I work with ally a fair bit and i am ordering some material tomorrow. The chances are you wont get 60mm but it will be a English equivalent probably 2 3/8 or 2 1/2 inch pending what they stock which can vary. Many stockist only keep the major sizes on the shelf like 2.5 inches or 3 but it does vary as i mentioned.
If you want me to look at at for you it would probably be a full length at 4 mtrs but there is always a chance they may have a decent length offcut.