Description
27SiMn Hydraulic Cylinder Steel Tube – Skiving Tube – Precision Honed Tube DIN 2391 BKS
Dimensions:
- Outer Diameter (O.D): 20 mm – 520 mm
- Inner Diameter (I.D): 12 mm – 510 mm
Tolerances and Specifications:
- I.D Tolerance (mm): H7 – H10
- Roughness (I.D): ≤ 0.3 μm
- Straightness: 0 – 0.60 mm/meter
- Minimum Order Quantity (MOQ): 1.0 – 3.0 tons
Inspection and Quality Control:
- Inspections include: Chemical analysis, Mechanical analysis, Roughness, Straightness, Surface quality, and Dimension report.
- Third-party inspection is acceptable.
Origin:
- Place of Origin: Jiangsu/Hubei, China
Applications of 27SiMn Hydraulic Cylinder Steel Tube
The 27SiMn hydraulic cylinder steel tube is utilized in various applications, including:
- Hydraulic cylinders
- Hydraulic jacks
- Hydraulic oil cylinders
- Pneumatic cylinders
- Swivel cranes
- Injection machines
- Petrifaction oil pumps
- Coal mining machinery
- Engineering machinery
- Crane and transport machinery
- Auto transmission axes
- Plastic machinery
- Absorbers
- Spin printing and dyeing
Quality Standards
Our honed tubes adhere to the following quality standards:
- DIN 2391: Seamless Precision Steel Tubes
- EN 10305: Steel Tubes for Precision Applications Seamless Cold Drawn Tubes
Chemical Composition (%)
| Steel Grade | C | Si | Mn | P | S |
|---|---|---|---|---|---|
| 27SiMn | 0.24 – 0.32 | 1.10 – 1.40 | 1.10 – 1.40 | 0.035 max | 0.040 max |
Tolerances for Inner Diameter (mm)
| Inner Diameter Range (mm) | H7 | H8 | H9 | H10 |
|---|---|---|---|---|
| 10 < ID ≤ 18 | -0, +0.018 | -0, +0.027 | -0, +0.043 | -0, +0.070 |
| 18 < ID ≤ 30 | -0, +0.021 | -0, +0.033 | -0, +0.052 | -0, +0.084 |
| 30 < ID ≤ 50 | -0, +0.025 | -0, +0.039 | -0, +0.062 | -0, +0.100 |
| 50 < ID ≤ 80 | -0, +0.030 | -0, +0.046 | -0, +0.074 | -0, +0.120 |
| 80 < ID ≤ 120 | -0, +0.035 | -0, +0.054 | -0, +0.087 | -0, +0.140 |
| 120 < ID ≤ 180 | -0, +0.040 | -0, +0.063 | -0, +0.100 | -0, +0.160 |
| 180 < ID ≤ 250 | -0, +0.046 | -0, +0.072 | -0, +0.115 | -0, +0.185 |
| 250 < ID ≤ 315 | -0, +0.052 | -0, +0.081 | -0, +0.130 | -0, +0.210 |
| 315 < ID ≤ 400 | -0, +0.057 | -0, +0.089 | -0, +0.140 | -0, +0.230 |
| 400 < ID ≤ 500 | -0, +0.063 | -0, +0.097 | -0, +0.155 | -0, +0.250 |
