EMT (Electrical Metallic Tubing) is ften made of galvanized steel,a thin-walled, lightweight steel conduit used to protect and route electrical wiring in buildings.Galvanized EMT conduit is very common because the galvanized coating provides good corrosion resistance. It helps protect the steel conduit from rust and degradation, especially in environments where there is exposure to moisture or other elements that could cause corrosion. This type of conduit is suitable for both indoor and many outdoor applications.
what is EMT conduit pipe made of
EMT (Electrical Metallic Tubing) conduit is often made of galvanized steel. This material offers good ductility and workability, allowing for easy bending, cutting, and joining. To enhance its corrosion resistance, the surface of the pipe is often galvanized.
Ductility and Workability
The relatively low carbon content endows the steel with high ductility. This means that EMT pipes can be easily bent, cut, and formed into various shapes required for electrical installations. For example, electricians can use bending tools to create precise angles in the pipe to navigate around obstacles in a building's structure, such as beams or joists.
Surface Treatments
To enhance the durability and corrosion resistance of EMT pipes, the low - carbon steel is often subjected to surface treatments. Galvanization is a common treatment method, where a layer of zinc is applied to the surface of the pipe. This makes EMT pipes suitable for use in a variety of environments.
Cost - effectiveness
Low - carbon steel is a cost - effective material choice. It is widely available and relatively inexpensive compared to some other metals or alloys. This cost - efficiency makes EMT pipes an affordable option for both residential and commercial electrical projects, contributing to their widespread use in the construction industry.
electrical emt conduit pipe sizes
| UL797 EMT Electrical Conduit Hot Dip Galvanized Pipe | ||||
| Size | OD (mm) | Thickness (mm) | Length (m) | Weight (Kg) |
| 1/2″ | 17.8-18.06 | 1.07 | 3.05 | 1.35 |
| 3/4″ | 23.29-23.55 | 1.25 | 3.05 | 2.07 |
| 1″ | 29.41-29.67 | 1.45 | 3.05 | 3.06 |
| 1-1/4″ | 38.22-38.48 | 1.65 | 3.05 | 4.56 |
| 1-1/2″ | 40.07-44.33 | 1.65 | 3.05 | 5.28 |
| 2″ | 55.67-55.93 | 1.65 | 3.05 | 6.72 |
| 2-1/2″ | 72.78-73.28 | 1.83 | 3.05 | 9.79 |
| 3″ | 88.52-89.28 | 1.83 | 3.05 | 12 |
| 3-1/2″ | 101.09-102.11 | 2.11 | 3.05 | 15.8 |
| 4″ | 113.79-114.81 | 2.11 | 3.05 | 17.8 |
The standard length of electrical metallic tubing shall be 3.05 m (10 ft) ±6 mm (±1/4in).
How to Prevent EMT Pipes Rust?
The outer surface of galvanized conduit steel pipe EMT should be coated with pure zinc to prevent co corrosion. The inner and outer surfaces of the pipeline should be coated with zinc to prevent corrosion. At the same time, all coatings should be completely covered, all parts should adhere firmly, smooth without bubbles or other defects that may reduce the protective value of the coating, and should be in metal to metal contact with the steel.As long as the zinc layer remains intact, it provides a high level of protection against rust.
What is GI conduit pipe for?
Electrical Wiring Protection
EMT GI conduits are used to wrap and protect wires passing through walls, ceilings, and floors. Also used to protect wires for outdoor lighting, such as streetlights, garden lights, and floodlights. The galvanized layer can withstand moisture, rain, and harsh weather conditions, ensuring the long-term reliability of the wire.
Grounding and Bonding
EMT GI conduits, being made of metal, are excellent conductors of electricity. In an electrical system, they can be used as part of the grounding and bonding infrastructure. Grounding is crucial for safety as it provides a path for electrical faults to be safely directed to the earth.
Flame Propagation Prevention
In some building codes, GI conduit pipes are preferred because they can contribute to the fire - resistance of an electrical installation. The metal conduit can act as a physical barrier, preventing the spread of flames along the length of the wires in case of a fire.
Products You May Like
Youfa steel pipe is professional EMT conduit galvanized pipe supplier of China. Welcome new and old customers inguiry us!
For more specifications of steel pipes, please contact us
