One piece gas line

[tsubaki]

Shouldn't it be rubber (approved) hose from the tank to the fuel pump, then hard pipe to the carb with a fuel filter inbetween, connected with short rubber hoses?
Or am I missing something??
The line where the rubber hose is should carry a fuel filter, some have different size inlet and exit nipples.
Having a water seperator between the tank and fuel pump should be installed also.
Ya'll help correct me............................