德国蒂森ThyseenRV71焊丝ThyseenRV71E71T-1MJH40.061.400.500.0250.025----42052024ThyseenRV72E71T-1H40.061.300.450.0250.025----42052022ThyseenBA70E70T-5/E70T-5MH40.061.500.450.020.02----42052024)