Destructive tests on welds in metallic materials - method for taking samples for delta ferrite measurement iso 17655 : 2003 ; german version en iso 17655 : 2003 金属材料焊缝破坏检验.铁素体测量样品制备方法
3.
Destructive tests on welds in metallic materials - resistance welding - pressure test on resistance seam welds iso 17654 : 2003 ; german version en iso 17654 : 2003 金属材料焊缝破坏检验.电阻焊.电阻缝焊压力试验