the polishing machine specifications: 1) Quantity of polishing head: 6-head 2) Diameter range of polished pipe: 12 76.2mm 3) Max. length of polished steel: 6m, can also produce according to your requirements 4) Charge speed of stainless steel pipe: 1 20m/min 5) Diameter of main polishing head's axis:25.4mm (36mm or 32mm avaialble) 6) Motor power of polishing head: 4kW (5.5kW available as requested) 7) Charge motor power: 3kW 8) Rotational speed of polishing head: 2,900r/min 9) Outside diameter of accessory rag wheel: 320mm 10) Roughness of polished surface: Ra0.8 - 0.4/min