| 摘要 |
A consumable guide tube includes a thin first elongated strip, a second elongated strip and a plurality of insulators. The thin first elongated strip has a front face having at least one longitudinal channel and a back face. The second elongated strip has a front face configured to be coupled to the front face of the first elongated strip and a back face. The plurality of insulator modules are deposited on the back faces of the thin first elongated strip and the second elongated strip. Preferably, the thin first elongated strip is a low carbon cold-rolled steel strip, and the second elongated strip is a low carbon hot-rolled steel strip. The guide tube is also configured to include two or more longitudinal channels.
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