舰船用非金属材料进货检验及验收规则
Inspection and acceptance regulations to stock with goods for nonmetal of naval ship
2002-11-20
BS EN 4050-4-2012
Aerospace series. Test method for metallic materials. Ultrasonic inspection of bars, plates, forging stock and forgings-Acceptance criteria
航空航天系列 金属材料的试验方法 棒材、板材、锻坯和锻件的超声波检验 验收标准
2012-10-31
ASD-STAN prEN 4050-4
Aerospace series - Test method for metallic materials - Ultrasonic inspection of bars, plates, forging stock and forgings - Part 4: Acceptance criteria
航空航天系列.金属材料的试验方法.棒材、板材、锻坯和锻件的超声波检验.第4部分:验收标准
1996-01-31
BS 94/712749 DC
Aerospace series. Test method for metallic materials. Ultrasonic inspection of bars, plates, forging stock and forgings. Part 4: Acceptance criteria (prEN 4050-4)
航空航天系列 金属材料的试验方法 棒材、板材、锻坯和锻件的超声波检验 第4部分:验收标准（prEN 4050-4）
1994-11-08
DIN EN 4050-4
Aerospace series - Test method for metallic materials - Ultrasonic inspection of bars, plates, forging stock and forgings - Part 4: Acceptance criteria; German and English version EN 4050-4:2012
航空航天系列.金属材料的试验方法.棒材、板材、锻坯和锻件的超声波检验.第4部分:验收标准；德语和英语版本EN 4050-4:2012