Hydraulic seamless pipe are an essential component in hydraulic systems, which are used in a wide range of industrial applications, such as construction equipment, manufacturing machinery, and transportation vehicles. These tubes are designed to withstand high pressure and provide reliable, leak-free performance in harsh environments. One of the most widely used standards for hydraulic seamless tubes is DIN 2391. In this article, we will discuss the key features, benefits, and applications of hydraulic seamless tubes as per DIN 2391.

DIN 2391 is a standard for seamless precision steel tubes that are used in hydraulic and pneumatic power systems. The standard specifies the technical delivery conditions for cold-drawn seamless steel tubes of circular cross-section for precision applications. DIN 2391 tubes are characterized by their high dimensional accuracy, excellent surface quality, and good mechanical properties, which make them suitable for use in hydraulic systems. 

The tubes are manufactured using a cold drawing process, which involves pulling the tube through a die to reduce its diameter and thickness. This process results in a tube with a smooth and uniform surface finish, free from any surface defects. The tubes are also annealed to remove any stresses and improve their mechanical properties, such as hardness, tensile strength, and yield strength.

The tubes are available in various grades, such as St 30 Si, St 30 Al, St 35, St 45, St 52, and other special alloys, depending on their intended application. The material used for manufacturing the tubes is selected based on its mechanical properties, corrosion resistance, and compatibility with hydraulic fluids.

Advantages of Seamless Hydraulic Tubes as per DIN 2391/C 

Hydraulic seamless tubes as per DIN 2391 have several advantages over other types of tubes. Some of these advantages are:

1. 1. High dimensional accuracy: DIN 2391 tubes have tight dimensional tolerances, which ensure their precise fit and compatibility with hydraulic components. This feature also makes them ideal for use in high-precision applications.

1. 1. Excellent surface quality: The tubes have a smooth and uniform surface finish, free from any surface defects, such as scratches, pits, or cracks. This feature reduces the risk of corrosion, fatigue, and wear, and ensures their long service life.

1. 1. Good mechanical properties: The tubes have good mechanical properties, such as high hardness, tensile strength, and yield strength, which make them suitable for use in high-pressure hydraulic systems.

1. 1. Corrosion resistance: The tubes are made from corrosion-resistant materials, such as stainless steel or special alloys, which make them suitable for use in corrosive environments.

1. 1. Easy to install: The tubes can be easily installed using various types of fittings, such as compression fittings, flare fittings, or welded fittings, which makes them suitable for a wide range of applications.

Applications of Seamless Hydraulic Tubes DIN 2391/C

Hydraulic seamless tubes as per DIN 2391 are used in a wide range of industrial applications, such as:

1. 1. Hydraulic systems: The tubes are used in hydraulic systems, such as hydraulic cylinders, pumps, and valves, where they provide reliable and leak-free performance.

1. 1. Pneumatic systems: The tubes are also used in pneumatic systems, where they are used to transport compressed air or gases.

1. 1. Automotive industry: The tubes are used in the automotive industry, where they are used in fuel injection systems, power steering systems, and brake systems.

1. 1. Construction equipment: The tubes are used in construction equipment, such as cranes, excavators, and bulldozers, where they are used in hydraulic cylinders and other hydraulic components.

1. 1. Manufacturing machinery: The tubes are used in manufacturing machinery, such as presses, lathes, and milling machines, where they are used in hydraulic and pneumatic systems.