H8-H9 Honed Steel Tube for Making Hydrocylinder Hydraulic RAM
Materials:20#,45#(CK45),16Mn(ST52),25Mn,27SiMn,E215,
E235,E355,ST35,ST45,ST52
Cylinder ID:40mm-500mm Wall Thickness:≥4mm
Specification
| Standard： GB/T871388,ISO4394/1-1980(EN10305/DIN2391) | Wall Thickness：≥4mm |
| Material： 20#,45#(CK45),16Mn(ST52),25Mn,27SiMn,E215, E235,E355,ST35,ST45,ST52 | Cylinder ID： 25-32mm,31x25mm,25.4x20mm |
Hydraulic Liner Actuator Standard
| Technology | Cylinder ID
(mm) |
Length
(mm) |
Straightness
(mm/m) |
Tolerance
on ID |
Tolerance
on WT |
Roughness (µm) |
|---|---|---|---|---|---|---|
| Cold drawn-honed |
40-500 |
8M | 0.2-0.3 | H8-H9 | ±5% | 0.2-0.8 |
Mechanical property
|
Final Supply Condition |
Cold finished(Hard)(BK) |
Cold drawn and stress relieved (BK+S) |
Hardness HB | |||
|
Parameters |
T.S Rm N/mm2 |
Elongation A5% |
T.S Rm N/mm2 |
Y.S ReH N/mm2 |
Elongation A5% |
|
|
20#(A106) |
≧550 |
≧8 |
≧520 |
≧470 |
≧12 |
175 |
|
45#(CK45) |
≧650 |
≧5 |
≧600 |
≧520 |
≧12 |
207 |
|
16Mn(ST52,E355) |
≧640 |
≧5 |
≧600 |
≧520 |
≧15 |
190 |
|
25Mn |
≧640 |
≧5 |
≧600 |
≧510 |
≧15 |
195 |
|
27SiMn |
≧840 |
≧5 |
≧800 |
≧720 |
≧10 |
230 |
Honed Steel Tube – Precision Engineering for High-Performance Applications
CBIES specializes in producing honed steel tubes, offering industry-leading solutions for hydraulic cylinders, pneumatic systems, and other high-performance applications. Focusing on precision, durability, and quality, our honed steel tubes undergo a series of advanced manufacturing processes to ensure they meet the most demanding requirements in industries such as automotive.
Our honed steel tubes are known for their superior internal surface finish, tight tolerances, and excellent mechanical properties. These make them ideal for applications where smooth motion, reliability, and efficiency are critical.
Key Features of Our Honed Steel Tubes:
Premium Raw Materials for Superior Strength and Durability
The performance of honed steel tubes begins with selecting high-quality raw materials. At CBIES, we use top-grade materials such as 45# steel, 27SiMn, and 25Mn to ensure that our tubes offer exceptional mechanical strength, toughness, and durability.
1. 45# Steel: Known for its high tensile strength and good wear resistance, 45# steel is ideal for honed tubes used in hydraulic and pneumatic applications.
2. 27SiMn: This alloy steel offers excellent toughness and fatigue resistance, making it suitable for high-stress applications such as hydraulic cylinders in construction machinery.
3. 25Mn: A manganese steel, 25Mn provides excellent ductility and weldability, ensuring that our honed tubes can be easily fabricated and integrated into complex systems.
Advanced Manufacturing Process for Precision and Performance
Our honed steel tubes undergo a series of meticulous steps to ensure they meet the highest standards of quality and precision. Each step is carefully controlled to achieve the required dimensional accuracy, internal surface finish, and mechanical properties.
1. Tempering for Material of 45#, 27SiMn, 25Mn: The raw materials are tempered to enhance their hardness, strength, and toughness. This heat treatment process ensures the tubes can withstand high pressures and mechanical stresses during operation.
2. Acid Cleaning: The tubes are thoroughly cleaned using an acid treatment to remove any impurities, rust, or scale from the surface, ensuring a clean and smooth surface for the subsequent processes.
3. Parkerizing & Saponifying: These surface treatments provide additional protection against corrosion and improve lubrication during the cold drawing process, resulting in a smoother finish and extended tube life.
4. Cold Drawn Process: The tubes are cold drawn to achieve the desired dimensions and surface finish. This process enhances the tube's dimensional accuracy, tensile strength, and surface quality, making it ideal for applications that require tight tolerances.
5. Leveling and Sawing Off Bad Sections: The tubes are leveled to ensure uniform straightness, and any sections with defects are removed to guarantee the integrity of the final product.
6. Tempering: After cold drawing, the tubes undergo a second tempering process to further improve their mechanical properties, such as toughness and ductility.
7. Honing: The honed steel tube is subjected to precision honing to achieve an ultra-smooth internal surface. This step is crucial for ensuring minimal friction and wear in hydraulic and pneumatic systems, where a smooth bore is essential for optimal performance.
Strict Quality Control and Inspection
At CBIES, we maintain the highest standards of quality control throughout the production process. Our honed steel tubes undergo rigorous inspections to ensure they meet the exact specifications and performance criteria required by our customers.
1. Dimensional Inspection: Every tube is measured to ensure it meets the precise dimensional tolerances needed for seamless integration into hydraulic and pneumatic systems.
2. Surface Finish Inspection: We inspect the internal surface finish to ensure it meets the smoothness standards required for efficient fluid movement and reduced wear.
3. Mechanical Testing: Our tubes are subjected to tensile and pressure tests to ensure they meet the required strength and durability specifications.
Final Finishing and Packing for Protection
To ensure that our honed steel tubes are ready for immediate use, we apply a series of protective coatings and proper packing methods:
1. Oil Plating: The tubes are coated with oil to protect them from corrosion during storage and transportation. This oil plating prevents oxidation and maintains the integrity of the tubes until they are ready for installation.
2. Packing: Our honed steel tubes are carefully packed in protective materials to prevent any damage during transit. Whether shipped domestically or internationally, we ensure that the tubes arrive in perfect condition, ready for immediate use.
Why Choose CBIES for Your Honed Steel Tubes?
1. Precision Engineering: Our advanced manufacturing processes ensure that every honed steel tube meets the highest standards for dimensional accuracy, internal surface smoothness, and mechanical strength.
2. Premium Materials: We use only the best raw materials, including 45# steel, 27SiMn, and 25Mn, to guarantee superior performance in demanding applications.
3. Comprehensive Quality Control: Every honed steel tube undergoes rigorous testing and inspection to ensure it meets or exceeds industry standards for performance and durability.
4. Custom Solutions: We offer customized tube dimensions, materials, and finishes to meet the unique requirements of your application, ensuring a perfect fit and reliable performance.
For more information about our honed steel tubes or to request a custom solution, contact CBIES today! We are committed to delivering high-quality products that meet our customer's exact specifications and performance needs.
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