Metal expansion joints are flexible components designed to absorb thermal expansion, vibration and movement in piping systems. Depending on the piping layout and movement requirements, different configurations may be used, including axial, hinged, gimbal, pressure balanced and externally pressurized expansion joints.

Expansion joint selection should begin with the actual operating conditions of the pipeline. Key information includes nominal diameter, design pressure, operating and design temperature, medium, axial movement, lateral movement, angular movement, installation length and connection type.

Pressure balanced expansion joints are designed for applications where piping movement needs to be absorbed while reducing the effect of pressure thrust on the piping system. Different pressure balanced configurations may be selected according to piping layout, movement direction and installation space.

Flexible metal hoses are used where flexibility, vibration isolation or movement accommodation is required. The correct hose configuration depends on diameter, pressure, temperature, medium, overall length, end connections, installation condition and material.

Material selection affects corrosion resistance, temperature capability and service life. Stainless steels such as 304 and 316L, as well as other alloys, may be selected according to the medium and operating conditions. Flanges, pipe ends and other components may use different materials based on project requirements.

A complete RFQ can significantly improve quotation speed and accuracy. Recommended information includes product type, quantity, nominal diameter, pressure, temperature, medium, installation length, axial movement, lateral movement, angular movement, material, connection type and applicable standards.