A.0.75~1000 B.1.0~1000 C.1.25~1000 D.1.35~1000
A.1060及以級機械變 B.1070 C.1120 D.1150
A.鑄鐵 B.鑄鋼 C.輾鋼 D.輾鋼和鑄鋼