EMT Conduit Galvanized Electrical Metal Tubing for Engineering
Product Introduction
Galvanized Electrical Metallic Tubing (EMT) is a thin-walled metal conduit designed for electrical line protection and is widely used in commercial buildings, industrial facilities and residential electrical systems. This type of conduit uses high-quality low-carbon steel as the base material, and forms a uniform and dense zinc protective layer on the surface of the steel pipe through a hot-dip galvanizing process, which makes it have both the mechanical strength of steel and the corrosion resistance of the zinc layer.
Production Process
EMT's production process is the core of its quality, especially the hot-dip galvanizing process, which directly determines the corrosion resistance and service life of the product. Regular manufacturers usually use strict hot-dip galvanizing process. The whole process includes three stages: pre-treatment, hot-dip galvanizing and post-treatment, involving more than ten fine processes. Each step requires precise control of parameters to ensure the quality of the final product.
Specifications of Square Tubes steel
The base material of EMT is usually low carbon steel, such as GB/T3091-2001, BS1387-1985, DIN EN10025, EN10219, JIS G3444:2004, ASTM A53, ASTM A53: GR. A , GR. B, Steel Grade: Q195, Q235, Q345, S235, S235JR, S355JR.STK400 /500, etc. This low carbon steel has good formability and welding performance. Dimension tolerance control is an important indicator to measure product quality. The outer diameter tolerance of high-quality EMT is usually controlled within ±0.1mm, the wall thickness tolerance is ±0.05mm, and the ovality does not exceed 80% of the outer diameter tolerance.
The quality standard of the galvanized layer is a key indicator for evaluating the corrosion resistance of threading pipes. According to the ASTM A53 standard, the minimum requirement for hot-dip galvanized layers is that the zinc layer weight is not less than 275g/m² (equivalent to a zinc layer thickness of about 40μm). The actual zinc layer weight of high-quality products often reaches 350-500g/m², which can provide longer-term protection in highly corrosive environments.
Main standards: UL797, ASTM A53, ANSI, ANSI C80.3, UL 514B. Common international standards also include: GB/T3091, EN10346, JIS G3444, etc.
Normal Size
|
Normal Sizes (In) |
OD (mm) |
Thickness (mm) |
ID (mm) |
Length (m) |
|
1/2" |
17.93 |
1.07 |
15.79 |
3.05/6.12 |
|
3/4" |
23.42 |
1.24 |
20.94 |
3.05/6.12 |
|
1" |
29.54 |
1.45 |
26.64 |
3.05/6.12 |
|
1-1/4" |
38.35 |
1.65 |
35.05 |
3.05 |
|
1-1/2" |
44.20 |
1.65 |
40.90 |
3.05 |
|
2" |
55.80 |
1.65 |
52.50 |
3.05 |
Application fields and advantages
|
Application Scenario |
Main Challenges |
EMT Solutions |
Relative Advantages |
|
Commercial Building Electrical Systems |
High fire safety requirements, dense wiring |
Fire-resistant metal material, systematic wiring |
Superior fire resistance compared to PVC pipes |
|
Industrial Factories |
High risk of mechanical damage, harsh environment |
High-strength protection, corrosion-resistant design |
Better impact resistance than plastic pipes |
|
Data Centers |
Sensitive to electromagnetic interference, high heat dissipation requirements |
Electromagnetic shielding, metal heat dissipation |
Better signal protection than non-metallic pipes |
|
Outdoor Facilities |
Exposure to sun/rain, large temperature fluctuations |
Weather-resistant, broad temperature adaptability |
Longer lifespan than ordinary plastic pipes |
|
Humid Environments |
High humidity, corrosive environment |
Galvanized coating protection, rust prevention |
Better durability than ordinary steel pipes |
Performance advantages:
Corrosion resistance: EMT forms a zinc layer on the surface of the steel pipe through the galvanizing process, which can effectively prevent the steel pipe from being oxidized and corroded, greatly extending the service life of the product.
Mechanical strength: EMT has high physical strength and can withstand a certain degree of extrusion, impact and stretching. EMT threading tube is processed with high-quality galvanized sheet materials, and the welds are processed by special processes to ensure the overall structure is firm.
Fireproof performance: Metal materials do not burn and can effectively prevent the spread of flames.
Electromagnetic compatibility: The continuous shielding layer formed by the metal tube can prevent external electromagnetic interference from affecting the internal circuit, and also prevent the internal circuit radiation from interfering with other equipment.
Durable and economical: Its long life and low maintenance cost make its life cycle cost more advantageous.
Installation methods and precautions
The correct installation of EMT is the key to ensure its full performance. Professional installation technology can not only improve construction efficiency, but also ensure the long-term reliable operation of the electrical system. The installation quality of EMT directly affects the safety and service life of the electrical system, and must be constructed by professional electricians in accordance with the specifications.
Packaging and Shipping
Standard export packing. Sea freight, bulk sea freight, air freight, land transportation, and multi-modal transportation.
fAQ
Q: Are you a factory?
A: Yes, we are integrated with industry and trade.
Q: What is the minimum quantity of your order?
A: lt depends on the size and number of products.
Q: Can you provide samples?
A: Samples are available, freight payable.
Q: How do you control quality?
A: Mill Test Certification is supplied with shipment, Third Party Inspection is available. and we also get lsO, CE, SGS, TUV, Alibaba Verified.
Q: What are the advantages ofyour company?
A: We have many professionals, technical personnel, more competitive prices and best after-dales service than other steel companies.