Projekta Nr.ISO 7805-2:1987
Nosaukums<p>Describes three patterns using round (circular) and square perforations. The sizes of holes range down to 2 mm for square holes and to 0.5 mm for round holes. Five ratios of pitch to hole are specified which result in nominal open areas ranging from about 60 % to 23 %.</p>
Reģistrācijas numurs (WIID)14702
Darbības sfēra<p>Describes three patterns using round (circular) and square perforations. The sizes of holes range down to 2 mm for square holes and to 0.5 mm for round holes. Five ratios of pitch to hole are specified which result in nominal open areas ranging from about 60 % to 23 %.</p>
StatussStandarts spēkā
ICS grupa73.120