Diámetro en mm      Nº        Largo aprox.de 1 kg en metros

0,6               1                          454,54

0,7               2                          333,33

0,8               3                          255,10

0,9               4                          201,61

1,00             5                          163,40

1,1               6                          134,95

1,3               8                          96,62

1,5              10                         72,55

1,8              12                         50,40

2,20            14                         33,74

2,70            16                         22,40

3,00            17                         18,14

3,40            18                         14,12

3,90            19                         10,73