A seamless capillary tube is a slender tube with a very small inner diameter and a relatively larger outer diameter. It is widely used in fluid control, pressure sensing, instrumentation, and various industries such as chemicals, refrigeration, and more. Due to its characteristic of having no welded seams, a seamless capillary tube performs particularly well in applications that require high precision and stability.
High Precision and Stability
A seamless capillary tube does not have welded seams, which eliminates the potential issues of pressure fluctuations or leaks that may occur at welded joints. With its smooth inner walls, the fluid flow remains stable, reducing frictional resistance during flow and enhancing the accuracy of flow control.
Excellent Corrosion Resistance
A seamless capillary tube is typically made from materials with superior corrosion resistance, such as stainless steel, copper alloys, or titanium alloys. These materials allow the tube to operate reliably in highly corrosive environments, including strong acids, strong bases, and other aggressive media. This makes it particularly suitable for industries such as chemicals, petroleum, and marine environments.
Adaptability to Extreme Temperature Conditions
A seamless capillary tube maintains stable performance under extreme high or low-temperature conditions. It is widely used in processes that require resistance to high or low temperatures, such as refrigeration, aerospace, and oil extraction industries.
Enhanced Equipment Lifespan
By eliminating the potential defects associated with welded joints, a seamless capillary tube significantly improves the durability of the piping and extends the service life of equipment. Moreover, it possesses excellent fatigue resistance, allowing it to withstand prolonged pressure and temperature variations.
The manufacturing process of a seamless capillary tube is relatively complex and involves several key steps:
Raw Material Selection and Preparation
The raw materials used to manufacture a seamless capillary tube are typically high-strength, corrosion-resistant metals such as stainless steel, copper, or titanium alloys. The materials generally start as billets of steel, copper, or aluminum before entering the production process.
Forging and Extrusion
The raw material undergoes forging and extrusion at high temperatures, gradually forming the tube to the required dimensions and shape. During this process, the inner diameter of the tube is precisely controlled to ensure it meets specific application requirements.
Drawing and Cooling
To achieve more precise dimensions and a smooth surface, the capillary tube undergoes a drawing process. Drawing helps reduce the wall thickness of the tube and achieve a finer inner diameter. Afterward, the tube is rapidly cooled to ensure the mechanical properties and surface quality of the material.
Surface Treatment and Inspection
Finally, the capillary tube undergoes surface treatments such as cleaning and polishing to remove impurities and enhance the surface finish. Throughout the manufacturing process, strict quality checks are performed, including visual inspections, inner diameter measurements, and pressure strength tests, to ensure that each seamless capillary tube meets the required standards.
JWB, as a leading company in the field of seamless capillary tubes, is committed to providing high-quality products to its customers. We use advanced manufacturing processes and strictly control the selection of raw materials and the processing stages, ensuring that each seamless capillary tube meets international standards and exceeds customer expectations.
