En10305-4 Silver Galvanizing Hydraulic Metallic Steel Tube /Tubing

 The raw materials of hydraulic steel pipes are subject to fine drawing, oxidation free and bright heat treatment (NBK state), nondestructive testing, high pressure washing and acid cleaning of the inner holes of the steel pipes, antirust treatment of the inner and outer walls of the steel pipes with antirust oil, and dust treatment of the covers at both ends. The steel pipe produced has high precision and good finish. There is no oxide layer on the inner and outer walls of the steel pipe. The steel pipe can withstand the high pressure through which the liquid flows. The steel pipe is not deformed during cold bending, and can be flared and flattened without cracks. Mechanical properties can be bent without deformation at any angle. It is mainly used for preparing steel pipes in the oil circuit of the hydraulic system, also known as hard piping in the hydraulic system. The specification of precision steel pipes for automobiles is generally outer diameter (D) Φ 4mm-76mm, wall thickness (S) 0.5mm-6.0mm. The length is 6 meters (except customized), and the delivery status is NBK (normalizing), GBK (annealing), and BKS (stress relieving annealing). The main materials used are ST35, ST37.4 (10 #), ST45 (20 #), ST55 (35 #) and ST52 (16Mn), which can meet the requirements of customers with high precision, high finish, high tensile strength and high mechanical properties for steel pipes.

Description:

Norm DIN2391 EN10305, High quality carbon precision steel tubes St35 St37.4 St52, cold drawing, bright heat treatment without oxidation (NBK status), non-destructive testing, cleaning, phosphating, anti-rust oil dipping, the application for machine tools industry, construction machinery, ship building industry hydraulic system, automotive steel tube, and in the occasion where the high precision, brightness, cleanness and mechanical properties of the tube are required.

Features:

1. Materials and techincal

EN10305-4 Silver Galvanizing Hydraulic Metallic Steel Tube is usually made of high-quality carbon steel such as E235. In the manufacturing process, the steel pipe undergoes fine drawing, non-oxidation bright heat treatment (NBK state), non-destructive testing and other processes to ensure the high precision, high finish and good mechanical properties of the steel pipe. The silver galvanizing treatment not only improves the corrosion resistance of the steel pipe, but also gives it a silvery-white appearance, which improves the aesthetics.

2. Specifications and tolerances

These tubes are available in a wide range of sizes with a wide range of outer diameters, from a few millimeters to larger sizes. For steel pipes with different outer diameters, their tolerances are also clearly defined, which ensures the accuracy and quality of steel pipes. This high precision and tight tolerance control allows the pipes to be precisely docked in the hydraulic system, reducing the risk of leakage.

3. Surface treatment

The inner wall of the steel pipe is brushed with special equipment and washed by high pressure to ensure the cleanliness of the inner wall. The surface of the steel pipe is treated with silver galvanized and the two ends are capped and dust-proof, which effectively prevents the steel pipe from rusting and pollution. This surface treatment not only extends the life of the tube, but also improves the overall cleanliness of the system.

Application Areas

1. Automotive Industry: Used in automotive hydraulic systems, including power steering systems, brake lines, and suspension components, this metallic steel tube ensures reliable fluid transmission, precise control, and optimal vehicle performance and safety.

2. Aerospace Sector: Integrated into aircraft hydraulic systems, landing gear, and flight control mechanisms, this tubing provides critical fluid transmission capabilities, contributing to aircraft maneuverability, stability, and safety during flight operations.

3. Construction Machinery: Employed in construction equipment, such as excavators, cranes, and bulldozers, this metallic steel tube supports hydraulic systems for lifting, digging, and material handling applications, ensuring robust performance and reliability in demanding construction environments.

4. Industrial Machinery: Utilized in industrial hydraulic systems, including hydraulic presses, machine tools, and material handling equipment, this tubing facilitates precise fluid transmission for efficient operation and production processes in various manufacturing sectors.