The phrase "a system of tubes" is correct and usable in written English.
It can be used to describe a network or arrangement of tubes, often in a technical or scientific context.
Example: "The laboratory is equipped with a complex system of tubes that facilitates the flow of various gases during experiments."
Alternatives: "a network of tubes" or "a series of tubes".
So he designed a system of tubes running in a loop from a car radiator to the wheel wells.
With their cells linked by a system of tubes, shoots and holes, they all perform bizarre functions in a production line.
Then they rigged a system of tubes, similar to an IV, to feed the leaked mixture of olive oil and hydraulic fluid back into the tank.
With rubber, Vaucanson imagined he would be able to create a system of tubes to convey fluid around the body of his android; unfortunately, difficulties in preserving the elasticity of the resin, together with the need for intense secrecy while obtaining sufficient quantities -- only enough to fill a small package had been imported -- made the project unfeasible.
Tesla Motors and SpaceX CEO Elon Musk envisions the Hyperloop as the "fifth mode of transportation". It's a concept dreamed up by Musk that involves the delivery of people through a system of tubes maintained in a near-vacuum that connect major cities.
The lungs develop from a ventral hollow outgrowth of the gut, which is located just posterior to the pharyngeal region; the outgrowth branches into a right and left trunk that grow posteriorly beside the esophagus and then expand into hollow sacs, in lower terrestrial vertebrates, or into a system of tubes, in birds and mammals.
They might be (1) already purchased in a traditional way and stored in the home, office, hospital or place of business, (2) loaded into purchased cartridges similar to ink cartridges in an inkjet printer, (3) delivered by drones, or (4) sent through a system of underground tubes similar to the way water, gas, and other utilities are delivered today.
What Musk does seem to have had are informal discussions with White House officials about his proposal for an east coast Hyperloop, a system of underground vacuum tubes through which trains or pods could be shot at high speeds.
The PBR body consists of a system of vertical tubes made of clear PET (polyethylene terephthalate) tubes (8.9 cm diameter × 244 cm high) connected by 7.5 cm diameter schedule 40 PVC (polyvinyl chloride) pipe.
A system of pneumatic tubes whisks money from customers to a central cash office.
The movement feels akin to surfing, or being whooshed through a system of pneumatic tubes.
