Pipeline inner loop welder is applicable for big-caliber pipeline welding in construction procedure to joint the ends of pipes and fulfill roots welding.
管道全位置自动内焊机适用于大口径管道焊接施工过程中组对管口、完成根焊。
参考来源 - 管道全位置自动内焊机的总体方案及机械系统研究·2,447,543篇论文数据,部分数据来源于NoteExpress
N-COUNT A welder is a person whose job is welding metal. 焊接工
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