BS EN ISO 9001 BSI
  BS EN ISO 14001 BSI
  BS 4514: 2001 Unplasticized PVC soil and ventilating pipes of 82.4mm minimum mean outside diameter, and fittings and accessories of 82.4mm and of other sizes. Specification
  BS 5255: 1989 Specification for thermoplastics waste pipe and fittings
  BS 7291: Part 1: 2006 Thermoplastics pipes and associated fittings for hot and cold water for domestic purposes and heating installations in buildings. General requirements
  BS 7291: Part 3: 2006 Thermoplastics pipes and associated fittings for hot and cold water for domestic purposes and heating installations in buildings. Specification for cross-linked polyethylene pipes and fittings
  BS EN 12200: Part 1: 2000 Plastics rainwater piping systems for above ground external use. Unplasticized poly (vinyl chloride) (PVC-U). Specifications for pipes, fittings and the system
  BS EN 1329: Part 1: 2000 Plastics piping systems for soil and waste discharge (low and high temperature) within the building structure. Unplasticized PVC. Specifications for pipes, fittings and the system
  BS EN 1401: Part 1: 1998 Plastics piping systems for non-pressure underground drainage and sewerage. Unplasticized poly(vinylchloride) (PVC-U). Specifications for pipes, fittings and the system
  BS EN 1451: Part 1: 2000 Plastics piping systems for soil and waste discharge (low and high temperature) within the building structure. Polypropylene (PP). Specifications for pipes, fittings and the system
  BS EN 1455: Part 1: 2000 Plastics piping systems for soil and waste (low and high temperature) within the building structure. Acrylonitrile-butadiene-styrene (ABS). Specifications for pipes, fittings and the system
  BS EN 1462: 2004 Brackets for eaves gutters. Requirements and testing
  BS EN 1566: Part 1: 2000 Plastics piping systems for soil and waste discharge (low and high temperature) within the building structure. Chlorinated PVC. Specification for pipes, fittings and the system
  BS EN 607: 2004 Eaves gutters and fittings made of PVC-U. Definitions, requirements and testing