Independent Development and Continuous Improvement of Stainless Steel Cylinder Tubes

09 Feb,2022

Independent Development and Continuous Improvement of Stainless Steel Cylinder Tubes

Stainless steel cylinder tube It is a high-precision steel pipe material produced by cold drawing or hot rolling. Thanks to the absence of an oxide layer on both the inner and outer surfaces, it offers excellent leak‑tightness under high pressure, superior dimensional accuracy, and exceptional surface finish. It exhibits no deformation during cold bending, flaring, or flattening, and remains free of cracks. Primarily used in the manufacture of pneumatic and hydraulic components such as cylinders and hydraulic cylinders, it can be supplied as seamless tubing.

vCnEiLx5QgiBF_hyvj6Z9A.jpg

Stainless steel forms a thin, robust, fine, and stable chromium-rich oxide film (a protective layer) on its surface, which prevents the continuous penetration of oxygen atoms and oxidation. Once this film is repeatedly damaged for some reason, oxygen atoms from the air or liquid will continue to penetrate, or iron atoms within the metal will continue to separate, forming loose iron oxide; as a result, the metal surface will keep rusting.

Dust containing other metallic elements or foreign metal particles adheres to the surface of stainless steel. In humid air, condensation between these deposits and the stainless steel forms micro‑batteries, triggering electrochemical reactions that degrade the protective oxide film—this phenomenon is known as electrochemical corrosion.

Use a Rockwell hardness tester to measure HRB and HRC hardness. For seamless steel tubes with an inner diameter greater than 30 mm and a wall thickness less than 1.2 mm, a superficial Rockwell hardness tester should be used to determine HRT or HRN hardness. For seamless steel tubes with an inner diameter between 4.8 mm and 0 mm, a pipe‑type Rockwell hardness tester is employed to measure HR15T hardness.

Stainless steel cylinder tubes, cylinder end caps, piston rods, and other components are all featured on our website. However, these items will be discussed in the following sections, as detailed product descriptions for stainless steel cylinder tubes will be provided below. Therefore, let’s begin one by one with the cylinder tubes, so that everyone can gain a deeper understanding of our website’s offerings and expand their knowledge.

Stainless steel cylinder tube It can be regarded as a high-precision steel pipe material, typically produced by cold drawing or hot rolling. Its chemical composition primarily includes carbon, silicon, manganese, sulfur, phosphorus, and chromium.

In general, the main advantages of stainless steel cylinder tubes are as follows:

(1) It can improve surface roughness and correct roundness or ovality.

(2) It can increase surface hardness and fatigue strength, and eliminate stress-induced deformation.

(3) It can improve mating quality, reduce wear, and extend service life.

Stainless steel cylinder tube The interior generally consists of three components: the end cover, the piston, and the piston rod; here is a brief description.

(1) End Cover

Typically, end caps are equipped with air inlet and outlet ports, and some also incorporate cushioning mechanisms. For rod-side end caps, additional sealing rings and dust seals are provided to prevent dust and foreign particles from entering the cylinder. In the past, end caps were made of malleable cast iron; today, they are manufactured via aluminum alloy die casting, which reduces weight and helps prevent rust.

(2) Piston

It is a pressure-bearing component and is equipped with a wear ring and a piston seal. The wear ring enhances cylinder guidance and reduces frictional resistance. Its material is primarily synthetic resin.

(3) Piston Rod

It is also a pressure-bearing component, manufactured from high-carbon steel or stainless steel, with the high-carbon steel surface plated with hard chrome.


Previous:

Stainless Steel Cylinder Tube Machining Process

Next:

What are the excellent performance characteristics of stainless steel cylinder tubes?