Stainless Steel Corrugated Hose

Stainless steel corrugated hose is a flexible industrial metal material with good heat and pressure resistance. Classification by use: mainly includes metal bellows, corrugated expansion joints, corrugated heat exchange tubes, diaphragm boxes, etc. Metal bellows are made of thin-walled stainless steel welded pipes through corrugated processing, which are flexible and have good heat and pressure resistance. It is suitable for the transportation of various fluid media such as air, steam, various industrial gases, water, oil, and medicines, and plays an important role in the reciprocating motion of the pipe system, the absorption of thermal expansion system, vibration absorption, and the center adjustment of the pipe.

Classification of stainless steel corrugated hoses

Classification by wave type

Classification by different wave types of corrugated pipes: mainly divided into two types, one is annular corrugated hose, and the other is spiral corrugated pipe.

● Spiral corrugated pipe

Spiral corrugated pipe is a tubular shell with corrugations arranged in a spiral shape. There is a spiral rise angle between two adjacent corrugations, and all corrugations can be connected by a spiral line.

● Annular bellows

Annular bellows are tubular shells with closed circular rings, and the waves are connected in series by circular rings. Annular bellows are formed by seamless pipes or welded pipes. Due to the processing method, the length of a single tube is usually shorter than that of a spiral bellows. The advantages of annular bellows are good elasticity and low rigidity.

According to the purpose

Stainless steel corrugated soft tubes are classified by purpose: mainly including metal bellows, corrugated expansion joints, corrugated heat exchange tubes, diaphragm boxes, etc.

● Metal bellows

Metal bellows are mainly used to compensate for pipeline thermal deformation, shock absorption, and absorption of pipeline settlement deformation. They are widely used in petrochemical, instrumentation, aerospace, chemical, electric power, cement, metallurgy and other industries.

Its structure is a tubular elastic sensitive element formed by foldable corrugated sheets connected along the folding and telescopic direction. Its open end is fixed, the sealed end is in a free state, and auxiliary spiral springs or reeds are used to increase elasticity. When working, it stretches along the length of the tube under the action of internal pressure, causing the movable end to produce a displacement that is related to the pressure. The movable end drives the pointer to directly indicate the size of the pressure. The bellows is often combined with a displacement sensor to form a pressure sensor with an output of electrical quantity, and is sometimes used as an isolation element.

A pressure measuring elastic element in a pressure measuring instrument. It is a cylindrical thin-walled corrugated shell with multiple transverse corrugations. The bellows is elastic and can produce displacement under the action of pressure, axial force, transverse force or bending moment.

Bellows are widely used in instruments and meters. Their main purpose is to serve as a measuring element of a pressure measuring instrument to convert pressure into displacement or force. The bellows have a thinner wall and higher sensitivity, and the measuring range is from tens of Pa to tens of MPa.

Bellows can also be used as a sealing isolation element to separate two media or prevent harmful fluids from entering the measuring part of the equipment. It can also be used as a compensation element to compensate for the temperature error of the instrument by using its volume variability. Sometimes it is also used as an elastic connection joint between two parts, etc.

According to the material

According to the material, bellows can be divided into two types: metal bellows and non-metal bellows.

According to the structure

According to the structure, it can be divided into single-layer and multi-layer. Single-layer bellows are widely used.

Multi-layer bellows have high strength, good durability, low stress, and are used in important measurements. Common bellows are generally made of stainless steel (American standard 304/316L/201), and some are also made of bronze, brass, monel and nickel alloy and other materials.

Features of stainless steel corrugated hose

Features of stainless steel corrugated hose pipe

1. Good construction performance: Stainless steel corrugated hose is a thin-walled hose with reduced overall weight, which greatly reduces the load and construction time of construction operations.

2. Corrosion resistance: The main body of the bellows is formed with 304 or 316L stainless steel, and stainless steel joints or carbon steel joints are used at both ends, which have good corrosion resistance. Ensure sealing.

3. High pressure resistance: Taking into account the actual working pressure, use environment and use conditions of the bellows, all parameters have been carefully calculated and repeatedly tested to ensure its pressure safety during work.

4. Many types: The existing bellows diameter range: DN8-DN4000, and others are customized according to customer requirements.

5. Shockproof and anti-dislocation: Stainless steel corrugated hose has good flexibility and compensation displacement characteristics.

6. Beautiful appearance: The appearance is clear and bright, and it is always bright as new.