Grades of plywood: What you need to know about the different types of plywood grades
Typical plywood grades and characteristics
From blemish-free and sanded smooth to gaping spaces around knots and cracks, each grade of plywood has different characteristics.
In the United States, there are four basic softwood (construction) plywood veneer grades you need to worry about: A, B, C and D. Occasionally, you may run into a fifth grade called “C-plugged.”
Each sheet will have two grades, such as AC. The first letter is the face veneer grade, and the second is for the back veneer. Some plywoods have a third letter, X, that designates them for exterior use. From highest quality to lowest, here’s what to look for with grades of plywood:
“A” Grade. Sanded smooth, paintable. Though some neatly made manufacturer repairs are acceptable, you should have little trouble finding A-grades that are free of repairs and knots.
“B” Grade. Solid surface with some repairs, usually football-shaped patches and/or wood filler. May have tight knots (no chunks of wood missing) up to 1 in. Some minor splits.
“C” Grade. Tight knots to 1-1/2 in. and knotholes to 1 in., some splits and discoloration.
“D” Grade. Knots and knotholes up to 2-1/2 in. Some splits. Generally no repairs.
Vietnam Cabinet grade plywood inspection and quality control,plywood inspection,plywood qc,plywood inspector ,plywood grader,plywood test ,plywood grading system ,如无特殊说明，文章均为本站原创，转载请注明出处。If there are no special instructions, the articles are original, if you want to use or reproduce, please indicate the original source www.plywoodinspection.com,If you find that our articles infringe on your copyrights and interests, please email us at email@example.com in time and we will delete it at the first time.