The electric resistance welding (ERW) , ERW is the first letter Refrigerant charging pipe corresponding to English words. High-frequency welding is divided into contact welding and induction welding. DC welding is generally used for small diameter steel pipes. ERW straight […]
Archivos de agosto, 2021
ERW is the first letter Refrigerant charging pipe corresponding
Miércoles, agosto 4, 2021Tags: China Ball valve Manufacturers
Publicado en China Cutter accessories Factory, hardware machinery parts, r134a to r410a adapter| No hay comentarios 
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