... and good factory who produce and export the High Frequency Welding Pipe Making Machine, we export over 40 countries for our mill ... ,pls feel free to contact us.Model No.: ZY16, ZY20, ZY32, ZY50, ZY76, ZY89, ZY114, ZY219, ZY273Guarantee period:Within one ... ParameterModelDiameter of welded tubes(mm)Wall Thickness of welded tube(mm)Speed of tube welding(m/min)Power of major motor(KW)High Frequency power( ...