1，出口法兰有沙孔 The outlet flange has a sand hole
2，焊缝处焊液堵塞流道孔 Solder fluid at the weld seam blocks the flow hole
3，焊缝咬边/未焊满 Weld seam undercut/not soldered
room 1102 unit 2 building 3, green island park, 63Hongkong middle road, Qingdao city ,Shandong Province
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