cladded pipe
cladded pipe
(OP)
Hi,
when people talks about caldded pipe, what does that mean? does that mean you add some other materials to the original pipe material to strengthen it? how does the cladding process take place- physically or via certain chemical processes?
when people talks about caldded pipe, what does that mean? does that mean you add some other materials to the original pipe material to strengthen it? how does the cladding process take place- physically or via certain chemical processes?





RE: cladded pipe
There are a few techniques for cladding. Roll bonding "presses" two sheets of metal. Explosion bonding uses controlled explosions to bond the cladding to the base metal. Weld overlay adds a weld deposit to the surface of the material. (I am not sure if this is technically cladding, we always refer to it as overlay.)
In all cases, the intent is to use a cheaper parent material (like carbon steel) to provide the mechanical strength, and then use a relatively thin layer of alloy to provide corrosion or eerosion resistance.
Check out this website
http://www.corrosion-doctors.org/MetalCoatings/Cladding.htm
RE: cladded pipe
Reichertc is correct in his description....
I would like to add that the piping codes, (ASME B31.1 and others) SPECIFICALLY do not allow any credit to be taken for the mechanical strength of the liner. The wall thickness calculation is the same with or without the liner.
Secondly, I would like to point out that metallic lined (or "clad")pipe only makes sense in "high pressure" and large diameter applications. (I do not believe that you can find it below 4 inch NPS) For many applications up to about 4 inch, piping made from the premium liner material is commonly used.
Also, because of the expense involved in the manufacturing and the stocking of such a material, you will not find it "on the shelf"
My thoughts, recollections only.......
MJC
RE: cladded pipe