for hydraulic and pneumatic cylinder use
ID:30-1500mm,W.T:2.5-55mm
Material:20#,45#,16Mn,25Mn,27SiMnGB/T8713-88ISO4394/1-1980E
Seamless Hydraulic carbon steel tube
ISO90012000 SGS test ID: 30-1500mm, W.T:2.5-55mm
Grade: 20#, 45#, 16Mn, 25Mn 27SiMn
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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