EN 10305-4 Precision Seamless Tube for Hydraulic and Pneumatic Systems
- OD: 4 – 80mm
- WT: 0.5 – 12.5mm
- Grade: E215, E235, E355
EN 10305-4 Precision Seamless Tube for Hydraulic and Pneumatic Systems
EN 10305-4 Precision seamless tubes are essential components in hydraulic and pneumatic systems, renowned for their high precision, exceptional surface finish, and stringent dimensional tolerances. Manufactured to meet the rigorous demands of these systems, these tubes are designed to ensure efficient fluid power transmission, minimize leakage, and reduce pressure drops, making them indispensable in various industries such as automotive, aerospace, marine, and heavy machinery. The superior quality of EN 10305-4 tubes enables them to perform reliably in critical applications, including hydraulic cylinders, pneumatic actuators, and control systems, where durability and performance are paramount. Their consistent quality and performance make them a preferred choice for engineers and manufacturers seeking to optimize system efficiency and longevity.
Chemical Composition of EN 10305-4 Precision Seamless Tube for Hydraulic and Pneumatic Systems
Steel Grade | Steel Number | C max (%) | Si max (%) | Mn max (%) | P max (%) | S max (%) | Al (total) min (%) |
E215 | 1.0212 | 0.10 | 0.05 | 0.70 | 0.025 | 0.025 | 0.025 |
E235 | 1.0308 | 0.17 | 0.35 | 1.20 | 0.025 | 0.025 | 0.015 |
E355 | 1.0580 | 0.22 | 0.55 | 1.60 | 0.025 | 0.025 | – |
Mechanical Properties of EN 10305-4 Precision Seamless Tube for Hydraulic and Pneumatic Systems
Steel Grade | Delivery Condition | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
E215 | BK | 320-520 | ≥215 | ≥6 |
BKW | 290-450 | ≥195 | ≥12 | |
BKS | 290-450 | ≥195 | ≥12 | |
GBK | 290-430 | ≥185 | ≥30 | |
NBK | 290-430 | ≥185 | ≥30 | |
E235 | BK | 350-580 | ≥235 | ≥6 |
BKW | 315-490 | ≥215 | ≥12 | |
BKS | 315-490 | ≥215 | ≥12 | |
GBK | 315-450 | ≥195 | ≥25 | |
NBK | 315-450 | ≥195 | ≥25 | |
E355 | BK | 550-750 | ≥355 | ≥5 |
BKW | 510-710 | ≥335 | ≥8 | |
BKS | 510-710 | ≥335 | ≥8 | |
GBK | 490-630 | ≥315 | ≥20 | |
NBK | 490-630 | ≥315 | ≥20 |
Specifications
Standard | EN 10305-4 Precision Seamless Tube for Hydraulic and Pneumatic Systems |
Steel Grade/Material | E215, E235, E355 |
Outside Diameter (OD) | 4 – 80mm |
Wall Thickness (WT) | 0.5 – 12.5mm |
Length | 500 – 10000mm |
End | Plain Ends |
Packing | Typically, they are packed in protective wrapping with plastic end caps, bundled with straps, or placed in wooden or plastic crates. They are often palletized and labeled to ensure safe transportation and storage. |
Section Shape | Round |
Technique | Seamless Cold-Drawn |
Place of Origin | Made in China |
MOQ | 3 Ton/Size |
Transportation | Land transportation is by truck or train, and sea transportation is by container ship or bulk ship. |
Delivery Condition | Symbol | Description |
As-drawn | BK | No heat treatment after the last cold drawing pass |
Cold-finished, soft | BKW | After the previous heat treatment, a slight cold drawing |
Annealed | GBK | After the final cold drawing process, the tubes are annealed in a controlled atmosphere. |
Stress-relieved | BKS | After the final cold drawing process, the tubes are stress-relieved in a controlled atmosphere. |
Normalized | NBK | After the final cold drawing operation, the tubes are normalized in a controlled atmosphere. |
Applications of EN 10305-4 Precision Seamless Tube for Hydraulic and Pneumatic Systems
Hydraulic Systems:
Hydraulic Cylinders: Used for converting fluid power into linear motion and force.
Hydraulic Lines: Serve as pipelines for transporting hydraulic fluids with minimal leakage and pressure drop.
Hydraulic Accumulators: Utilized to store energy in the form of pressurized fluid.
Pneumatic Systems:
Pneumatic Cylinders: Act as the main body, converting compressed air into mechanical motion.
Pneumatic Actuators: Ensure accurate and smooth movement in mechanical operations.
Pneumatic Control Systems: Connect components for quick, efficient airflow with minimal pressure loss.
Automotive and Industrial Machinery:
Brake and Clutch Systems: Ensure reliable hydraulic pressure transmission in automotive applications.
Heavy Machinery: Used in hydraulic systems for operating, lifting, digging, and other heavy-duty functions.
Aerospace and Defense:
Landing Gear Systems: Operate hydraulic circuits for safe deployment and retraction.
Control Systems: Employed in control systems requiring precise fluid control.
Marine Applications:
Marine Engineering: Operate steering, anchor handling, and other vital marine equipment resistant to corrosion and high pressure.
Medical Equipment:
Medical Devices: Used in ventilators and anesthesia machines for accurate and reliable fluid delivery.