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Zhucheng Yongbang is a professional manufacturer of stainless steel vacuum bellows,corrugated hoses and other standard vacuum fittings.We make vacuum bellows range from DN6 to DN300 mm.Our products are widely used in vacuum equipment, vacuum coating engineering, vacuum pump system,semiconductor industry and other industries.
Yongbang has the experience, engineering knowledge and production capability to design and fabricate different kinds of vacuum bellows to meet your specific requirements. The design,production and quality control of our products are strictly on the basis of vacuum standards.
In the recent years, the company has been committed to the research of new product and development of quality, and our market is rising.We are looking forward to forming successful business relationships with new clients around the world in the future.






KF(Quick Flange) are ISO standard vacuum fittings and have a flange size of KF10,KF-16,KF-25,KF-40,KF50.They are commenly used to build foreline vacuum plumbing and process systems.They are quick to assemble and require no tools for assembly.A C-clamp and centering Oring form the vacuum seel between the connecting flanges.The mating flanges compress an Oring while the C-clamp is tightened.This seals the connection and allows the vacuum pump to create the vacuum.The seal can be use in vacuum applications up to 10-8Torr.KF Quick Flange Fittings are made of type 304 stainless steel and some fittings come in aluminum.
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