24 gauge 20 gauge 18 gauge and 16 gauge.
G90 galvanized sheet metal weight.
The galvanized sheet coating parameters relate to the total for both sides of the sheet.
48 oz 24 oz 20 oz and 16 oz.
These numbers refer to the weight mass in si units of zinc on the surface of the steel sheet in inch pound english or imperial units of measurement.
Cold and hot rolled steel.
Taking g90 as an example the coating weight on one square foot of sheet total both sides of the sheet shall have a triple spot test tst average minimum of 0 90 ounces.
26 gauge 24 gauge 20 gauge 18 gauge 16 gauge 14 gauge 1 8 and 1 4.
Batch galvanizing coating specifications are given in weight per surface area.
Hot dip galvanizing is the process of coating iron or steel with a thin zinc layer by passing the steel through a molten bath of zinc at a temperature of around 860 f 460 c.
If equally applied to both sides of the sheet there would be a minimum of 0 45 ounces on each surface.
The standard product is class g90 which has 0 9 oz ft 2 of sheet total both sides or about 0 76 mils 18 µm thickness per side.
Designation system is given in terms such as g60 g90 etc.
Kynar galvalume steel for metal roofing and gutters.
That is for g90 the coating on one square foot of sheet total coating both sides of the sheet weighs a minimum of 0 90 ounces.