Flexible Metal Hoses
Grooved-End Flexible Metal Hose
A braided corrugated metal hose assembly with grooved-end connections for flexible piping and equipment connections. Designed for HVAC, building services, pump and equipment connections, fire-protection piping and industrial systems where vibration, installation flexibility and controlled piping movement need to be considered.
Also searched as a grooved metal hose, grooved-end flexible metal hose, grooved flexible connector, grooved braided metal hose or flexible metal hose with grooved ends.
- Connection
- Grooved-End
- Size Range
- DN32–DN350
- Design Pressure
- 0.25–2.5 MPa
- Design Temperature
- -20°C to +400°C
- Typical Use
- Flexible Equipment & Piping Connection
- Structure
- Corrugated Metal Hose + External Braid
- Typical Systems
- HVAC / Pumps / Building Services / Industrial Piping
- Customization
- Length / Braid Configuration / Material Options by Confirmed Requirements
CustomizationDifferent lengths, braid configurations and material options are available according to confirmed project requirements.
Project Configuration
Mingchao can customize the product configuration based on the technical information, operating conditions and dimensional data you provide. Final configuration can be reviewed and manufactured to the approved project drawing.
Grooved Flexible Metal Hose Overview
The Mingchao Grooved-End Flexible Metal Hose is designed as a flexible connection between grooved piping and mechanical equipment.
Its corrugated metal hose provides flexibility, while the external braid reinforces the hose assembly and contributes to pressure resistance and durability. Grooved-end connections allow the assembly to be integrated into compatible grooved piping systems without conventional flanged end connections.
Typical applications include HVAC piping, building services, pump and mechanical equipment connections, fire-protection piping and industrial piping systems.
For project selection, the hose configuration should be confirmed against the actual pressure, temperature, medium, required assembly length, movement condition and mating grooved connection.
Technical Specifications & Flexible Connection
The confirmed product data below describes the C03 grooved flexible metal hose without applying movement or dimensional values from other bellows or metal-hose products.
| Specification | Confirmed Product Data |
|---|---|
| Product Type | Grooved Metal Hose |
| Connection Type | Grooved-End Connection |
| Size Range | DN32–DN350 |
| Design Pressure | 0.25–2.5 MPa |
| Design Temperature | -20°C to +400°C |
| Construction | Corrugated Metal Hose with External Braid and Grooved Ends |
| Typical Applications | HVAC, Building Services, Pump & Equipment Connections, Fire-Protection Piping, Industrial Piping |
| Customization | Different lengths, braid configurations and material options according to confirmed project requirements |
Detailed movement limits, bend radius, assembly length and pressure capability by individual size depend on the confirmed hose configuration and should be verified before final selection.
Grooved-End Connection for Piping Systems
Grooved ends provide a practical connection option for piping systems where grooved couplings are specified.
Compared with a conventional flanged flexible hose assembly, the grooved-end configuration can simplify connection and removal where the piping system has been designed for compatible grooved joints.
For quotation and technical confirmation, provide the mating groove or coupling requirement, project specification or relevant drawing. Groove geometry and coupling compatibility should be confirmed for the specific project rather than assumed from nominal pipe size alone.
Corrugated Hose & External Braid Construction
The product combines three principal elements:
• a corrugated metal hose that provides the flexible section;
• an external metal braid that reinforces the hose assembly and contributes to pressure resistance and durability;
• grooved end connections for integration with the specified piping connection.
This construction is fundamentally different from a grooved bellows expansion joint with limit rods. The Grooved-End Flexible Metal Hose is primarily selected as a flexible equipment and piping connector. Detailed movement capability must be matched to the installation geometry and confirmed hose design.
Applications for HVAC, Pumps & Industrial Piping
HVAC Utility Piping
Chilled-water, hot-water and utility piping in HVAC systems where technically applicable.
Pump & Equipment Connections
Flexible connections near pumps and mechanical equipment.
Building Services
Flexible connection in building-services piping systems.
Fire-Protection Piping
Flexible grooved connection where project specifications and approvals are separately confirmed.
Industrial Piping
Industrial piping exposed to vibration or installation movement.
Grooved Piping Connections
Grooved piping systems requiring a flexible connection between rigid pipe sections or equipment.
Application suitability depends on the operating medium, pressure, temperature, movement requirement and connection specification.
How to Select a Grooved Flexible Metal Hose
Correct selection requires the operating conditions, connection geometry and the way the hose will move in service. Provide the following information for configuration review.
- Nominal pipe size or pipe outside diameter
- Design or working pressure
- Operating temperature
- Process medium
- Required overall assembly length
- Vibration or movement condition
- Installation orientation and available space
- Required grooved-end configuration
- Mating groove / coupling specification or drawing
- Braid configuration, if specified by the project
- Quantity
- Application
- Destination country
Where movement requirements are critical, provide the expected movement direction and magnitude so that the hose configuration can be reviewed before manufacture.
Grooved Flexible Metal Hose vs. Grooved Bellows Expansion Joint
| Selection Point | Grooved Flexible Metal Hose | Grooved Bellows Expansion Joint |
|---|---|---|
| Main Product Role | Flexible piping and equipment connection | Engineered bellows compensation |
| Flexible Element | Corrugated metal hose | Corrugated bellows |
| External Braid | Yes | Not part of the current Mingchao grooved bellows configuration |
| Limit Rods | No confirmed limit-rod configuration | Present on the current Mingchao grooved bellows product |
| Typical Selection Focus | Vibration, flexibility, equipment connection and installation geometry | Thermal movement, axial compensation and piping-system design |
| End Connection | Grooved-End | Grooved-End |
| Engineering Selection | Hose length, movement, routing, pressure, temperature and connection | Bellows movement, pressure, temperature, anchors, guides and piping layout |
These two products should not be selected interchangeably. The correct solution depends on the required movement, piping layout, equipment connection and system design.
Installation & Routing Considerations
Use the confirmed hose configuration and approved piping layout for final installation.
Service Conditions
Confirm pressure, temperature and medium before installation.
Grooved Connection
Confirm the mating grooved connection before manufacture or installation.
Avoid Torsion
Do not twist the flexible hose during installation.
Avoid Forced Misalignment
Do not force the assembly into uncontrolled misalignment.
Minimum Radius
Avoid bending the hose below the minimum radius specified for the confirmed assembly.
Independent Support
Support connected piping and equipment independently.
Unsupported Loads
Do not use the hose assembly to carry unsupported pipe or equipment weight.
Protect Assembly
Protect the braid and corrugated hose from mechanical damage.
Movement & Routing
Confirm required movement and routing before fixing adjacent piping.
Coupling Components
Check that the selected grooved coupling, gasket and other connection components are suitable for the actual operating conditions.
Real Grooved Metal Hose Product & Technical Photos
Technical Documents / Reference Information
- Available technical information may include product drawings, confirmed product data and project-specific selection information.
- For detailed dimensions, movement requirements, material requirements or connection compatibility, send the project specification or drawing to Mingchao for confirmation.
- For a faster quotation, provide DN or pipe OD, pressure, temperature, medium, required length, movement or vibration condition, mating groove or coupling requirement, quantity and application.