What diameter is sink waste pipe?

40mm





Plastic waste pipe is available in 4 basic sizes (external diameter) for different plumbing uses: 21.5mm – for overflows such as cold water tank, cisterns etc. 32mm – for hand basin waste pipe. 40mm – for sink and bath waste pipe.

How do you measure a basin waste pipe?

Find the outside diameter of your pipe to the nearest millimetre, use a tape measure or vernier gauge. Then find this size down the left hand column, read across the four coloured columns on the right to find the group and description for your size pipe.

Is 32mm waste pipe the internal diameter?

There are at least two incompatible types of plastic waste pipe. The inside diameter of the pipe is 32mm and the outside diameter is 37mm.

What size is UK sink waste pipe?

Common Waste Pipe Sizes in the UK





32mm – Found under small hand basins and other low volume outlets. 40mm – Used under kitchen sinks and also bathroom showers/baths. 50mm – Less popular and usually found in commercial buildings, occasionally seen in larger residential dwellings.

What size is 32mm pipe?

Plastic Pipes Inch to Metric Sizing Guidelines

IMPERIAL METRIC
3/8″ 17.1mm 16mm
1/2″ 21.3mm 20mm
3/4″ 26.7mm 25mm
1″ 33.4mm 32mm

What is the internal diameter of 40mm waste pipe?

The internal and external diameter of “40mm” pipe varies according to material, fitting type etc. FloPlast solvent pipe has an internal diameter of 1.5” (38mm) and an external diameter of about 43mm.

What size pipe is used for kitchen sink drain?

Typically, a 1 ½ inch PVC pipe is used for sink drains, as it can adequately handle the water flow out of a kitchen sink.