We use six metre lengths as typical with Storz fittings. These fittings hook up very quickly so we can use multiple lengths of hoses to get to the relationship points. You should speak to our specialist group who can specify the quantities of hoses and fittings during a web-site study. https://devinhtbjr.tribunablog.com/an-unbiased-view-of-industrial-boilers-uk-52511870