We have researched, designed and produced the most advanced domestic high speed and frequency of welded tube sets . The sets have the following features: 1． High speed joining , which can reach 140 meter/minute. 2. Low energy expended, The high frequency should cost 100 KW and its electricity circuit uses fresh style coupling mode so that it can save 20% energy comparing to the same style products. 3. The mode of switch off: Different from the traditional pneumatic flying saw cutting since it uses fresh style hydraulic pressure cutting mode . So far the cutting kerf is in order and without burr. It costs 50% expends of the traditional type. 4. Small noises: Using the chisel wheels equipments so it has the stable machinery structure and reduce the troubles. 5. Easy to assorted : The machinery sets takes the domestic and overseas technology advantages so it is easy to adjust the machinery sets. It just costs you only a couple days to charge of it and generally you spend only 10 minutes in adjusting the mould.