About Hyspan

Dannenbaum LLC is a supplier of Hyspan.

Hyspan was founded in 1968 with great engineering. Also quality and production capability to design. And develop and fabricate metal bellows and hose. And assemblies and products that incorporate these components.

Hyspan used hard work and skill. Therefore, they were able acquire related products and companies. Thus forming an organization of multiple divisions. These organizations produce a line of flexible tubular products. Furthermore, they meet the needs of diverse industries. Thus ranging from scientific research to oil refining.

Hyspan’s headquarters in Chula Vista. California provides financial services, corporate management and corporate engineering. Also provides administration of the employees retirement program. Furthermore, it provides location of the sales and engineering staff for Hyspan and Barco products. Moreover, the facility that manufactures custom designed expansion joints, prototype bellows products, and all defense products.


Firstly, Universal Metal Hose subsidiary located in Chicago, Illinois. Also it was founded in 1942. Then purchased by in 1995. Secondly, Hyspan purchased 2000 Anamet Industrial Inc., formally Anaconda Metal Hose in Waterbury, Connecticut,. Also, Universal is headquartered in South Holland, Illinois. In addition to the sales and engineering office, this location manufacturers corrugated and strip wound hose and assemblies for industrial and automotive applications.

Also, in 1998 Hyspan formed a wholly owned subsidiary. They are a supplier of metal expansion joints. Hyspan de Mexico, located near Tijuana, Mexico. This is to and from the plant on a duty free basis. Also this qualifies the plant’s products under NAFTA. In Mexico we have complete bellows fabrication, machining, welding and testing capability.

In 2004 we purchased Flexible Metal Inc., formally Flexible Metal Hose in Tucker, Georgia. The company has extensive engineering capability with complete fabrication facilities including bellows hydroforming and cell manufacturing processes.

Hyspan is a member of the Expansion Joint Manufacturers Association, Inc. (EJMA), an organization devoted to the development of design methods for metal bellows and related products.