Flexible Rubber Bellow

Product Details

Types of rubber bellows

Bellows mainly include metal bellows, bellows expansion joints, bellows heat exchange tubes, diaphragm bellows and metal hoses. Metal bellows are mainly used for compensating pipeline thermal deformation, shock absorption, absorbing pipeline settlement deformation, etc., and are widely used in petrochemical, instrumentation, aerospace, chemical, electric power, cement, metallurgy and other industries. Corrugated pipes of other materials such as plastics play an irreplaceable role in the fields of media transportation, power threading, machine tools, and home appliances.

Bellows is a pressure measuring elastic element in pressure measuring instruments. It is a cylindrical thin-walled corrugated shell with multiple transverse corrugations. The corrugated pipe is elastic and can be displaced under the action of pressure, axial force, transverse force or bending moment. Bellows are widely used in instruments and meters, and their main purpose is as a measuring element of pressure measuring instruments to convert pressure into displacement or force. The bellows has a thinner wall and higher sensitivity, and the measurement range is from tens of Pa to tens of MPa. In addition, bellows can also be used as sealing isolation elements to separate two media or prevent harmful fluids from entering the measuring part of the device. It can also be used as a compensation element, using its volume variability to compensate for instrument temperature errors. Sometimes it is also used as an elastic coupling joint of two parts, etc. Corrugated pipes can be divided into metal corrugated pipes and non-metallic corrugated pipes according to their constituent materials; they can be divided into single-layer and multi-layer according to their structure. Single-layer corrugated pipes are widely used. Multilayer bellows have high strength, good durability and low stress, and are used in important measurements. The material of bellows is generally bronze, brass, stainless steel, Monel and Inconel.

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