ChangYuan Metal Braided Hose

Corrugated metal hose (hose for short) is a kind of high-quality flexible pipeline in modern industrial pipelines. It has many characteristics such as good flexibility, fatigue resistance, high pressure bearing, good temperature resistance, corrosion resistance, strong sealing, etc., and its service life is much longer than other hoses (rubber hose, plastic hose).

Corrugated metal hoses are widely used in industries such as aviation, aerospace, petroleum, chemical, steel, electricity, papermaking, construction, rubber, textile printing and dyeing, pharmaceuticals, food, transportation, etc. With the development of modern industry, the demand for high-quality and high-performance corrugated metal hoses will increase.

Application of Rubber Expansion Joint in Pipeline

The installation of water pumps, air conditioning equipment, and metal hoses at the connection between the inlet and outlet of chemical equipment and pipelines can block vibration sources and transmit vibration and noise to the pipeline system. In addition, the pump greatly reduces the high-frequency vibration at the connection between the water pump, air conditioning equipment, and pipelines. In addition, it reduces pipeline noise to deal with the vibration and noise hazards caused by the operation of mechanical equipment to the environment

Metal flexible joints can absorb pipeline deformation, effectively absorb angle and lateral displacement, and prevent mechanical equipment pipeline vibration. Mechanical equipment and pipelines are damaged by axial thrust due to Thermal expansion of pipelines.

Design of Rubber Expansion Joint

Changyuan Company produces rubber expansion joints according to the standards of the Fluid Sealing Association, using advanced ingredients and stamping equipment. Ensure that the rubber expansion joints produced have good ductility and scalability.

The professionals of Changyuan Company use computer software such as AutoCAD and finite element calculation to design the rubber expansion joint model required by the customer. Before production, the design drawings are submitted to the customer for confirmation.

CAD Design

Finite Element Analysis

Manufacturing process of metal braided hose

During the production of existing metal corrugated hoses, the joint needs to be fixed against the end face of the corrugated pipe, and then butt welded using a welding gun. When welding metal corrugated hoses with this structure, due to the thin wall thickness of the corrugated pipe, high-temperature welding guns are prone to damage and inconvenience to the corrugated pipe, and the welding ring between the corrugated pipe and the joint is located on the outer side of the corrugated pipe and the joint

After cutting off the corrugated pipe, cover it with a net cover and cut it off together. Cover both ends with protective sleeves to prevent the mesh from spreading. Weld the corrugated pipe and mesh sleeve sheath together first. Then perform secondary welding on the required nuts on the casing.

Braided Hose Forming

Body Welding

Advantages of metal braided hose

Corrugated metal hose is a type of hose made of stainless steel or other metal materials, characterized by high strength, corrosion resistance, high temperature resistance, pressure resistance, wear resistance, and other advantages. The structure of corrugated metal hoses is composed of a series of corrugated pipes, which can withstand high pressure and temperature, as well as bending and compression

Good Flexibility

In the pipeline system, due to the relative position movement of the two interfaces, the lateral elastic displacement characteristics of the metal hose are used to compensate for the system.

Brilliant Performance

Metal hoses can be used for a long time in the temperature range of -193 to 350 degrees Celsius without aging or deterioration, and without cracks or peeling caused by aging.

Light Weight

Metal hoses are composed of different types of metal materials, such as stainless steel corrugated pipes and flanges or copper corrugated pipes or flanges, making them lightweight and lightweight.

Corrosion Resistance

Corrugated metal hoses can be used to transport various chemicals, oil, natural gas and other media, and have good corrosion resistance.

Easy Installation

When installing the hose, it should be in the middle position, which is the so-called installation length. At this position, the hose can move in two directions when subjected to axial load.

Absorbed Stress

High pressure resistance of metal hoses: Due to the use of high-quality stainless steel in the pipe body, a hose with an inner diameter of 10mm can withstand a pressure of 20Mpa; A hose with an inner diameter of 300mm can withstand a pressure of 1Mpa.

Rubber material category

General name Chemical composition Material advantages Operating temperature range application
Natural rubber polyisoprene High elasticity, high elongation strength, excellent tear resistance and electrical insulation -60°C~80°C Seawater, sewage, resistant to weak acids and alkalis
Sbr Copolymer of butadiene and styrene Excellent wear resistance, aging resistance, and heat resistance -50°C~100°C Wear and tear materials, such as sludge, suspended stones, calcium, etc
Neoprene Chloroprene Excellent antioxidant, ozone resistant, non flammable, self extinguishing after fire, oil resistant, solvent resistant, acid and alkali resistant, aging resistant, and gas resistance -45°C~100°C Water, warm water, seawater, air, and weak acids. Suitable for some Clique of acid, compressed air and light oil related media
BUTYL Isobutene and isoprene Good airtightness, ozone resistance, aging resistance, and high heat resistance -40°C~120°C Inner tube, water tube, airbag, wire and cable insulation layer, chemical equipment lining and shockproof products, heat-resistant conveyor belt, heat-resistant and aging resistant tape products
Nitrile rubber butadiene and acrylonitrile Good heat resistance, air tightness, wear resistance, and water resistance, with strong adhesion -30°C~100°C Manufacturing various oil resistant products, such as rubber hoses and sealing products
EPDM rubber Ethylene and Propylene Excellent ozone resistance, UV resistance, weather resistance, and aging resistance -50°C~150°C Chemical equipment lining, wire and cable wrapping, steam hose, heat-resistant conveyor belt, automotive rubber products, and other industrial products
silicon rubber The main chain contains silicon and oxygen atoms High temperature resistance (up to 300 ° C) and low temperature resistance (down to -100 ° C) -60°C~200°C Produce high and low temperature resistant products (rubber hoses, seals, etc.), insulation layers for high temperature resistant wires and cables, and are also used in the food and pharmaceutical industries due to their odorless nature
VITON Fluorinated monomers High temperature resistance up to 300 ℃, acid and alkali resistance, oil resistance -20°C~200°C Manufacturing aircraft, sealing materials that are resistant to vacuum, high temperature, and chemical corrosion, rubber hoses or other parts on rockets, and the automotive industry

During the production of rubber expansion joints

frequently asked questions

Pure rubber,Neoprene,butyl,nitrile,Hypalon ®,EPDM rubber,Fkm and etc.

Outer galvanized flange,Stainless steel flange,Forged flange,Flat welding flange,Butt welding flange and etc.

Single Narrow Arch Type,Multiple Narrow Arch Type,PTFE Lined,Non-metallic Reinforced and etc…

Ingredients, extruded rubber cloth, wrapped expansion joint model, stamping, trimming, and flange installation

Each rubber expansion joint undergoes vacuum pressure testing, horizontal torque testing, longitudinal torque testing, and extreme temperature testing

Based on the medium flowing inside the rubber expansion joint, the shape of the pipeline interface, and the working environment temperature, what type of rubber expansion joint should be designed?


Mason Lee

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