With respect to metal working, match Group A with Group B:
|
Group A |
Group B |
|
P : Defect in extrusion |
I : alligatoring |
|
Q : Defect in rolling |
II : scab |
|
R : Product of skew rolling |
III : fish tail |
| S : Product of rolling through cluster mill | IV : seamless tube |
|
V : thin sheet with tight tolerance |
|
|
VI : semi-finished balls of ball bearing |
1
P-II, Q-III, R-VI, S-V
2
P-III, Q-I, R-VI, S-V
3
P-III, Q-I, R-IV, S-VI
4
P-I, Q-II, R-V, S-VI