Filed Under (Knowledge) by Mason Pan on September-22-2007

Usually, the actual thickness tolerances of Chinese plywood/film faced plywood are as the following Table, which are in conformity with plywood standards (such as BS EN315:2000):

 

Nominal thickness thickness tolerance
2.0≤t≤3.2mm +0mm,-0.2mm
3.2<t≤6.0mm +0mm,-0.3mm(or sometimes -0.4mm for 6mm thick plywood)
6.0<t≤18.0mm +0mm,-0.5mm(or sometimes -0.6mm for 18mm thick plywood)
18.0<t≤21.0mm +0mm,-(0.5~0.9)mm
21.0<t +0mm,-0.9mm

Please note that :
(1)The thickness tolerances are the "usual" thickness tolerances for plywoods made of whole piece core veneers, i.e. the plywood with AA grade, A+ grade or A grade core . If the plywood or film faced plywood are made of B+/B/C+ grade cores, the thickness tolerance may be bigger .
(2)It’s easy for your Chinese suppliers to guarantee some more reasonabe and accurate thickness tolerances . So please advise your suppliers of your such requirement . For example, you can require your supplier to guarantee that the actual thickness of 18mm plywood should be over 18mm and less 18.5mm . When you place the orders, it’s better that you more detailedly explain your quality requirement to your suppliers . 
(3)If your supplier is equipped with ordinary sanding machine, the thickness tolerance may be bigger, too . 
(4)If your ordered plywood/film faced plywood have not been sanded, the thickness tolerance will be bigger .
(5)If your imported products are of low quality , the thickness tolerance may be bigger, too .
(6)If you want to know why thickness tolerance exists, please read my next post on thickness tolerance …….

Or you can ask your questions through comments below .

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