The nominal dimensions of board (width / thickness, mm):
Thickness
Width
25
50
100
120
150
200
50
75
100
120
150
200
75
75
100
120
150
200
Standard width and thickness of beams are generally 100 mm and longer (up to 200 mm) in multiples of 10 mm. Nominal sizes of lumber and tolerances on nominal sizes correspond to the requirements of GOST 24454-80, shown in the table:
Nominal size of lumber
Maximum deviations
1. In length, mm
+50/ -25
2. In thickness, mm: 2.1. with sizes up to 32 mm inclusive 2.2. from 40 to 100 mm inclusive 2.3. more than 100 mm
+1/ -1 +2 / -2 +3 / -3
3. Width for trimming lumber, mm: 3.1. with sizes up to 100 mm inclusive 3.2. more than 100 mm
+2 / -2 +3 / -3
Individual pieces of lumber exhibit a wide range in quality and appearance with respect to knots, slope of grain, shakes and other natural characteristics. Therefore, they vary considerably in strength, utility and value.
Application:
construction;
joinery;
packaging industry, etc.
Packing: bundles packs with inter-row strips, strapped by tape.