The Seamless Honing Tube is made of cold-rolled precision seamless steel pipe. It is a finished seamless steel pipe or a raw seamless pipe. After pickling, phosphating, and saponification, it is rolled into a hydraulic steel pipe by a cold rolling mill. The precision of the hydraulic steel pipe is extremely high and can generally be controlled within the range of 0.02-0.05MM. The standard is: GB3639-83, the allowable deviation of the inner diameter is 0.03mm, the inner surface roughness: Ra 0.2～0.8μm, the hydraulic steel pipe is straight Degree: 0.3 ~ 1.5mm/m, specially used for oil steel cylinder diameter.
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