Category: 

What Is Galvanized Steel Pipe?

In the mid to late 1900s copper replaced galvanized steel as the choice material in pipe fittings.
Galvanized steel pipes.
Galvanized metal is a type of metal is coated with a protective layer of zinc that protects it from rust and corrosion due to exposure to the elements.
Article Details
  • Written By: Josie Myers
  • Edited By: Michelle Arevalo
  • Last Modified Date: 30 July 2014
  • Copyright Protected:
    2003-2014
    Conjecture Corporation
  • Print this Article
Free Widgets for your Site/Blog
Sean Connery was a milkman before he became an actor.  more...

August 27 ,  1859 :  The first successful oil well in the US was drilled.  more...

Galvanized steel pipe is a steel pipe that has been coated with zinc. This coating protects the steel from corrosion. It is most commonly used for outdoor construction like fences and handrails, or for some interior plumbing. It is also sometimes called galvanized iron pipe.

The process of galvanization was first discussed by scientists in the 1770s, nearly 60 years before it was finally introduced in the 1830s. French engineer Stanislaus Tranquille Modeste Sorel took out the first patent for the process in 1937, and began manufacturing it soon after. By the 1850s, Europe was producing galvanized steel out of manufacturing plants located around the continent. The United States followed shortly thereafter, opening its first plant in the 1870s.

To create galvanized steel pipe, steel materials are placed into a molten bath of zinc. This process is also called hot dip galvanization. The two metals are chemically bound to one another in this process, and will therefore never separate, resulting in a more resistant and longer lasting version of steel.

Ad

This type of pipe is not suited to gas lines, but was very commonly used for full, in-home plumbing until the mid- to late 1900s, when copper replaced it as the pipe material of choice. It was discovered at that time that lime scale buildup occurred faster in galvanized steel pipe than in copper or plastic. It is still sometimes used indoors for plumbing, particularly for the replacement of small areas of pipe, in which the flow will not be greatly interrupted by sections of lime scale.

Outdoor applications are a more common use of galvanized steel pipe in the modern age. It is most likely to be seen on chain link fences or handrails. It is highly resistant to corrosion, which makes it a perfect choice for goods or materials that will be exposed to the elements on a regular basis.

Galvanized steel pipe is generally connected by threads on either end of a length of pipe. A small amount of adhesive is typically placed on the threads before screwing them together, in order to reinforce the connection. If no threads are available, the pipes and fittings can be welded together, although caution should be taken because the heat from welding can release dangerous zinc fumes into the air. Pipes can be cut using a cutoff saw or hacksaw.

Ad

Discuss this Article

anon150489
Post 6

why is galvanized pipe not suited for conveying diesel fuel?

anon137436
Post 5

what is the suitable electrode for welding the galvanized pipe?

bowdler1971
Post 2

what problems can happen when you use a cutting torch to cut galvanized steel and don't use a mask?

anon71190
Post 1

what about using a cutting torch to cut it apart for a tear down and what are the dangers of breathing in the fumes?

Post your comments

Post Anonymously

Login

username
password
forgot password?

Register

username
password
confirm
email