Understanding BSP Sizes

When members of the public call, they sometimes get confused about the BSP sizes that we mention on our site.
It's quite understandable as BSP sizes are not the same as true Imperial sizes (often people think it means British Standard Plumbing when in fact it means British Standard Pipe)
To help we have written a concise guide to the most commonly used BSP sizes in the sanitary industry
You can find it here: Understanding BSP Sizes