Most exhaust shops use either mild steel or stainless steel. IMC (Intermediate Metal Conduit) is thinner and lighter than RMC (Rigid Metal Conduit.) It’s also galvanized, so it is suitable for exhaust use. Even better is simply EMT (Electrical Metallic Tubing,) which has a thinner wall and no threaded connections.
Where is EMT conduit not allowed?
EMT shall not be used under the following conditions: Where subject to severe physical damage. For the support of luminaires or other equipment except conduit bodies no larger than the largest trade size of the tubing.
Where can EMT conduit be used?
EMT conduit is more affordable than IMC or GRC, but its thin walls are more easily punctured. It is most often used in dry interior spaces, but it can be used in damp locations with corrosion-resistant hardware and rain-tight fittings.
What kind of pipe can I use for exhaust?
Exhaust piping is usually made of steel, but can be aluminized steel tubing, or stainless steel, which lasts longer due to its corrosion resistance. Connections are generally made with clamps, gaskets, or welds. The muffler quiets the noise of the engine.
How many bends are allowed in conduit?
No section of conduit shall contain more than two 90-degree bends, or equivalent between pull points. For conduits with an internal diameter of 2 inches or less, the inside radius of a bend in conduit shall be at least 6 times the internal diameter.
How long will EMT conduit last outside?
Typical EMT Type conduit will resist rust for a few years. It is however inevitable that it will rust. On the other hand there have been times when the conduit has rusted on parts of its surface having been exposed to the outdoor elements for one or two seasons.
Is EMT allowed in wet locations?
EMT can be used in wet locations as long as the conduit is galvanized and you use all fittings that are identified for wet locations and protected from corrosion. EMT can be used in concrete as long as the fittings are identified for use. 358.10 Uses Permitted.
Is EMT conduit waterproof?
Only outdoor electrical conduit should be used outdoors. Water-resistant wire just resists water. It is not meant to be immersed in water. If your conduit or boxes fill up with water, it will short out and/or you will get leaks.
How much clearance do you need for exhaust?
In general, exhaust pipes should be at least 1.5 inches away from the fuel tank and additional clearance is preferable. If your vehicle model was never offered with a dual-exhaust system, you need to have the pipes custom bent at a competent exhaust shop.
What gauge steel is exhaust pipe?
most headers are 18 gauge steel , most exhaust is 16 gauge or thicker , same material unless you got stainless headers or tails .