Fuel line-is this ok??

From my 22 gallon fuel cell in back to the firewall I run a double set of Aluminum fuel lines held in place along side the frames rails with clean rubber coated metal holders and of course during its run it has AN fittings to such things as the electric fuel pump and regulator as well as an inline fuel filter. No glass, no rubber and no problems after being on the vehicle 20 years. You just have to know what size fuel lines to run whether 3/8 or 1/2 inch