| PIPES | AALBERTS INTEGRATED PIPING SYSTEMS LIMITED |
| ALIAXIS UK |
| BLÜCHER UK LTD |
| GEORGE FISCHER SALES LTD |
| GUTTERMASTER LTD |
| Hep2O PUSH-FIT PLUMBING |
| HEPWORTH CLAY & TERRACOTTA |
| LINDAB LTD |
| MUELLER EUROPE LTD |
| OSMA |
| PAM BUILDING |
| TATA STEEL UK |
| UPONOR PLUMBING SOLUTION |
| WAVIN |
| WAVIN UNDERFLOOR HEATING & COOLING |
| PIPES ABS | ALIAXIS UK |
| GEORGE FISCHER SALES LTD |
| PIPES Aggressive Media Handling / Aggressive Susbtances | ALIAXIS UK |
| GEORGE FISCHER SALES LTD |
| PIPES Air Conditioning Systems | AALBERTS INTEGRATED PIPING SYSTEMS LIMITED |
| ALIAXIS UK |
| GEBERIT SALES LTD PIPING SYSTEMS |
| GEORGE FISCHER SALES LTD |
| MUELLER EUROPE LTD |
| PIPES Aluminium | GUTTERMASTER LTD |
| PIPES Anaerobic Digestion Plants | ALIAXIS UK |
| PIPES Biogas Transport | ALIAXIS UK |
| PIPES Boiler Condensate Drains | GEBERIT SALES LTD PIPING SYSTEMS |
| PIPES Building Services | ALIAXIS UK |
| GEORGE FISCHER SALES LTD |
| HEPWORTH CLAY & TERRACOTTA |
| UPONOR PLUMBING SOLUTION |
| PIPES Carbon Steel | AALBERTS INTEGRATED PIPING SYSTEMS LIMITED |
| GEBERIT SALES LTD PIPING SYSTEMS |
| TATA STEEL UK |
| PIPES Cast Iron | ALUMASC WATER MANAGEMENT SOLUTIONS |
| PAM BUILDING |
| PIPES Chemical Process Lines | ACO TECHNOLOGIES PLC - BUILDING DRAINAGE |
| ALIAXIS UK |
| GEBERIT SALES LTD PIPING SYSTEMS |
| GEORGE FISCHER SALES LTD |
| PIPES Chemical Resistant | ACO TECHNOLOGIES PLC - BUILDING DRAINAGE |
| ALIAXIS UK |
| BLÜCHER UK LTD |
| GEORGE FISCHER SALES LTD |
| HEPWORTH CLAY & TERRACOTTA |
| PIPES Chemical Waste Drainage Systems | ACO TECHNOLOGIES PLC - BUILDING DRAINAGE |
| ALIAXIS UK |
| BLÜCHER UK LTD |
| GEBERIT SALES LTD PIPING SYSTEMS |
| GEORGE FISCHER SALES LTD |
| HEPWORTH CLAY & TERRACOTTA |
| PIPES Chilled Water | AALBERTS INTEGRATED PIPING SYSTEMS LIMITED |
| ALIAXIS UK |
| GEORGE FISCHER SALES LTD |
| REHAU BUILDING SOLUTIONS |
| PIPES Cold Water Potable | AALBERTS INTEGRATED PIPING SYSTEMS LIMITED |
| ALIAXIS UK |
| GEBERIT SALES LTD PIPING SYSTEMS |
| GEORGE FISCHER SALES LTD |
| Hep2O PUSH-FIT PLUMBING |
| OSMA |
| POLYPIPE BUILDING PRODUCTS |
| UPONOR PLUMBING SOLUTION |
| WAVIN |
| PIPES Composite Multilayered Polyethylene | ALIAXIS UK |
| PIPES Composite PEXc/AL | WAVIN |
| PIPES Compressed Airlines | ALIAXIS UK |
| GEBERIT SALES LTD PIPING SYSTEMS |
| GEORGE FISCHER SALES LTD |
| PIPES Cooling Systems | GEORGE FISCHER SALES LTD |
| MUELLER EUROPE LTD |
| PIPES Copper | GEBERIT SALES LTD PIPING SYSTEMS |
| MUELLER EUROPE LTD |
| PIPES Corrosive Media Drainage | ALIAXIS UK |
| PIPES CPVC (PVC-C /PVCc) | ALIAXIS UK |
| GEORGE FISCHER SALES LTD |
| PIPES CuNiFe | GEBERIT SALES LTD PIPING SYSTEMS |
| PIPES De-Ionised Water | ALIAXIS UK |
| GEORGE FISCHER SALES LTD |
| PIPES Demineralised Water | GEORGE FISCHER SALES LTD |
| PIPES Disinfectant Solutions | GEBERIT SALES LTD PIPING SYSTEMS |
| PIPES Dual Containment Systems Pipe in Pipe | ALIAXIS UK |
| GEORGE FISCHER SALES LTD |
| PIPES Flexible | AALBERTS INTEGRATED PIPING SYSTEMS LIMITED |
| GEBERIT SALES LTD PIPING SYSTEMS |
| GEORGE FISCHER SALES LTD |
| Hep2O PUSH-FIT PLUMBING |
| OSMA |
| REHAU BUILDING SOLUTIONS |
| UPONOR PLUMBING SOLUTION |
| WAVIN |
| PIPES Flexible Barrier Pipe AGREMENT CERTIFICATE HOLDERS | Hep2O PUSH-FIT PLUMBING |
| WAVIN UNDERFLOOR HEATING & COOLING |
| PIPES Flexible Barrier Pipe BS 7291 Parts 1 and 3 | Hep2O PUSH-FIT PLUMBING |
| UPONOR PLUMBING SOLUTION |
| PIPES Flexible Barrier Pipe BS EN ISO 21003 | Hep2O PUSH-FIT PLUMBING |
| PIPES Flexible Barrier Pipe Composite | WAVIN |
| PIPES Flexible Barrier Pipe DIN 16892 | AALBERTS INTEGRATED PIPING SYSTEMS LIMITED |
| PIPES Flexible Barrier Pipe DIN 4726 | GAIA CLIMATE SOLUTIONS LTD |
| UPONOR PLUMBING SOLUTION |
| WAVIN UNDERFLOOR HEATING & COOLING |
| PIPES Flexible Barrier Pipe DIN 4727 | WAVIN UNDERFLOOR HEATING & COOLING |
| PIPES Flexible Barrier Pipe PE Polyethylene Pipe | ALIAXIS UK |
| WAVIN |
| WAVIN UNDERFLOOR HEATING & COOLING |
| PIPES Flexible Barrier Pipe PE/AL | ALIAXIS UK |
| WAVIN |
| PIPES Flexible Barrier Pipe PE/RT DIN 16837 | GAIA CLIMATE SOLUTIONS LTD |
| PIPES Flexible Barrier Pipe PE/RT DIN 4726 | GAIA CLIMATE SOLUTIONS LTD |
| PIPES Flexible Barrier Pipe PE/RT Multilayered | GAIA CLIMATE SOLUTIONS LTD |
| PIPES Flexible Barrier Pipe PEX P-EX | AALBERTS INTEGRATED PIPING SYSTEMS LIMITED |
| REHAU BUILDING SOLUTIONS |
| UPONOR PLUMBING SOLUTION |
| PIPES Flexible Barrier Pipe Polybutylene PB | Hep2O PUSH-FIT PLUMBING |
| WAVIN UNDERFLOOR HEATING & COOLING |
| PIPES Flexible Barroer Pipes | WAVIN |
| PIPES Flexible BS 6920 | GEORGE FISCHER SALES LTD |
| PIPES Flexible BS 7291 Class S Kitemarked | Hep2O PUSH-FIT PLUMBING |
| UPONOR PLUMBING SOLUTION |
| PIPES Flexible BS 7291 Part 1 & 3 Class S | UPONOR PLUMBING SOLUTION |
| PIPES Flexible BS 7291 Part 2 Kitemarked | Hep2O PUSH-FIT PLUMBING |
| PIPES Flexible BS 7291 Parts 1 and 2 Kitemarked | Hep2O PUSH-FIT PLUMBING |
| PIPES Flexible BS EN ISO 15876 Kitemarked | Hep2O PUSH-FIT PLUMBING |
| PIPES Flexible DVGW Approved | WAVIN |
| PIPES Flexible EN ISO 527 | UPONOR PLUMBING SOLUTION |
| PIPES Flexible Hot and Cold Water | AALBERTS INTEGRATED PIPING SYSTEMS LIMITED |
| GEBERIT SALES LTD PIPING SYSTEMS |
| GEORGE FISCHER SALES LTD |
| Hep2O PUSH-FIT PLUMBING |
| OMNIE UNDERFLOOR HEATING |
| OSMA |
| REHAU BUILDING SOLUTIONS |
| UPONOR PLUMBING SOLUTION |
| WAVIN |
| PIPES Flexible KIWA Approved | WAVIN |
| PIPES Flexible Metal Tube | AALBERTS INTEGRATED PIPING SYSTEMS LIMITED |
| GEBERIT SALES LTD PIPING SYSTEMS |
| PIPES Flexible Oxygen Diffusion Tight | GEBERIT SALES LTD PIPING SYSTEMS |
| REHAU BUILDING SOLUTIONS |
| UPONOR PLUMBING SOLUTION |
| WAVIN UNDERFLOOR HEATING & COOLING |
| PIPES Flexible PE-X | AALBERTS INTEGRATED PIPING SYSTEMS LIMITED |
| GEBERIT SALES LTD PIPING SYSTEMS |
| REHAU BUILDING SOLUTIONS |
| UPONOR PLUMBING SOLUTION |
| PIPES Flexible Pipe in Pipe | GEBERIT SALES LTD PIPING SYSTEMS |
| Hep2O PUSH-FIT PLUMBING |
| REHAU BUILDING SOLUTIONS |
| UPONOR PLUMBING SOLUTION |
| PIPES Flexible Plated Metal Connections | UPONOR PLUMBING SOLUTION |
| PIPES Flexible Polypropylene | GEORGE FISCHER SALES LTD |
| PIPES Flexible Push-Fit Press-Fit Systems | AALBERTS INTEGRATED PIPING SYSTEMS LIMITED |
| GEORGE FISCHER SALES LTD |
| Hep2O PUSH-FIT PLUMBING |
| OSMA |
| UPONOR PLUMBING SOLUTION |
| WAVIN |
| PIPES Flexible WRAS Approved | AALBERTS INTEGRATED PIPING SYSTEMS LIMITED |
| GEORGE FISCHER SALES LTD |
| Hep2O PUSH-FIT PLUMBING |
| OSMA |
| REHAU BUILDING SOLUTIONS |
| UPONOR PLUMBING SOLUTION |
| WAVIN |
| PIPES Flexible WRc Approved | WAVIN |
| PIPES Foodstuff Distribution | ALIAXIS UK |
| GEORGE FISCHER SALES LTD |
| REHAU BUILDING SOLUTIONS |
| PIPES Fuel / Oil Transfer | ALIAXIS UK |
| GEBERIT SALES LTD PIPING SYSTEMS |
| PIPES Gas Distribution | ALIAXIS UK |
| GEBERIT SALES LTD PIPING SYSTEMS |
| PIPES Hand Bendable | GEORGE FISCHER SALES LTD |
| UPONOR PLUMBING SOLUTION |
| PIPES Hazardous Chemical | ALIAXIS UK |
| GEORGE FISCHER SALES LTD |
| PIPES HDPE | ALIAXIS UK |
| GEBERIT SALES LTD PIPING SYSTEMS |
| GEORGE FISCHER SALES LTD |
| PIPES Heating Applications | AALBERTS INTEGRATED PIPING SYSTEMS LIMITED |
| GAIA CLIMATE SOLUTIONS LTD |
| GEBERIT SALES LTD PIPING SYSTEMS |
| GEORGE FISCHER SALES LTD |
| Hep2O PUSH-FIT PLUMBING |
| UPONOR PLUMBING SOLUTION |
| PIPES High Temperature Fluids | ALIAXIS UK |
| GEORGE FISCHER SALES LTD |
| PIPES High Temperature Resisting | ALIAXIS UK |
| GEORGE FISCHER SALES LTD |
| PIPES Hot and Cold Water | AALBERTS INTEGRATED PIPING SYSTEMS LIMITED |
| ALIAXIS UK |
| GEBERIT SALES LTD PIPING SYSTEMS |
| GEORGE FISCHER SALES LTD |
| Hep2O PUSH-FIT PLUMBING |
| OMNIE UNDERFLOOR HEATING |
| REHAU BUILDING SOLUTIONS |
| UPONOR PLUMBING SOLUTION |
| WAVIN |
| PIPES Hot and Cold Water Pressure Supply | AALBERTS INTEGRATED PIPING SYSTEMS LIMITED |
| GEORGE FISCHER SALES LTD |
| Hep2O PUSH-FIT PLUMBING |
| UPONOR PLUMBING SOLUTION |
| WAVIN |
| PIPES Hot Water | ALIAXIS UK |
| GEORGE FISCHER SALES LTD |
| PIPES HPPE | ALIAXIS UK |
| GEORGE FISCHER SALES LTD |
| POLYPIPE BUILDING PRODUCTS |
| PIPES Industrial Applications | AALBERTS INTEGRATED PIPING SYSTEMS LIMITED |
| ALIAXIS UK |
| GEBERIT SALES LTD PIPING SYSTEMS |
| GEORGE FISCHER SALES LTD |
| PIPES Laboratory Waste | ACO TECHNOLOGIES PLC - BUILDING DRAINAGE |
| ALIAXIS UK |
| BLÜCHER UK LTD |
| GEBERIT SALES LTD PIPING SYSTEMS |
| GEORGE FISCHER SALES LTD |
| PIPES Large Diameter Pipes | ALIAXIS UK |
| PIPES LDPE | POLYPIPE BUILDING PRODUCTS |
| PIPES Malleable Iron | GEORGE FISCHER SALES LTD |
| PIPES Marine Environment | ALIAXIS UK |
| BLÜCHER UK LTD |
| GEBERIT SALES LTD PIPING SYSTEMS |
| GEORGE FISCHER SALES LTD |
| PIPES MDPE | ALIAXIS UK |
| GEORGE FISCHER SALES LTD |
| OSMA |
| POLYPIPE BUILDING PRODUCTS |
| WAVIN |
| PIPES Monitoring Pipes | GEORGE FISCHER SALES LTD |
| PIPES Multilayered (ML) | AALBERTS INTEGRATED PIPING SYSTEMS LIMITED |
| ALIAXIS UK |
| GEORGE FISCHER SALES LTD |
| UPONOR PLUMBING SOLUTION |
| WAVIN |
| PIPES Pharmaceutical Applications | ALIAXIS UK |
| BLÜCHER UK LTD |
| GEORGE FISCHER SALES LTD |
| PIPES Plastic Drainage | ALIAXIS UK |
| GEBERIT SALES LTD PIPING SYSTEMS |
| GEORGE FISCHER SALES LTD |
| OSMA |
| PIPES Polyethylene PE | AALBERTS INTEGRATED PIPING SYSTEMS LIMITED |
| ALIAXIS UK |
| GEBERIT SALES LTD PIPING SYSTEMS |
| GEORGE FISCHER SALES LTD |
| WAVIN |
| PIPES Polypropylene | ALIAXIS UK |
| GEORGE FISCHER SALES LTD |
| PIPES Power Generation Plants | ALIAXIS UK |
| GEORGE FISCHER SALES LTD |
| PIPES Pre-Insulated | AALBERTS INTEGRATED PIPING SYSTEMS LIMITED |
| ALIAXIS UK |
| GEBERIT SALES LTD PIPING SYSTEMS |
| GEORGE FISCHER SALES LTD |
| REHAU BUILDING SOLUTIONS |
| UPONOR PLUMBING SOLUTION |
| WAVIN |
| PIPES Precast Concrete | ACO TECHNOLOGIES PLC - WATER MANAGEMENT |
| FORTERRA BUILDING PRODUCTS LIMITED |
| PIPES Purpose Made | GEORGE FISCHER SALES LTD |
| PIPES PVC-u | ALIAXIS UK |
| GEORGE FISCHER SALES LTD |
| POLYPIPE BUILDING PRODUCTS |
| PIPES PVDF | GEORGE FISCHER SALES LTD |
| PIPES Radioactive Wastes | ALIAXIS UK |
| PIPES Salt Water Seawater Corrosion Resistant | ALIAXIS UK |
| GEBERIT SALES LTD PIPING SYSTEMS |
| GEORGE FISCHER SALES LTD |
| PIPES Saturated Steam Applications | GEBERIT SALES LTD PIPING SYSTEMS |
| PIPES Secondary Containment | ALIAXIS UK |
| GEORGE FISCHER SALES LTD |
| PIPES Secondary Cooling and Refrigeration | AALBERTS INTEGRATED PIPING SYSTEMS LIMITED |
| ALIAXIS UK |
| GEORGE FISCHER SALES LTD |
| PIPES Stainless Steel | AALBERTS INTEGRATED PIPING SYSTEMS LIMITED |
| ACO TECHNOLOGIES PLC - BUILDING DRAINAGE |
| BLÜCHER UK LTD |
| GEBERIT SALES LTD PIPING SYSTEMS |
| GUTTERMASTER LTD |
| PIPES Stainless Steel Tube | AALBERTS INTEGRATED PIPING SYSTEMS LIMITED |
| PIPES Steel | TATA STEEL UK |
| PIPES Tarmac Collector Pipes | REHAU BUILDING SOLUTIONS |
| PIPES Technical Gases | GEBERIT SALES LTD PIPING SYSTEMS |
| PIPES Twin Wall | HOWARTH TIMBER GROUP |
| PIPES Underfloor Heating | EPIC INSULATION LTD |
| GAIA CLIMATE SOLUTIONS LTD |
| Hep2O PUSH-FIT PLUMBING |
| OMNIE UNDERFLOOR HEATING |
| OSMA |
| REHAU BUILDING SOLUTIONS |
| WAVIN UNDERFLOOR HEATING & COOLING |
| PIPES Vacuum Lines | ALIAXIS UK |
| GEBERIT SALES LTD PIPING SYSTEMS |
| GEORGE FISCHER SALES LTD |
| PIPES Vitrified Clay | HEPWORTH CLAY & TERRACOTTA |
| PIPES Water Treatment Applications | ALIAXIS UK |
| GEORGE FISCHER SALES LTD |
| PIPES Zinc Plated Carbon Steel | GEBERIT SALES LTD PIPING SYSTEMS |
