DIN2391 Cold Drawn Seamless Honed Tubing
Seamless Honed Tubing Features & Specification
Production Introduction:
Steel: Seamless Carbon Steel & Alloy Steel
Shape: Round
Standard: DIN2391, EN10305, ASTMA519, GB/T3639-2000
Material: C20, CK45, Q355B, Q355D, E355 (ST52), SAE1026, SAE4130, SAE4140, STKM 13C.
Salty spray test: ≥ 120hours
Size: Outside Diameter (OD): 40.0mm~1000.0mm, Inner Diameter (ID): 30.0mm~700.0mm
Length: Fixed Length, Random Length: 3-9m or as requests of customers
Surface Treatment: Surface treatment of the inner wall of seamless honed tubing. There are cold rolling, honing, scraping rolling
Sample: We can provide carbon seamless hydraulic cylinder tube samples for trial.
Chemical Composition of Honed Tubing:
| Steel Grade | Chemical Composition% | ||||||
| C | Si | Mn | P | S | Cr | Ni | |
| C20 | 0.17~0.23 | 0.17~0.37 | 0.35~0.65 | ≤0.035 | ≤0.035 | ≤0.025 | ≤0.025 |
| CK45 | 0.42~0.5 | 0.17~0.37 | 0.5~0.8 | ≤0.025 | ≤0.020 | ≤0.025 | ≤0.030 |
| E355/ST52 | ≤0.22 | 0.20~0.60 | 1.20~1.60 | ≤0.025 | ≤0.025 | ≤0.025 | ≤0.025 |
Mechanical Property of Seamless Steel Honed Tube:
| Processing | ID mm | Length/m | Straightness/mm | ID Tolerance | Roughness(μm) |
| Honed | 40.0~500.0 | ≤12m | 0.5-1/1000 | H8-H9 | 0.4-0.8μm |
| Skived Rolling Burnished | 50.0~250.0 | ≤9m | H8 | 0.1-0.4μm |
Tolerance of Honed Tube for Hydraulic Cylinder:
| ID/mm | Tolerance/mm | WT Tolerance | ||
| H8 | H9 | H10 | ||
| 30 | 0.033 | 0.052 | 0.084 | ＜120mm(OD) ±5%, 120mm to 210mm ±7.5%, ＞210mm ±10% |
| 30~50 | 0.039 | 0.062 | 0.1 | |
| 50~80 | 0.046 | 0.074 | 0.12 | |
| 80~120 | 0.054 | 0.087 | 0.14 | |
| 120~180 | 0.063 | 0.1 | 0.16 | |
| 180~250 | 0.072 | 0.115 | 0.185 | |
| 250~315 | 0.081 | 0.13 | 0.21 | |
| ＞315 | 0.089 | 0.14 | 0.23 | |
Advantages of Cold Drawn Seamless Honed Tubing:
- Precise size: The inner diameter of the hydraulic cylinder honed tubing is relatively accurate and can be perfectly matched with the piston rod.
- Smooth inner wall: Smooth surface: The inner wall is relatively smooth, which helps to reduce the friction loss generated during the operation of the hydraulic cylinder or pneumatic cylinder.
- Seamless structure: The pipe has no welds and has higher tensile strength and pressure resistance.
- Good sealing performance
Process of Seamless Hydraulic Honed Tubing
Cold drawing or rolling: precision forming, high strength and good uniformity.
Honing process: achieve smooth and precise inner surface.
Skiving: through the combination of skiving and Rroller burnishing, the inner wall surface is made smoother and more uniform, while improving the surface hardness and fatigue resistance.
Application of Honed Hydraulic Tube
Seamless carbon or alloy honed tube is the raw material for making hydraulic cylinders and pneumatic cylinders.
Hydraulic cylinders: various mechanical products such as engineering construction machinery, agricultural machinery, mining machinery, etc.
Industrial equipment: improve the performance of lifting systems, presses and custom engineering projects.
Cylinders: support high-precision automation in robots, assembly lines and manufacturing systems.
Automotive industry: provide durability and accuracy for shock absorbers, brake systems and suspension components.
Hydraulic Cylinder
Machinery Telescopic Cylinder
Large Hydraulic Cylinder
Factory of Seamless Steel Honed Tubing
We are a leading manufacturer and supplier of EN1305 DIN2391 honed tube in China. Our factory has more than fifteen years of export experience, has advanced production equipment, and has cooperated with customers in more than forty countries. We have precision seamless hydraulic tube, honed pipes, tube assembly and other product.
Cold Drawn
Workshop
