Top Material Hydraulic St52 tubes with better roughness

Specifications

Top Material Hydraulic St52 tubes with better roughness

1.Grade:20#,45#,Q345D,STKM13C-T(25Mn)
2.OD:30mm-250mm Hydraulic cylinder Cold Drawn honed tube Best reputation New Supplier
3.Technique:Cold drawn honed tubes

4.Suitable for hydraulic cylinder tubes,honing or skiving and roller burnishing cylinder tubes

Dimensions tolerance

Mechanical properties

• Tensile strength:≥600Mpa
• Yield strength :≥520Mpa
• Elongation :>15%
• Hardness :HRB>85
• Supply condition:BKS(+SR)

Ready to hone tube (or ready to skiving tube)

CHEMICAL COMPOSITION (%)

MECHANICAL PROPERTIES

EXCENTRICITY

measured according to the formula:

E =  (max Wt – min Wt)/( max Wt + min Wt) x 100 %

BORE OVALITY

The bore ovality is comprised in the 50 % of the inside diameter tolerances.

Marking:ID, OD

Length: unfixed length or fixed length 

Package: banding with steel strips, braiding parcel at outside 

Conservation: Anti rust oiled coating on the inside and outside of the surface, plastic caps at both ends  

Main Production Progress:

 Finished products.

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1.Cargo track service during transporting and feedback service after cargo is loaded on board

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