What is the minimum order for the roofing sheet ?

What is the minimum order for the roofing sheet ?

For the roofing sheet we can supply below:

1.galvanized corrugated steel sheet

0.13mm-0.60mm

2.galvalume(aluzinc coated) corrugated sheet

0.16mm-0.60mm

3.Preainted corrugated sheet

0.16mm-0.60mm

The minimum quantity for is one container.