We use 6 metre lengths as standard with Storz fittings. These fittings hook up very quickly so we can use various lengths of hoses to get to the relationship points. Remember to talk to our specialist crew who will specify the quantities of hoses and fittings throughout a site survey. https://industrialboilersuk00098.ttblogs.com/17917545/5-tips-about-industrial-boilers-uk-you-can-use-today