ST52 DIN2391 Hydraulic Seamless steel tube

Honed Hydraulic Seamless steel tubeFeatures: Usage: used in hydraulic Sizes: OD:30-1500mm W.T:2.5-55mm

DIN ST52 seamless steel hydraulic honed tubes

1. MATERIAL SPECIFICATION AND REF. DOCUMENT

ST52,BK+S,DIN2391 OR Equivalent

2. CHEMICAL COMPOSITION (%) 

C (Max) Mn(Max) Si(Max) S(Max) P(Max)

0.22 1.6 0.5 0.035 0.035

3.Standard

GB/T 8713, GB/T3639, API 5CT.DIN3639

4.Grade

20#,45#,16Mn,25Mn,27SiMn

5. SUPPLY CONDITION

Cold drawn seamless steel tube, stress relieved and honed or skived roller burnished

6. TUBE ENDS

Tube ends shall be cut nominally square to the axis and free from burs

7. APPEARANCE

Tube shall have a smooth internal and external surface consistent with cold working

process, tube inner surface should be free from rust, scratches and other surface

irregularities.

8. CERTIFICATION

Material certificates will be send to you if want.

9. PACKING

Anti rust oil to be applied on material and both ends closed by plastic cap and

bundled by steel strips,braiding parcel.

10. SCOPE

Hydraulic cylinder tube for swivel crane, injection machine and construction

machine application

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ST52 DIN2391 Hydraulic Seamless steel tube