ZTZG ERW Tube mill machine;ERW Pipe mill machine;Square Sharing Mold;ZFII-C

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#shorts High Frequency Pipe Making Machine | Erw Steel Tube Mill #pipemachine #highfrequencyweldingПодробнее

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Introduction to ZTZG Company/ERW TUBE MILL Sharing RollersПодробнее

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Automatic ERW tube mill production line / GI pipe mill machineПодробнее

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Tube mill,Erw pipe mill,erw tube making machine,ZTZGПодробнее