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1.rolled materials shall be subjected to full ultrasonic examination in accordance with class requirements of ships.
2.rolled materials shall be subjected to full ultrasonic examination in accordance with the latest issue of SEL072-77, class 2.
今天看规格书有如上两条要求,大家帮忙看看怎么解释。另外,船级社有关于材料的超声波全面检验的规定吗?我怎么找不到 |
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