This is normally done to eliminate sharp edges.
Curled sheet metal.
Curls are features that are produced by rolling the edge of a stamped sheet metal part.
Curved sheet metal part.
The curled edge provides strength to the edge and makes it safe for handling.
Curls are produced in order to shape the material into a hollow ring.
The most common curled metal material is metal.
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Curling is different than a tear drop hem because in a curl the edge finishes inside itself where a hem leaves the initial edge exposed.
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Other parts are curled to perform their primary function such as door hinges.
Curling curling sheet metal is the process of adding a hollow circular roll to the edge of the sheet.
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These curls should generally have a diameter of about 10 to 20 times the thickness of the material being worked.
Curved sheeting has a number of uses in the form of profiled galvanised steel however more recently there has been a demand for plastic and polyester curved sheets.
Curved sheeting can be used on a number of structures such as dutch barns and romney huts and useful for roofing grain pits and silos.
Curling is a sheet metal forming process used to form the edges into a hollow ring.
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