Alwayslearningelec
Senior Member
- Location
- NJ
- Occupation
- Estimator
EMT Galv??
- Thread starter Alwayslearningelec
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winnie
Senior Member
- Location
- Springfield, MA, USA
- Occupation
- Electric motor research
The small amount of EMT that I've used is galvanized, but I don't know if it is 'hot dip galvanized'.
Allied says that their EMT is 'hot galvanized': https://www.alliedeg.us/emt/e-z-pull-emt/
-Jon
Allied says that their EMT is 'hot galvanized': https://www.alliedeg.us/emt/e-z-pull-emt/
-Jon
- Location
- Illinois
- Occupation
- retired electrician
I don't think any conduit is actually hot dipped...that process leaves a rough surface not suitable for pulling wire.
- Location
- Wisconsin
- Occupation
- PE (Retired) - Power Systems
As I recall.
Hot dipped galvanized after fabrication - galvanizing is applied after the product is manufactured, leaving a rough finish, this process can distort thin metal
Hot galvanized mill finish - galvanizing is applied while the metal is still hot and before it enters the final rolling mill, the finish is smooth, does not affect thin metal but the edges and seams are not finished.
Cold galvanizing - galvanizing is applied to the finished product at room temperature, finish may be rough, edges and seams are covered.
Hot dipped galvanized after fabrication - galvanizing is applied after the product is manufactured, leaving a rough finish, this process can distort thin metal
Hot galvanized mill finish - galvanizing is applied while the metal is still hot and before it enters the final rolling mill, the finish is smooth, does not affect thin metal but the edges and seams are not finished.
Cold galvanizing - galvanizing is applied to the finished product at room temperature, finish may be rough, edges and seams are covered.
kwired
Electron manager
- Location
- NE Nebraska
- Occupation
- EC
Most EMT has a different finish on inside than on outside, presuming it is done before final rolling?
synchro
Senior Member
- Location
- Chicago, IL
- Occupation
- EE
The in-line hot galvanizing mentioned is part of a continuous process that is done immediately after the tubing is formed and seam welded. This type of hot galvanizing is only on the outside of the tubing, and its thickness is apparently around 1/3 of that from hot-diipped batch processed galvanizing. The inside of the EMT is coated with a zinc rich paint and additional coatings.
Some EMT is electro-galvanized (electoplated).
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