Редукційний трійник Viega

∅12х10х12, ∅15х10х15, ∅15х12х15, ∅15х18х15, ∅15х22х15, ∅18х12х18, ∅18х15х15, ∅18х15х18, ∅18х18х15, ∅18х22х18, ∅22х12х22, ∅22х15х15, ∅22х15х18, ∅22х15х22, ∅22х18х15, ∅22х18х18, ∅22х18х22, ∅22х22х15, ∅22х22х18, ∅22х28х22, ∅28х15х22, ∅28х15х28, ∅28х18х18, ∅28х18х22, ∅28х18х28, ∅28х22х15, ∅28х22х18, ∅28х22х22, ∅28х22х28, ∅28х28х15, ∅28х28х18, ∅28х28х22, ∅28х35х28, ∅35х15х35, ∅35х18х35, ∅35х22х28, ∅35х22х35, ∅35х28х22, ∅35х28х28, ∅35х28х35, ∅35х35х22, ∅35х35х28, ∅42х15х42, ∅42х18х42, ∅42х22х42, ∅42х28х42, ∅42х35х35, ∅42х35х42, ∅54х22х54, ∅54х28х54, ∅54х35х54, ∅54х42х54, ∅64х42х64, ∅64х54х64, ∅76,1х54х76,1, ∅76,1х64х76,1, ∅88,9х54х88,9