... -20mm(Flat bar, angle bar, Channel bar, H steel) Width: 10-180mm(Flat bar, angle bar, Channel bar, H steel) Surface ... Difference (mm)0.2-0.59+ 0.01 / - 0.010.020.6-0.99+ 0.01 / - 0.020.031.0-1.49 ... + 0.2 / - 0.20.041.5-1.99+ 0.02 / - 0.030 ... / - 0.050.094.1-6.0+ 0.05 / - 0.050.10 small coil stainless steel wire