Visual grading of Pine and Spruce

Sawn wood from Sweden is visually graded according to “NORDIC TIMBER Grading Rules”, which is approved by the sawmill organisations in Sweden, Norway and Finland.

The sawn timber, Pine or Spruce, is divided into grades according to the quality features. The grades are I, II, III, IV, V, VI and VII or also called A, B, C and D . For each of the grades the following features are specified: Number and sizes of knots, fissures and wane and other features. No numerical values are given for grade VII or D.

                                            QUALITIES

I II III IV V VI VII
       Alternatively
A1 A2 A3 A4 B C   D

GRADE A is divided into four sub-grades A1, A2, A3 and A4.

PHOTOS SHOWING PERMITTED KNOT  STRUCTURE OF GRADES I-VI or A, B and C.
The darker photos on the left side show Pine and the photos to the right show Spruce.

GRADE I or A1

PINE                                        SPRUCE

GRADE II or A2

PINE                                             SPRUCE

GRADE III or A3

PINE                                          SPRUCE

GRADE IV or A4

PINE                                               SPRUCE

GRADE V or B

PINE                                                 SPRUCE

GRADE VI or C

PINE                                             SPRUCE