Pick up the correct statement from the following?
Found an error? Read our corrections policy and submit a sourced correction below. You can also share a useful explanation in your own words.
A. All pipes and fittings are classified according to their diameters
B. The diameter of the pipes is the nominal diameter of internal bore
D. All pipes are measured along the centre line of the pipes in metres
Found an error? Read our corrections policy and submit a sourced correction below. You can also share a useful explanation in your own words.