أ: 50.80
ب: 28.60
OD/ID xt: 19.05/15.75 × 1.65
OD1/ID1 × t1: 19.05/15.75 × 1.65
ب: 28.60
OD/ID xt: 19.05/15.75 × 1.65
OD1/ID1 × t1: 19.05/15.75 × 1.65