Nice set of pipes!

I've passed these pipes a few times of late, when passing through to t'other side 'o' Keighley on my way to Haworth or the KWVR railway at Ingrow. They catch my eye every time I drive past, and I've no idea what they're doing at the side of the road or what their purpose/history is. Think they look pretty cool though, so seeing as I was in Keighley at lunchtime today I thought I'd stop and take a couple of pics. They're big old rusty things - but I like them!
Thank you again for all your lovely comments yesterday :))