Pillowplate
Encyclopedia
Pillow plate is a metal heat exchanger
Heat exchanger
A heat exchanger is a piece of equipment built for efficient heat transfer from one medium to another. The media may be separated by a solid wall, so that they never mix, or they may be in direct contact...

 formed by inflating.

Pillow plates are generally made of two spaced thin steel sheets, (laser) welded to each other.
The space between the plates is pressurized to deform one or both plates in order to provide a space in which a heating (or a cooling) medium can circulate.
Creating the single or double embossed plates.

Pillow plate can be produced with different metals.
Appearance in industry is Stainless steel
Stainless steel
In metallurgy, stainless steel, also known as inox steel or inox from French "inoxydable", is defined as a steel alloy with a minimum of 10.5 or 11% chromium content by mass....

80%, Normal steel 10%, Aluminium and Titanium 5% other materials 5%.
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