SFS-W33K Iron Seam Welder Series
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The SFS-W33K Iron Seam Welder Series weld seam of roll welding is composed of welding spots. According to different overlap of the melting cores, it could be divided into roll spot welding and air-tight seam welding. There exist three stages in the forming process of welding spots: pressurization, heating fusing and cooling crystallization like spot welding.
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