B
Budd
How comes some pipe fittings/ tube is in metric and some is in imperial like 3/8 drinking line? Many thanks
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Imperial and metric
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B
Budd
Used for drinking water filters ect
Times change, imperial is changed over to metric
some air lines are still done in imperial, as is air con i think.
some air lines are still done in imperial, as is air con i think.
M
Mike Jackson
It's so us old boys don't feel left out.
A
albatross
It's historic and times change. British Empire and USA were all imperial but we have gone metric as we are closer linked to Europe these days. Steel threaded pipe does have modern metric names but the old names stick.
3/4" is officially called DN20 as its 20mm nominal internal diameter. (DN=diameter nominal. French.)
Diameter Nominal (mm) To Nominal Pipe Size (inches)
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