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为了保证管路和结构件现场焊接的焊缝有好的质量,在实际现场焊接之前,通常都要通过工艺评定试验程序进行一些扩展试验。在现场焊接时,某些情况下可能要求从实际产品焊缝上取样进行试验。尽管这两种
In order to ensure good quality welds welded on-site for pipelines and structural members, some extensive tests are usually carried out through process qualification test procedures prior to actual on-site welding. When welding on site, it may be required in some cases to take samples from actual product welds for testing. Despite these two