(1). extrusion seamless circular pipe Outer diameter scope: 25mm ~ 550mm Wall thickness scope: 5mm ~ 50mm (2). cold-drawings, roll over the circular pipe Outer diameter scope: 6mm ~ 120mm Wall thickness scope: 0.5mm ~ 5.0mm (3). cold-drawings squares, rectangular tube Length of side scope: 10mm ~ 70mm Wall thickness scope: 1.0mm ~ 5.0mm (4). cold-drawings ellipses tube Major axis scope: 27mm ~ 114.5mm Minor axis scope: 11.5mm ~ 48.5mm Wall thickness: 1.0mm ~ 2.5mm
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