กระบวนการเชื่อม (Welding Process)
114114 การเชื่อมไฟฟ าด วยลวดเชื่ใส ฟลอมั๊กไม ก ใช ปกปปกปาซ (Flux Cored (Flux Cored อง wire metal arc welding with cut gas shred)wire metal arc welding with cut gas shred)
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