saturation magnetic flux density (bs), curie temperature (tc),the initial permeability (μa)of the materials  and specific loss and other technical indicators of our products have  ranked the leading domestic level . The main features of the product  are that it has a high fire, fast  welding speed , good mechanical properties, and  a very long service life.Even working at a higher temperature it can still guarantee high-speed welding, and  meet a variety of imported and domestic use of tube-welding machine requirements