. Today's prices:
£55.22 for 3m of 54 mm £43.02 for 3m of 42 mm
+VAT but free delivery
I expect a plumber with an account would get a discount on that. BES also do larger size fittings. Most plumbing suppliers don't stock anything over 28 mm, occasionally 35 mm, but can get larger sizes in on order - however, not in 1m lengths.
If you find somewhere cheap please let me know - also if interested I might go halves on a larger purchase.
College engineering might be worth a call, but they are liable to be expensive.
Sorry - I should have clarified a bit. I need to connect this to a tank so I either need to find a 2" bulkhead fitting or I need some copper plate to make a flange - I'm running out of budget though :( - any ideas?