What is ERW Tube Mill

High Frequency ERW Tube Mill is used for producing straight seam welded steel tubes and pipes, it occupies a decisive position in the field of industry and building pipe. ERW (Electric Resistance Welding) is a kind of welding method which uses resistance heat as energy source. Regarding its classification, ERW tubes can be roughly divided into 2 forms of ERW AC welding steel pipes and ERW DC welded steel pipes. And according to a different frequency, ERW seam-welded tubes can also be classified into low-frequency welding, medium frequency welding pipes, and supercurrent welding pipes.

High-Frequency welded pipe machines are widely used in building structures, oil and gas transportation, electric power, chemical, convey and other industries. Industry material is a very high requirement for pipe manufacturing quality, so how to select a group of excellent pipes making machine is particularly important. ZTZG with its years of technical research and development and professional team to help you!

Technical flow：

Scrolling up→ Uncoiling → Shear and Welding→ Spiral accumulator→ Forming → H.F. induction welding→ External burr removing→ Cooling → Sizing→ Flying saw → Run out table →Inspecting→ Packing→ Warehouse.

The high-frequency welded pipe machine is to feed a steel strip of a certain specification into the machine, curl the steel strip into a tube billet through the forming roller, and then use the high-frequency proximity effect and skin effect to quickly heat the pipe edge to the welding temperature, and then press the extrusion roller The welding is completed under the extrusion force, and then the steel pipe of the required specification is cooled, sized, and roughly straightened.

ZTZTG's Specifications of ERW Pipe Mill for Sale：

Model	Round pipe mm	Square pipe mm	Thickness mm	Working Spead m/min
ERW20	Ф8-Ф20	6x6-15x15	0.3-1.5	120
ERW32	Ф10-Ф32	10x10-25x25	0.5-2.0	120
ERW50	Ф20-Ф50	15x15-40x40	0.8-3.0	120
ERW76	Ф32-Ф76	25x25-60x60	1.2-4.0	120
ERW89	Ф42-Ф89	35x35-70x70	1.5-4.5	110
ERW114	Ф48-Ф114	40x40-90x90	1.5-4.5	65
ERW140	Ф60-Ф140	50x50-110x110	2.0-5.0	60
ERW165	Ф76-Ф165	60x60-130x130	2.0-6.0	50
ERW219	Ф89-Ф219	70x70-170x170	2.0-8.0	50
ERW273	Ф114-Ф273	90x90-210x210	3.0-10.0	45
ERW325	Ф140-Ф325	110x110-250x250	4.0-12.7	40
ERW377	Ф165-Ф377	130x130-280x280	4.0-14.0	35
ERW406	Ф219-Ф406	170x170-330x330	6.0-16.0	30
ERW508	Ф273-Ф508	210x210-400x400	6.0-18.0	25
ERW660	Ф325-Ф660	250x250-500x500	6.0-20.0	20
ERW720	Ф355-Ф720	300x300-600x600	6.0-22.0	20