high-fgequency electric welded steel pipe
High-Frequency Electric Welded Steel Pipe 高频电焊钢管 High-Fgequency Electric Welded Steel Pipe 高频电焊钢管 electrically welded tube electric welded pipe 电焊管 ..
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high-fgequency electric welded steel pipe
高频电焊钢管
以上为机器翻译结果，长、整句建议使用 人工翻译 。