Views: 0 Author: Site Editor Publish Time: 2025-06-27 Origin: Site
EN 10305-4 is a European standard that specifies the technical delivery conditions for cold-drawn seamless precision steel tubes used in hydraulic and pneumatic systems. These tubes are known for their high dimensional accuracy, excellent surface finish, and superior mechanical properties, making them ideal for high-pressure applications.
Many professionals and engineers search for information about EN 10305-4 hydraulic tubing to understand its properties, applications, and advantages. Below, we address the three most common Google search questions related to this standard.
EN 10305-4 is part of a series of European standards (EN 10305) that define the requirements for precision steel tubes. Specifically, EN 10305-4 covers cold-drawn seamless tubes intended for hydraulic and pneumatic systems.
Material Grades: Typically made from carbon steel (E235, E355) or alloy steel.
Manufacturing Process: Cold-drawn to ensure tight tolerances and smooth surfaces.
Dimensional Accuracy: Strict outer diameter (OD) and wall thickness tolerances for leak-proof connections.
Surface Finish: Smooth internal and external surfaces to minimize friction and wear.
Pressure Resistance: Designed to withstand high-pressure hydraulic systems.
Hydraulic cylinders and pistons
Pneumatic systems
Industrial machinery
Automotive and aerospace hydraulic systems
EN 10305-4 tubes are preferred in applications where precision, durability, and pressure resistance are critical.
Several standards govern hydraulic tubing, including:
EN 10305-4 (Cold-drawn seamless precision tubes for hydraulic systems)
EN 10305-1 (Cold-drawn seamless tubes for general purposes)
DIN 2391 (German standard for precision steel tubes)
ASTM A519 (American standard for seamless carbon and alloy steel tubes)
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Feature | EN 10305-4 | EN 10305-1 | DIN 2391 | ASTM A519 |
Application | Hydraulic & pneumatic | General mechanical use | Precision engineering | General mechanical use |
Tolerances | Very tight (±0.05mm OD) | Standard (±0.1mm OD) | Tight (±0.07mm OD) | Moderate tolerances |
Surface Finish | Smooth, burr-free | Standard finish | Smooth, high precision | Varies by grade |
Pressure Rating | High-pressure capable | Medium-pressure use | High-pressure capable | Depends on material |
Better for Hydraulics: Specifically designed for high-pressure hydraulic systems.
Superior Tolerances: Ensures leak-proof fittings and connections.
Consistency: Strict quality control for reliability in critical applications.
Choosing the correct hydraulic tubing involves considering several factors:
E235 (1.0308): Good weldability, moderate strength (suitable for low to medium pressure).
E355 (1.0580): Higher strength, better for high-pressure systems.
Outer Diameter (OD): Must match system requirements (common sizes: 6mm to 100mm).
Wall Thickness: Affects pressure resistance (standard range: 1mm to 10mm).
Length: Available in fixed lengths or customized cuts.
Max Working Pressure: Depends on tube dimensions and material.
Temperature Range: Typically -20°C to +120°C (higher for special grades).
Phosphating: Improves corrosion resistance.
Galvanizing: For outdoor or corrosive environments.
Oiled Finish: Prevents rust during storage.
Ensure the supplier provides:
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Mill Test Certificates (MTC)
Hydraulic pressure test reports
Ultrasonic testing (if required for critical applications)
EN 10305-4 hydraulic tubing is a high-performance solution for precision hydraulic and pneumatic systems. Its tight tolerances, superior surface finish, and pressure resistance make it a preferred choice in industries requiring reliability and efficiency.
When selecting EN 10305-4 tubes, consider material grade, dimensions, pressure requirements, and additional treatments to ensure optimal performance. Comparing it with other standards like DIN 2391 or ASTM A519 helps determine the best fit for your application.
For engineers and procurement specialists, understanding these key aspects ensures the right tubing selection, minimizing system failures and maximizing operational efficiency.
