As we all know, the weld quality determines the quality of the pros and cons of the pipe, once the weld pipe stoma, which not only affect the pipeline weld tightness, resulting in pipeline leakage, and will become the trigger point of corros...英国华人论坛
Spiral pipe holes in low height single echo waveform is a single slit, less chaotic. From all directions to detect the reflected waves is substantially the same, but slightly movable probe disappeared a dense cluster of pores arise from the...英国华人论坛
Porosity of the weld metal at high temperatures, excessive absorption of dissolved gases or gas within the cell due to the metallurgical reaction, the time to discharge when the bath is cooled and solidified, while cavities formed on the sur...英国华人论坛