... 2,2-1/2,3,4,5,6 4.Outside Diameter(mm):21.3mm-165.0mm ... , d. Cutting head, e. Pickling, f. Grinding, g.Lubrication, h. Cold rolling, i. Degreasing, j. Solution ... (kg/m)mmInchNorminaldiameterAllowed toleranceNorminal diameterAllowed tolerance151/221.3 ±0.5mm2.7512%1.26203/426.8 ... .5 3.25 2.42321- 1/442.3 3.25 3.13401-1/248 3.5 3.8350260 ±1%3.5 ... -15%4.88652-1/275.5 3. ...