We use 6 metre lengths as conventional with Storz fittings. These fittings link very quickly so we can easily use a number of lengths of hoses to reach the connection details. Please talk to our expert group who will specify the portions of hoses and fittings during a web site https://industrial-boiler-hire09864.blogoscience.com/44623864/5-easy-facts-about-industrial-boilers-uk-described