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Perforated Metal Terms
– A
device that attaches the grating to its supports.
– Flat metal bars connected to each end of the bearing bars
of a metal grating.
– Individual strips of metal that make up grating
panels, which support the load applied to the grating.
– The point of intersection between two strands of expanded
metal.
– Angles or flats that get welded to the
grating.
– The process of moving unheated metal through pairs
of roller dies to increase strength and reduce thickness. Expanded metal
is flattened in the cold rolling process.
– The bars perpendicular to the bearing bars of expanded
metal grating.
– The amount of deformation that occurs upon the application
of stress to grating. Acceptable deformation usually measures about 0.25”.
– A coating applied to grating. This coating is typically
paint or galvanizing.
– The distance measured in inches between two bond midpoints.
– The openings or gaps in expanded and perforated metal
that are surrounded by metal strands.
– A manufacturing method for grating in which a
specialized press, fit with cross-bar deformation, locks the bearing
bars in position. The press-locked method is an alternative to riveting
and welding.
– A shearing method that leaves prongs or jagged
edges on the expanded metal.
– The inclusion of a row of notches on expanded metal
grating to provide slip resistance.
– Process of trimming metal to meet size and shape design
requirements.
– Process whereby metal strip width is reduced to meet
design criteria.
– In expanded metal, the metal strip creating the pattern
framework.
– A panel of grating to which carrier end plates and nosing
are welded. Tread is designed specifically to be used as stairs.
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