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原文
After the valve cast steel welding non-destructive testing Valve casting for "heavy defects" and "important welding", ASTMA217A217M-2007 standard requirements, such as casting production line S4 (magnetic particle inspection) provides additional requirements, the use of welding to check the casting of the same quality standards to magnetic particle inspection check. Such as casting production line S5 (radiographic examination) provides additional requirements for the leakage test pressure casting, welding, or preparation of any pit deeper than the wall thickness of 20% or 1in1 (25mm) of the castings, and welding preparation any pit area of ??greater than 10in2 (65cm2) repair welding of castings, should adopt the same standard ray casting inspection inspection inspection. JB/T5263-2005 standard requirements, defect patching and re-ray or ultrasonic testing should be carried out. That is important for re-welding defects and must be an effective non-destructive inspection, certified before using.
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译文：
对于阀门铸件的“重缺陷”和“重要补焊”,ASTMA217A217M-2007标准中规定,如铸件生产符合S4(磁粉检查)补充要求的规定,补焊要采用检查铸件同一质量标准的磁粉检验来检查。如铸件生产符合S5(射线照相检查)补充要求的规定,对于水压试验渗漏的铸件、或准备补焊的任何凹坑深度超过壁厚的20%或1in1(25mm)的铸件以及准备补焊的任何凹坑面积约大于10in2(65cm2)的铸件的补焊,都要采用检查铸件同一标准的射线检验进行检查。JB/T5263-2005标准中规定,重缺陷补焊后应进行射线或超声检测。即对于重缺陷和重要补焊,必须要进行有效的无损检查,证明合格后方能使用。

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