Describe how two pieces of round sheet metal pipe are joined

What will be an ideal response?


One end of the duct is crimped, making it's outside diameter slightly smaller than the regular duct diameter. A bead behind the crimp serves as a stop when inserting one duct into another. All joints should be fastened with sheet metal screws or rivets. The joint should be sealed with UL 723 duct tape and or mastic.

Trades & Technology

You might also like to view...

How many planet pinions are used in a planetary gear set?

A) Three B) Two C) Three, four, or five D) Four

Trades & Technology

Another term for mechanical lifter is tappet.

Answer the following statement true (T) or false (F)

Trades & Technology

What are the two ways of mounting a seat belt pretensioner?

What will be an ideal response?

Trades & Technology

The association that provides inspectors certification as a CWI is:

A) AWWA B) API C) ASME D) AWS

Trades & Technology