These are 34mm (One inch) with an internal diameter of 27mm and an outside diameter of 34mm plumbing pipe fittings and plumbing pipe lengths in Galvanised finish threaded as 1″ BSTP
These are 34mm (One inch) with an internal diameter of 27mm and an outside diameter of 34mm plumbing pipe fittings and plumbing pipe lengths in Galvanised finish threaded as 1″ BSTP