Manufacture Method:

Cold drawn, hot rolled+deep hole bored

End finish:

Plain ends with square cuts,free of burrs

Bore Roughness:

Ra0.30um max for honed tubes, Ra0.25um Max for Skived&roller burnished tubes
 

End finish:
Plain ends with square cuts,free of burrs

Usage:
Hydraulic cylinder, Pneumatic Cylinder

Certification:

ISO9001, SGS,

Product Feature:
1.High precision (can cut the costs of machining) .
2.Excellent surface finish
3.Good mechanical performance (Aneal ,Bright Anealing,QT heatment on steel tubes to reach customers' Mechanical requsts. )

Dilivery Condition:

1.+C /BK

No heat treatment after final cold drawing process.

2.+LC/BKW

After the final heat treatment there's a suitable drawing pass.

3.+SA/BKS

After the final cold drawing process there's a stress relief heat treatment in controlled atmosphere.

4.+A/GBK

After the cold drawing process the tubes are annealed in a controlled atmosphere.

5.+N/NBK

After the final cold drawing operation the tubes are normalized in a controlled atmosphere.

The Advantage of Honed Cylinder Tube:

1 To improve surface roughness, roughness can almost reach Ra. M or so.

2 To correct the roundness, the ellipticity is less than 0.01 mm.

3 To improve the surface hardness, eliminate the stress deformation, hardness HV 4 ° or higher

After processing, the residual stress layer should improve the fatigue strength by 30%.

5, improve the quality of the match, reduce wear and tear, prolong the service life of the parts,

but the processing cost of the parts decreases.