A.SMAW(N10)-FeⅡ-2G-86-Fef2 B.SMAW(N10)-FeⅡ-1G-86-Fef4 C.SMAW(N10)-FeⅡ-2G-86-Fef4 D.SMAW-FeⅡ-2G-86-Fef4
A.SMAW-FeⅡ-1G-14-Fef3J B.SMAW-FeⅡ-1G(K)-14-Fef3J C.SAW-FeⅡ-1G(K)-14-Fef3J D.GTAW-FeⅡ-1G(K)-14-Fef3J
A.0.8% B.0.6% C.0.4% D.0.25%