforced piasties and electrical insulating materials. ASTM, Philadelphia, PA, USA.
5ASTM D 638--03. Standard Test Method of Tensile Properties of Plastics. ASTM, Philadelphia, PA, USA.