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Specifications
Hydraulic cylinder Honed tube1.High quality
2. Max length 12m
3. NO MOQ
4. Best reputation
Yantai Xinpeng Steel Is professional supplier on hydraulic cylinder tubes,bored tubes, Honed tubes, Cold drawn tubes.Seamless steel tubes, Cold drawn weld tubes!
Product name: Professional Supplier hydraulic cylinder Honed tube
1. MATERIAL SPECIFICATION AND REF. DOCUMENT
ST52,BK+S,DIN2391 OR Equivalent
2. CHEMICAL COMPOSITION (%)
| Grade Elements | C(max) | Si(max) | Mn | P | S(max) |
| ST35 | 0.17 | 0.35 | ≥0.40 | 0.025 | 0.025 |
| ST42 | 0.21 | 0.35 | ≥0.40 | 0.025 | 0.025 |
| ST52 | 0.22 | 0.55 | ≤1.60 | 0.025 | 0.025 |
3. MECHANICAL PROPERTIES
Elongation(Min) Y.S (Min.) UTS (Min.)
≥15 470 N/MM2 580 N/MM2
4. SUPPLY CONDITION
Cold drawn seamless steel tube, stress relieved and honed or skived roller burnished
5. SURFACE ROUGHNESS
Ra = 0.4~0.8Micron
6. TOLERANCES ON INNER DIA
ISO H8 H9
7. STRAIGHTNESS
≤ 0.5 mm/M
8. ID TOLERANCE
| SIZE of I.D | I.D.Tolerance | Tolerance of wall thickness | ||
| H8 | H9 | H10 | ||
| 30 | +0.0330 | +0.0520 | +0.0840 |
<120mm(O.D) ±5% ≥120mm(D.D) to 210mm ±7.5% >210mm ±10% |
| >30-50 | +0.0390 | +0.0620 | +0.1000 | |
| >50-80 | +0.0460 | +0.0740 | +0.1200 | |
| >80-120 | +0.0540 | +0.0870 | +0.1400 | |
| >120-180 | +0.0630 | +0.1000 | +0.1600 | |
| >180-250 | +0.0720 | +0.1150 | +0.185 | |
| >250-315 | +0.0810 | +0.1300 | +0.2100 | |
| >315-400 | +0.0890 | +0.1400 | +0.2300 | |
9. LENGTH AND CUT TOLERANCE
Length ≤ 500mm , +2mm
500mm <Length ≤ 2000mm, +3mm
2000mm <Length≤ 5000mm, +5mm
5000mm < Length≤ 7000mm, +10mm
10. TUBE ENDS
Tube ends shall be cut nominally square to the axis and free from burs
11. 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.
12. CERTIFICATION
Material certificates will be send.
13. PACKING
Anti-rust oil to be applied on material. Ends closed by plastic cap . Bundled by steel strips,braiding parcel.
14. SCOPE
Hydraulic cylinder tube for swivel crane, injection machine and construction
15.Production Process:
Pretreatment : Pickling—Phosphating—Saponification
Cold drawn/cold rolled
Annealing furnace——+SR
Straightener—— Straightening
Straightness inspecting
Dimension inspecting
Sawing
SKIVING AND ROLLER BURNISHING (ZTG-2650 CNC SKIVING AND ROLLER BURNISHING MACHINE)
Products inspecting
- Finished Products
Xinpeng Have passed The ISO9001 2008
If any question, please feel free to send us inquiry!
Send Inquiry to This Supplier
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