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 China Wood Industry Network

Inspection quantity of other sawn timber defects

Update Date:

Sawn timber → sawn timber inspection → inspection of various sawn timber defects   → inspection of other sawn timber defects
The national standard GB / T 4822-1999 "inspection of sawn timber" was approved by the State Bureau of quality and technical supervision on January 25, 1999, and implemented since August 1, 1999.

Inspection of other sawn timber defects

Inspection content Measurement method
Pith Calculation of pith omission defect
When the xylem around the pith has been peeled off on the surface of the wood, the surface of the wood presents a concave groove The groove part is calculated as crack
Saw edge damage Saw edge damage exceeds tolerance limit The saw or ruler should be changed
Angle loss due to trauma Treat according to blunt edge
Bending surface of square timber The most serious bending surface is measured and graded according to the bending direction
Special materials with unqualified materials It can be evaluated according to the allowable limits of defects of common sawn timber in GB / T 153 and GB / T 4817