DIN2391 Honed Hydraulic Cylinder Tube Cold Drawn Seamless Steel
| Standard | DIN2391, EN10305, DIN17175 etc |
| Size | OD: 40-400mm WT: 5-40mm Length : Random (5-7m) or Fixed length as per order of confirmation |
| Material | ST45, ST52, E355, E355SR, STKM13C, SAE1026, 20#, Q235B, CK45, CK20, 16Mn, 27SiMn |
| Supply Condition | BK(+C), BK+S (+SR) |
| Technology | Honed & SRB (SKIVED AND ROLLER BURNISHED ) |
| Polishing | To 0.4Ra Max |
| Tolerance | Inner Diameter: ISO H8 Wall Thickness: Diameter ＞40, ±0.2mm; Diameter 40-100, ±0.3mm; Diameter ＞100, ±0.5mm |
| Application | For hydraulic cylinder, swivel crane, injection machine and construction machine application |
| Protection | The tubes are supplied with caps at the ends and protected internally an externally with that provide stemporary protection against oxidization. Special surface protection can be agree upon. |
Chemical Composition
| Grade | C | Si | Mn | P≤ | S≤ | Cr≤ |
| ST45 | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 | 0.025 |
| ST52(E355) | ≤0.22 | ≤0.55 | ≤1.6 | 0.025 | 0.025 | 0.025 |
| SAE1026 | 0.22-0.28 | 0.15-0.35 | 0.60-0.90 | 0.040 | 0.050 | / |
| 27SiMn | 0.24-0.32 | 1.10-1.40 | 1.10-1.40 | 0.035 | 0.035 | 0.030 |
| 20# | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 | 0.025 |
QUALITY CONTROL:
1. Incoming Raw Material Inspection
2. Raw Material Segregation to avoid steel grade mix-up
3. Heating and Hammering End for Cold Drawing
4. Cold Drawing and Cold Rolling, on line inspection
5. Heat Treatment, +A, +SRA, +LC, +N, Q+T
6. Straightening-Cutting to specified length-Finished Measuring Inspection
7. Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8. Packing and Stocking
100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
100% eddy current test and ultrosonic test to eliminate longitudinal and transversal defects.
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Q: Are you trading company or manufacturer ?
A: A professional steel pipes materials inventor, manufacturer and solution provider
Q: How long is your delivery time?
A: Generally it is 7-14 days if the goods are in stock. or it is 30-60 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples of carbon seamless steel tube ? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us
TORICH DIN2391 Stainless Steel Hydraulic Cylinder Honed Tube BK+S
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