... Bearing inner ring, Gear Blanks, Ring-shaped metal parts , Auto Parts2,Brass, steel, stainless steel pipe, welded pipe, aluminum ... Clad Steel, Metals such as Wire Rod Production Line on-line and off-line nondestructive testing3,Nondestructive testing such as Oil casing, sucker ... , adjust the volume of 1dB / file4, Band-pass filter or the speed of matching5, All-digital computer parameter adjustment6 ...