BS ISO 15398. Specifications for thermoplastics covers & frames for manholes & inspection chambers used in non-traffic areas Adhesives, Pipework systems, Pipes, Plastics, Thermoplastic polymers, Unplasticized polyvinyl chloride, Polyvinylidene chloride, Acrylonitrile butadiene styrene, Styrene, Copolymers, Shear strength, Shear testing, High-temperature testing, Life (durability), Endurance testing, Conformity, Type testing, Production planning, Marking