Metallic Coating Mass or Thickness: How Should Buyers Specify Z and AZ Coatings?

PPGI.LTD helps buyers state metallic coating mass or thickness on one clear basis. Use the coating type, standard, value, and unit together. This makes supplier quotes easier to compare.

Metallic coating mass or thickness compared with a precision scale and coating layer cross-section

Metallic Coating Mass or Thickness: What Does Each Tell You?

They describe two different things. Keep the unit beside every value.

Coating massMass over a known areag/m²
Coating thicknessDepth of one coating layerμm

How Should Z and AZ Be Written?

Keep the coating type and designation together. The number must follow the named product standard.

Color-coated steel running through the PPGI production line
  • Z identifies a zinc coating route.
  • AZ identifies an aluminium-zinc coating route.
  • Z120 and AZ150 are designations, not a conversion table.

The coating designation guidance explains why the standard stays with the value.

Send One Clear RFQ Line

A complete line helps our team quote the right product route.

01Standard
02Coating Type
03Designation
04Unit and Basis
Buyer benefitFewer quote differences. A clearer PO. A faster order check.

Buyer Concern & FAQ

Is Z120 or AZ150 Normally Stated as Total Coating Mass on Both Sides?
It often is under common product standards. Confirm the named standard, side basis, and tolerance in the RFQ.
Can Coating Mass in g/m² Be Converted Directly to Microns?
Not from one number alone. The coating material, density, side distribution, and measurement basis also matter.
What Should I Send to PPGI.LTD for a Quote?
Send the product standard, coating type, designation, unit, side basis, thickness, width, color, and order quantity.
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