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压力容器探伤一级片和二级片子怎样区别

2025-04-04 16:31:37

推荐回答（1个）

回答1：

您好，
非常感谢能够与您交流探讨技术问题。
根据NB/T 47013.2-2015 第6.1.4条，
焊接质量等级分级一般规定：
一级片即I 级焊接接头内不允许存在裂纹，未熔合，未焊透和条形缺陷。
二级片即II级焊接接头内不允许存在裂纹，未熔合，未焊透。

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