Electrical Metallic Tubing

Electrical metallic tubing (EMT), also commonly called thin-wall, is a listed steel raceway of circular cross section, which is unthreaded, and nominally 10′ long. 20′ lengths are also available. EMT is available in trade sizes 1/2 through 4. The outside is galvanized for corrosion protection and the inside has an approved corrosion-resistant organic coating. EMT is installed by use of set-screw or compression-type couplings and connectors. It is permitted to have an integral coupling comprised of an expanded, “belled” shape tube on one end with set screws. EMT with integral couplings is available in trade sizes 1-1/4 through 4.

Applicable Tolerance:

Outside Diameter : ±0.005in(0.13 mm)

Wall Thickness: +10%~ -5%

The wall thickness shall not vary more than 0.003in(0.08mm) throughout a 10 foot length

Length:±0.25 in (6.4 mm)

Standard: UL797-2000

Finishes: Zinc Plated, Pre-galvanized

Zinc coated: class 3, 80-120 g/m2; class 4, 275-500 g/m2

Package: 1.Big OD: in bulk;

2.Small OD: in bundles, packed by steel strips;

3.Waterproof package with plastic cloth;

4.Standard export package;

5.According to customers’ requirements.

Applications:

Conduit pipe is generally installed by electricians at the site of installation of electrical equipment. It is used to protect and route electrical wiring in a building or nonbuilding structure.