Our Vacuum Bellows Hose is built for precision and durability in ultra-high vacuum (UHV) and high vacuum environments. Made from high-grade stainless steel, this corrugated metal hose ensures excellent flexibility while maintaining a leak-tight seal — making it ideal for sensitive vacuum applications in industries like semiconductor manufacturing, medical equipment, laboratory research, and aerospace.
The welded construction and optional ISO or CF flanges provide a secure and reliable connection, even under repeated thermal cycling or mechanical movement. With consistent wall thickness and smooth inner surfaces, our vacuum bellows minimize outgassing and support cleanroom-level standards.
Q&A Section
Q: Is this suitable for ultra-high vacuum (UHV) applications?
A: Yes, the hose is engineered to meet stringent vacuum standards and is available with UHV-compatible flanges and materials.
Q: Do you offer custom lengths and end fittings?
A: Absolutely. Length, diameter, flange type, and corrugation style can all be customized.
Q: How is it tested for vacuum sealing?
A: All assemblies undergo helium leak detection or vacuum integrity testing before shipment.
We possess comprehensive machining capabilities, including dedicated machining zones, CNC machining centers, mill-turn compound areas, vertical turning-milling sections, and floor-type boring sections. Our workshop is equipped with over 40 advanced machining units, such as large floor-type boring machines, vertical lathes, mill-turn compound machines, horizontal and vertical machining centers, deep hole boring machines, and vertical grinding machines.
We offer a wide range of standard hose end fittings to meet diverse industrial application needs. Our product lineup includes movable female threads with flat, ball, and flared ends (Types 1, 2, 6), welded metal hoses in both standard and flexible configurations (Types 3, 4), and flanged metal hoses for secure, high-pressure connections (Types 5, 14, 19). We also supply quick-connect fittings, including male and female types (Types 8, 11), and welded fixed male threads (Type 7). For specialized requirements, we provide H-type fittings with O-rings (Type 9), grooved metal hoses (Type 10), and food-grade inner connectors (Type 12). Our sanitary connection options include sanitary clamp fittings and clamp-type corrugated hoses (Types 13, 16), along with male and female thread clamp hoses (Type 17). Additional selections feature female threaded corrugated hoses (Type 15) and hydraulic joint hoses (Type 18). Each connector is engineered for reliability, pressure resistance, and compatibility across various systems.
*Regarding multi-layer welded Metal Bellows：
High Flexibility in Design Ratios:
Welded bellows can be designed with a relatively large ratio of outer diameter to inner diameter, typically ranging from 1.2 to 3, which allows for adjustable sensitivity based on application needs.
Exceptional Compression Capacity:
These bellows can achieve up to 80% compression, making them ideal for applications where structural space is limited but large stroke or displacement is required. The significant displacement capability also provides excellent volume compensation.
Long Service Life:
The service life of welded bellows varies depending on the application. When used as pressure sensing elements, their lifespan can reach approximately one million cycles under normal operating conditions.
Enhanced Pressure Resistance with Dual-Layer Structure:
To improve pressure resistance, dual-layer welded bellows have been developed, offering pressure endurance between 14 and 70 MPa. This design enables the bellows to effectively withstand both internal and external pressure, making them suitable for high-stress environments.