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DIN2391 carbon cold rolled pipe seamless ST52 honed steel tube and pipe
May 04, 2017

1.Hydraulic cylinder tube

The hydraulic cylinder tube is the main part of the hydraulic cylinder.The inner 
hole of the hydraulic cylinder tube usually precision processed by boring,reaming,rolling 

or honing.By these process can ensure the piston,sealing elements and the support 
elements move smoothly,then ensure the sealing effect and reduce the abrasion.The 
hydraulic cylinder tube will bear big pressure,so need high strength and stiffness.


2.Hydraulic Tube Material
JIS STKM13C, DIN ST52, SAE1020 or Mechanical Construction Use Carbon Steel Pipes, Other Specifications Can be made Customer Request based on.

 

Hydraulic pneumatic liner actuator standard/size/precise

Processing the formCylinder diameterLengthStraightnessDimensional accuracyWall thicknessInner hole roughness
cold drawn48~325≤12m0.3~0.8mm/m
±10%0.8~1.6μm
honing48~325≤10m0.3~0.8mm/mH8~H9±10%0.3~0.8μm
roling50~250≤ 9m0.3~0.8mm/mH7~H9±10%0.01μm

 

Mechanics performance

Material

Tensile strength

Yield strength

Elongation

Hardness

Ck20/20#/AISI1020

>520 N/ mm2

>375 N/mm2

>15%

>85HB

Ck45/45#/AISI1045

>600 N/ mm2

>520 N/ mm2

>15%

>85HB

ST52/16Mn/Q345D

>600 N/ mm2

>520 N/ mm2

>15%

>85HB

25Mn/STKM 13C-T

>600 N/ mm2

>530 N/ mm2

>15%

>85HB

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