Description
Flexible Metal Hose For petroleum industry | SGPE
SGPE Flexible Metal Hose for Oil & Gas delivers safe, flexible, and reliable fluid transfer in demanding petroleum environments. It combines a stainless steel corrugated inner tube with one or more outer layers of stainless steel wire braid or steel belt mesh, so it offers strong pressure resistance, corrosion resistance, and long-term service performance in oilfield, refinery, petrochemical, LNG, and terminal piping systems.
In oil and gas operations, piping rarely stays still. Pumps vibrate, compressors create movement, pipelines expand as temperatures change, and skid-mounted systems often leave little room for rigid routing. In these conditions, a stainless steel flexible metal hose assembly helps absorb movement, reduce mechanical stress, and improve overall piping reliability.
With a service temperature range from -196°C to +420°C, SGPE corrugated metal hose can handle both cryogenic petroleum media and high-temperature process service. Its compact design, light weight, and strong flexibility also make installation easier in tight, vibration-prone, or offset layouts.
What Is Flexible Metal Hose?
Flexible metal hose is a stainless steel corrugated hose assembly designed to transfer fluids or gases while allowing movement, vibration control, and thermal expansion compensation. In petroleum systems, it commonly connects pumps, compressors, manifolds, separators, meters, burners, skid-mounted units, and auxiliary process lines where rigid pipe would create excess stress or installation difficulty.
A typical flexible metal hose assembly includes:
- A corrugated stainless steel inner tube for fluid transfer and flexibility
- single or multiple braid layers for pressure reinforcement
- connectors or flanges for secure installation in oil and gas piping systems
This structure keeps the hose flexible while allowing it to carry pressure safely under demanding service conditions.
Why Use Flexible Metal Hose in Oil & Gas Systems?
Oil and gas piping systems face more than pressure alone. They also deal with vibration, thermal expansion, alignment offset, limited installation space, and repeated equipment movement. These conditions can shorten the life of rigid connections and increase maintenance costs.
SGPE flexible metal hose helps solve these problems because it can:
- absorb vibration from rotating equipment
- compensate for thermal expansion in process lines
- reduce stress on pumps, valves, instruments, and fittings
- connect equipment with slight offset or movement
- simplify piping installation in confined spaces
- improve reliability in dynamic petroleum environments
As a result, the piping system can run more smoothly, last longer, and require less corrective maintenance.
Key Features of SGPE Flexible Metal Hose
Designed for Oil and Gas Service
This flexible metal hose is built for petroleum industry applications, including crude oil transfer, hydrocarbon gas service, natural gas piping, refinery process lines, petrochemical systems, LNG service, and auxiliary oilfield piping.
Wide Temperature Resistance
The hose performs across a broad temperature range from -196°C to +420°C. It suits cryogenic media, steam service, hot oil systems, heated transfer lines, and high-temperature petroleum processes.
Strong Corrosion Resistance
The stainless steel structure offers dependable corrosion resistance in harsh petroleum environments. It performs well in crude oil systems, refined product lines, hydrocarbon gas service, and chemical-assisted processing conditions.
Reliable Pressure Performance
The outer braid strengthens the corrugated tube and improves pressure resistance. This allows the hose to serve low-, medium-, and high-pressure applications, depending on size, reinforcement design, and end connection type.
Excellent Flexibility
The corrugated structure lets the hose bend and move more easily than rigid pipe. This helps installers route the hose assembly through tight spaces in refinery modules, offshore systems, compact skids, and oilfield layouts.
Vibration and Movement Absorption
The hose absorbs vibration from pumps, compressors, engines, and pipeline systems. It also compensates for installation misalignment, thermal movement, and small equipment displacement.
Compact and Practical Design
Its compact structure reduces complicated pipe routing and supports easier installation, faster replacement, and simpler maintenance in petroleum facilities.
Product Construction
Inner Tube
Stainless steel corrugated tube designed for fluid transfer, flexibility, and temperature resistance.
Reinforcement
Single or multiple outer layers of stainless steel wire braid or steel belt mesh to provide higher strength and better pressure support.
End Connections
Available with connectors or flanges for integration with refinery piping, oilfield equipment, tank farm systems, petrochemical units, LNG facilities, and other petroleum service layouts.
Main Applications in the Petroleum Industry
SGPE Flexible Metal Hose is suitable for petroleum systems where pressure, vibration, corrosion, heat, or movement affects piping performance.
Upstream Oil & Gas Applications
- crude oil transfer lines
- natural gas piping systems
- wellsite skid connections
- separator and manifold connections
- pump suction and discharge lines
- compressor inlet and outlet lines
- auxiliary piping on drilling and production equipment
Midstream Applications
- tank farm loading and unloading systems
- transfer lines for petroleum products
- booster pump connections
- storage and terminal piping systems
- meter skid and manifold piping
- pipeline auxiliary service lines
Downstream Applications
- refinery piping connections
- petrochemical process lines
- hydrocarbon handling systems
- fuel oil lines
- steam tracing systems
- thermal oil lines
- burner and utility piping
- instrument and auxiliary process piping
Special Petroleum Service Applications
- LNG and cryogenic service lines
- offshore platform piping systems
- modular skid-mounted oil and gas units
- confined-space piping where rigid routing is difficult
Typical Media
This stainless steel braided metal hose can serve a wide range of petroleum-related media, including:
- crude oil
- diesel
- fuel oil
- lubricating oil
- hydrocarbon gas
- natural gas
- steam
- hot oil
- process water
- chemical media used in petroleum processing
- low-temperature media
- high-temperature process fluids
Technical Specifications
General Performance
| Item | Specification |
|---|---|
| Product Name | Flexible Metal Hose |
| Hose Type | Stainless steel corrugated flexible metal tubing |
| Reinforcement | Stainless steel wire braid or steel belt mesh sleeve |
| Temperature Range | -196°C to +420°C |
| Pressure Classes | High pressure / Medium pressure / Low pressure |
| End Type | Connectors or flanges |
| Main Use | Petroleum fluid transfer, vibration absorption, movement compensation, thermal expansion compensation |
Pressure Class Overview
| Classification | Nominal ID Range | Typical Working Pressure Range | Typical Use |
|---|---|---|---|
| High Pressure | DN4–DN32 | 10–35 MPa | High-pressure oil and gas fluid or gas transfer |
| Medium Pressure | DN4–DN40 | 4–10 MPa | General petroleum process piping systems |
| Low Pressure | DN4–DN250 | 0.8–2.5 MPa | Large-size transfer lines and lower-pressure oilfield service |
Note: PN, PS, and Pb values are based on 20°C.
Typical High-Pressure Size Reference
| Nominal ID (mm) | Min. ID (mm) | Max. OD (mm) | Working Pressure (MPa) | Working Pressure (PSI) |
|---|---|---|---|---|
| 4 | 2.5 | 8.5 | 35 | 5071 |
| 6 | 4.5 | 12 | 35 | 5071 |
| 8 | 6.5 | 14 | 23 | 3332 |
| 10 | 8.5 | 16 | 23 | 3332 |
| 12 | 10 | 20 | 23 | 3332 |
| 14 | 12 | 22 | 21 | 3043 |
| 20 | 16 | 26 | 17 | 2463 |
| 25 | 18 | 28 | 15 | 2175 |
| 32 | 22 | 34 | 10 | 1449 |
Test and Bend Data
- Test Pressure: 1.5 × PN
- Static Minimum Bend Radius: ≥ 10DN
- Dynamic Minimum Bend Radius: ≥ 2Rj
Customization Options
Different oil and gas systems require different hose structures. SGPE can match the hose assembly to real operating conditions and installation requirements.
Custom options include:
- hose length
- nominal diameter
- pressure class
- single braid or multi-braid design
- connector type
- flange type
- assembly configuration for specific petroleum applications
This helps buyers choose a flexible metal hose assembly that fits both technical duty and available installation space.
Why Buyers Choose SGPE
Industrial buyers need more than a hose. They need a product that performs reliably in the field, matches actual working conditions, and fits project schedules.
SGPE supports customers with:
- flexible metal hose solutions for petroleum service
- practical sizing support based on operating conditions
- customizable hose assemblies for different project needs
- braid and connection options for different pressure requirements
- application support for oilfield, refinery, petrochemical, LNG, and terminal systems
- efficient communication for quotation and technical confirmation
For EPC contractors, distributors, plant operators, and oilfield equipment buyers, this means easier selection and a more practical procurement process.
How to Choose the Right Flexible Metal Hose
Before ordering, confirm these points:
- Medium – What petroleum fluid or gas will pass through the hose?
- Temperature – What is the minimum and maximum operating temperature?
- Pressure – What is the working pressure and surge pressure?
- Size – What nominal diameter do you need?
- Length – What installation length is required?
- Connection Type – Do you need threaded ends, welded ends, or flanges?
- Movement Condition – Will the hose absorb vibration, offset, or repeated movement?
- Installation Space – What bend radius and routing space are available?
Clear technical data helps ensure safer selection, longer service life, and better system performance.
Frequently Asked Questions
1. What is flexible metal hose used for in oil and gas systems?
Flexible metal hose transfers oil, gas, steam, and other process media in piping systems that need flexibility, pressure resistance, and vibration control. It also helps absorb movement and compensate for thermal expansion.
2. What is the difference between corrugated metal hose and braided metal hose?
The corrugated hose is the inner flexible tube that carries the medium. The braid layer surrounds the tube and strengthens it under pressure. Together, they form a complete flexible metal hose assembly.
3. Why is stainless steel flexible hose suitable for petroleum service?
It offers strong corrosion resistance, wide temperature tolerance, and dependable mechanical performance. It also handles vibration and movement better than rigid pipe in many oil and gas installations.
4. Can this hose handle high pressure?
Yes. A properly designed braided flexible metal hose can handle high pressure, especially in smaller sizes with reinforced braid layers. Final pressure capability depends on size, temperature, braid structure, and connection design.
5. Can it work in high-temperature service?
Yes. The hose operates from -196°C to +420°C, so it can serve hot oil, steam, refinery process lines, and cryogenic petroleum applications.
6. Is it suitable for crude oil and hydrocarbon gas transfer?
Yes. It is suitable for crude oil, refined petroleum products, hydrocarbon gas, and many other petroleum-related media when the hose design matches the actual working conditions.
7. Can flexible metal hose reduce vibration?
Yes. Vibration absorption is one of its main advantages. It helps protect pumps, compressors, valves, and connected piping from continuous mechanical stress.
8. What end connections are available?
SGPE can provide connectors or flanges according to the application, piping design, and installation requirements.
9. Where is this hose commonly used?
Common applications include oilfields, refineries, petrochemical plants, tank farms, offshore platforms, LNG facilities, compressor stations, and modular skid systems.
10. Does the hose require a minimum bend radius?
Yes. Every hose has a minimum bend radius. Correct bending protects the corrugated tube, maintains performance, and extends service life.
11. Can SGPE support custom hose assemblies?
Yes. SGPE can provide customized hose length, size, braid structure, pressure class, and connection type based on project needs.
12. What should I send for a fast quotation?
Please send the medium, temperature range, working pressure, hose size, hose length, end connection type, quantity, and application environment.
Request a Quote
Looking for a reliable flexible metal hose manufacturer or stainless steel corrugated hose supplier for your petroleum project?
SGPE can help you select the right hose assembly for:
- crude oil service
- natural gas systems
- refinery piping
- petrochemical units
- LNG lines
- pump connections
- compressor systems
Please send the following details:
- medium type
- working temperature
- working pressure
- hose size
- hose length
- end connection type
- quantity
- application environment
Send your inquiry today for a faster and more accurate recommendation for your oil and gas project.
E-Mail: info@sgpe.com
