Zhengzhou Hola Business Co.,Ltd

Most of our metal expansion bellows have been in use for decades. They ensure trouble-free operation. Example applications include mechanical engineering, industrial equipment construction and pipeline construction. In the chemicals industry, plant engineering, gas and water supply, building services engineering and exhaust systems engineering, etc. Advantages: Compensate motion/expansion Reduce tension Damp vibration and noise transmissions Compensate ground and foundation settling Compensate inaccurate assembly Wide Size and Service Range The metal expansion joint, also called expansion bellows are compensating elements for thermal expansion and relative movement in pipelines, containers and machines. They consist of one or more metal bellows, connectors at both ends, and tie rods that depend on the application. They are differentiated according to the three basic types of movement: axial, angular and lateral expansion joints. In modern expansion joints, the metal bellows are often produced with a so-called multi-ply design. To increase both flexibility and stability, multiple thin plies of metal are layered to form the bellow walls. There are two basic design types: The multi-ply and the multi-walled bellows structure. The multi-ply structure consists of a pressure-tight, longitudinally welded outer and inner cylinder of stainless steel. In between these cylinders is an open, spiral cylinder which forms multiple plies depending on the design. The multi-walled structure consists of several concentric, longitudinally welded cylinders. Each cylinder forms a pressure-tight and closed "wall". Normally types are: axial / angular / lateral expansion joint, The main advantages of multi-walled bellows: Resistance to high and very high pressures Large movement absorption Small dimensions Small adjusting force rates Optimal compensation in a very small space Early leak indication (in case of damage) via standard check hole Complete burst resistance Possibility of permanent leak monitoring in critical media Economical use of high-quality, corrosion-resistant materials such as Inconel, Incoloy, Hastelloy, titanium and Tantal Insulation against structure-borne noise up to 20 dB We love hearing from our customers and value your feedback.Here are ways to contact us, 24 hours a day, 7 days a week.Email: Sales@flexible-joints.com, web: www.flexible-joints.com