Өндөр чанарын хүйтэн цувих хоолойн тээрэм Хамгийн … High Frequency ERW Tube & Pipe Mill Machine Product Overview ERW Tube & Pipe Mill Machine Series are the specialized equipment to produce high-frequency straight seam welded pipe and tube for structural pipe and industrial pipe with Φ4.0~Φ273.0mm and the wall thickness …