Faq

Five rules determine the bore diameter from the basic code.

Rule 1: for bore Ø < 10mm

Rule 2: for bore Ø ≤ 10mm to < 20mm


Rule 3: for bore Ø ≥ 20mm to ≤ 480mm


Rule 4: for bore Ø≥500mm


Rule 5: As rule 4, but for bore Ø≤ 500mm