Oxygen and LPG are both flammable. Steel is not. Therefore it is best that oxygen and LPG are not sealed with plastic or wood.
Some are metal, some are plastic, and some are wooden.
If by plastic you mean a material made from plastic as opposed to plastic deformation of say steel for example, then yes, they are synthetic.
cement paint plastic steel nylon
Accuracy has more to do with the measurement lines on the ruler than the material. In terms of making measurements , however, a steel ruler has several advantages to a plastic ruler of the same accuracy. For starters, steel rulers are often thinner than plastic rulers, positioning the measurement lines closer to the paper. As well as this, many steel rulers feature a backing made of a gripping material such as cork, which keeps the ruler firmly planted while drawing lines and making measurements. Lastly, the measurement lines on steel rulers are frequently embedded into the metal, whereas plastic rulers tend to have the lines painted on. After a while, these marks can be worn away, reducing the accuracy and readability of a plastic ruler.
Because the gasses are under terrific pressure - to enable the 'user' to get the maximum time form the cylinder. The high pressure means that wood or plastic aren't suitable for their construction, as they cannot take the extreme force of the pressurised gas.EDIT: apparently LPG tanks can be made of plastic !
Steel + Oxygen = Steel Oxide
No, steel is a metal.
they are plugged into a stainless steel tube between the plastic intake and the valve cover if its the 4 cyl the v6 injectors are inside the plastic plenum and sealed you cant access them at all
they are better for enviroment because they last longer than plastic and are not thrown away as aften as plastic bottles
Using plastic over steel wings on a windmill is a good idea because the steel will eventually rust. The steel is heavier and the motor on the windmill will have to work harder to turn steel, than plastic. The cost of the plastic is actually a little more than steel, though.
Steel, fiberglass, carbon fiber, stainless steel, plastic, rubber. Depending on what manufacturer, 'trim' of car, and what body part. For example a car often has steel doors, (safer in a collision..... if you got hit would you not want to be sitting inside a steel door?), and fiberglass or plastic bumpers
Steel is more dense than oxygen.
Some are metal, some are plastic, and some are wooden.
Clothes hangers are usually steel, but some are made of aluminum. Construction hangers can be steel, galvanized steel, copper, or other metals.
A plastic spatula is not a conductor, as electricity does not transfer through plastic. A metal spatula is a conductor, since the metal used in kitchenware is often steel (stainless is the most popular), and steel is a conductor. While a better conductor would be copper, aluminum, silver, or gold, steel does conduct electricity.
plastic is non corrosive therefor creates a barrier between the iron and moisture/salt/oxygen, all of which would corrode iron or steel to form iron oxide (rust)
It stops the steel from rusting by not letting oxygen or water touch the steel, as oxygen and water need to present for steel to rust.