NEWS CENTER LOCATION:HOME > NEWS CENTER > NEWS > Hydraulic steel tube sizes|Hydraulic steel tubing sizes

Hydraulic steel tube sizes|Hydraulic steel tubing sizes

Hydraulic steel tubes are essential components in hydraulic systems, pneumatic systems, and other high-pressure fluid transmission applications. They are designed to withstand the demanding conditions of fluid transport, making them crucial for various industries, including automotive, aerospace, construction, and manufacturing.

Introduction to Hydraulic Steel Tube Sizes:

Hydraulic steel tube sizes refer to the different dimensions and specifications of steel tubes used in hydraulic applications. These tubes are carefully manufactured to meet precise requirements, ensuring optimal performance and safety in hydraulic systems. The sizes of hydraulic steel tubes are critical factors that determine their compatibility with fittings, connectors, and overall system efficiency.

Common Hydraulic Steel Tube Sizes:

Hydraulic steel tubes come in a wide range of sizes, each catering to specific applications and pressure requirements. The most common sizes include:

1. Outer Diameter (OD): The outer diameter is the measurement of the tubes outside surface. Common OD sizes for hydraulic steel tubes range from small diameters, such as 6mm (0.24 inches), to larger diameters, like 50mm (1.97 inches) or more.

2. Wall Thickness:The wall thickness of hydraulic steel tubes is a crucial factor in determining their strength and pressure-handling capacity. It is typically denoted in millimeters or inches. Common wall thicknesses range from 1mm (0.04 inches) to 5mm (0.20 inches) or more, depending on the tubes OD and application requirements.

Metric Sizes Hydraulic Steel Tube

Outside Diameter (OD) in Millimeters (mm)

Wall Thickness in Millimeters (mm)

Example Combinations (OD x Wall Thickness)

4 mm

0.5 mm


6 mm

1.0 mm

6 mm x 1.0 mm

8 mm

1.5 mm


10 mm

2.0 mm

10 mm x 1.5 mm

12 mm

2.5 mm

12 mm x 2.0 mm

14 mm

3.0 mm


16 mm

3.5 mm

16 mm x 2.5 mm

18 mm

4.0 mm


20 mm

5.0 mm

20 mm x 3.0 mm

22 mm

6.0 mm


25 mm

8.0 mm

25 mm x 4.0 mm

28 mm

10.0 mm


30 mm


30 mm x 5.0 mm

32 mm


35 mm


38 mm


42 mm


50 mm


60 mm


76 mm


89 mm


Imperial Sizes Hydraulic Steel Tube

Outside Diameter (OD) in Inches

Wall Thickness in Inches

Example Combinations (OD x Wall Thickness)

1/8" (0.125")


1/8" x 0.028"

3/16" (0.1875")



1/4" (0.25")


1/4" x 0.035"

5/16" (0.3125")



3/8" (0.375")


3/8" x 0.049"

1/2" (0.5")


1/2" x 0.065"

5/8" (0.625")



3/4" (0.75")


3/4" x 0.083"

7/8" (0.875")



1" (1.0")


1" x 0.095"

1-1/4" (1.25")



1-1/2" (1.5")


1-1/2" x 0.120"

2" (2.0")


2" x 0.156"

2-1/2" (2.5")


3" (3.0")


4" (4.0")


Shapes and Lengths of Hydraulic steel tubes:

Hydraulic steel tubes are available in two primary shapes: seamless and welded.

1. Seamless Tubes: Seamless hydraulic steel tubes are manufactured without any welding joints, providing higher strength, uniformity, and reliability. They are ideal for applications where smooth internal surfaces and resistance to high pressure and corrosion are required.

2. Welded Tubes: Welded hydraulic steel tubes are made by welding the edges of a flat strip to form a tube. While they may have a lower cost, welded tubes are generally not as strong as seamless ones and are more susceptible to corrosion and leaks at the weld seam.

Hydraulic steel tubes are commonly available in standard lengths, such as 6 meters (20 feet) or 12 meters (40 feet). However, custom lengths can be manufactured to meet specific project requirements.

Hydraulic steel tubes are essential components in hydraulic systems, designed to withstand high pressure and ensure fluid conveyance with minimal resistance. These tubes come in a variety of sizes to suit different applications, typically measured by their outer diameter (OD) and wall thickness. Standard sizes range from small diameters like 6 mm OD with a 1 mm wall thickness, suitable for precision instruments, to larger diameters such as 50 mm OD with a 4 mm wall thickness, used in heavy-duty machinery. The tubes are manufactured to tight tolerances, ensuring consistency and reliability in demanding environments, and are often available in both metric and imperial measurements to accommodate global industry standards.

Hydraulic steel tubing

Hydraulic steel tubing

  • Name*
  • Tel
  • Comapny*
  • Email*
  • Subject*