helically-welded case
... helically welded tube螺旋焊接管 helically-welded case螺旋焊接壳体 helical-weld pipe螺旋焊管 ...
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双芯高温电缆与螺旋形线圈的线头在工字形圆环骨架内焊接后穿出，与装在钢包壳体上的连接器盒连接。
A double core high-temperature cable and the thrum of the spiral coil are welded in the I-shaped circular framework, and then extend out and are connected with a linker box arranged on a ladle shell.
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