B how much is the thickness of the top and bottom corrugated board?
B corrugated corrugated low and dense, so it is resistant to vertical pressure performance is poor, but the plane pressure resistance performance is higher, so with B corrugated cardboard production, suitable for holding bottles of food and so on.
3.0mm or soThe B arris type is 2.5 to 3mm in height, and 300mm in length is 48~52 in the flat;
About 3.5mm, the thickness should be smaller than this. The price is not good. Look what paper you use.
