... onMetal tube welding:such as cooper tube,steel tube,and aluminum tube's butt welding,plug welding and welding sets.The ... ,woodworking saw blade welding,cut grass piece of welding,cut aluminum welding.The advantages:1.Efficient and fast welding,1-5 ... efficiency4.By heating temperature low so there is no oxidation layer5.The apperance is exquisite,firm,full after welding high frequency induction machine ...