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News
ERW steel pipe is charge according to the principle of electromagnetic induction and communication in the conductor skin effect and eddy near effect and heat effect, make steel weld edge of local heating into molten state, the squeezing roller, to realize the joint between the crystal butt weld, so as to achieve the purpose of the welding seam welding. High frequency welding is a kind of induction (or contact pressure welding) welding, it need to weld filler, no welding spatter, narrow welding heat affected zone, weld moulding beauty, weld strengths such as good mechanical function, thus is widely used in the fruit of the steel pipe. The high-frequency welding of the steel tube is the use of skin effect of alternating current (ac) and the adjacent effect, steel (strip) after rolling forming, form a cross section of broken circular tube billet, in the middle of the tube billet inside near the induction coil rotating around one or a set of impedance (magnet) and impedance and tube billet was reluctant to form an electromagnetic induction loop, under the action of skin effect and the adjacent effect of tube bloom announces the edge to produce powerful and concentrated heat effect, make the weld edge rapidly heated to required after roller extrusion temperature, welding metal molten state to realize the joint between the crystal, after cooling to form a firm butt weld.
Our Sino East Steel company is a leading manufacturer of ERW steel pipes and we have more than 20 years producing experience. We can supply you the best quality steel pipe as per all your requirements. Welcome to send us inquiry about our pipes. We will try our best to give you the best service and sincerely hope we can establish a long term business relationship with u!