
ultrasonic testing / UT
| The standard of UT | |||
| Standard | level | ||
| BS5996:1993(British) | BS4 | BS3 | BS2 |
| SEL072-79(Germany) | II | III | IV |
| JISG0801-1993(Japan) | qualified | ||
| NFA 04-305(Franch) | B | A | |
| ASTM 435/A435M-90 | qualified | ||
| ASTM A578/A578M-96(American) | C | B | A |
| EN10160-1999( European ) | S2E2 | S1E2 | S0E2 |

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