Pipework Materials and Sizes Quiz

What is the minimum copper content of phosphorus de-oxidised copper used in copper tubes?

• 85%

• 90%

• 95%

• 99.9%

Which grade of copper tube is used for underground water services and micro-bore central heating systems?

• R290

• R250

• R220

• R300

Which grade of Low Carbon Steel pipe is the most common grade used in plumbing installations?

• Light

• Medium

• Heavy

• Extra Heavy

Which type of plastic pressure pipe is light and flexible, ideal for carrying wholesome, potable water?

• Polypropylene

• Polybutylene

• High density polyethylene

• Medium density polyethylene

What is the recommended maximum exposure of blue MDPE pipe when it enters a dwelling?

• 200mm

• 50mm

• 100mm

• 150mm

Which type of plastic sanitary pipe is mainly used for above and below ground sanitation systems, soil and vent pipes, waste pipes, and overflows?

• ABS

• Polypropylene

• PVCmu

• PVCu

What is the size of PVCu pipes used for soil pipes, vent pipes, and below ground drainage systems?

• 150mm

• 110mm

• 50mm

• 40mm

Which type of plastic sanitary pipe is much tougher than PVCu and possesses good impact and mechanical strength?

• PVCmu

• PVCu

• Polypropylene

• ABS

What is the main advantage of using polybutylene pipe in plumbing installations?

• High temperature/pressure resistance

• Low noise and thermal transmission

• Smooth internal bore for better flowrate

• Impervious barrier to prevent air infiltration

Which type of copper tube is hard tempered and very unsuitable for bending?

• R300

• R290

• R250

• R220