Q390C | 20 | 2200 | 8000 | 2.763 |
Q390C | 20 | 2200 | 8000 | 2.763 |
Q390C | 20 | 2200 | 8000 | 2.763 |
Q390C | 20 | 2200 | 8000 | 2.763 |
Q390C | 20 | 2200 | 8000 | 2.763 |
Q390C | 20 | 2200 | 8000 | 2.763 |
Q390C | 20 | 2200 | 8000 | 2.763 |
Q390C | 40 | 2200 | 8000 | 5.526 |
Q390C | 40 | 2200 | 8000 | 5.526 |
Q390C | 40 | 2200 | 8000 | 5.526 |
Q390C | 40 | 2200 | 8000 | 5.526 |
Q390C | 40 | 2200 | 8000 | 5.526 |
Q390C | 30 | 2500 | 12000 | 7.065 |
Q390B的强度在490MPA以上,焊丝就用ER50焊丝。 焊条用J507,J502这样的就可以了。