Heavy Duty 6 Inch Stainless Steel Wire Braided Hose for Pipeline Linkage
DN25-DN800
A PTFE-lined metal hose expansion joint is a high-performance pipeline compensator that integrates the corrosion resistance of polytetrafluoroethylene (PTFE) and the flexibility and pressure-bearing capacity of metal hoses. It is engineered to compensate for axial, lateral, and angular displacements in industrial pipelines, while safely transporting aggressive, high-purity, or temperature-sensitive media. This product is widely used in harsh working conditions where standard metal expansion joints or rubber flexible connectors cannot meet the requirements.
Delivery
EXW,CIF,CFR,FOB,DAP
minimum order
50 pieces
Supply Ability
10pieces / Day
Country of Origin
China
Stock Time
10-15Day
Quantity:
US $1.00 - US $999.00
/ pieces
Product Description
Product Description
A PTFE-lined metal hose expansion joint is a high-performance pipeline compensator that integrates the corrosion resistance of polytetrafluoroethylene (PTFE) and the flexibility and pressure-bearing capacity of metal hoses. It is engineered to compensate for axial, lateral, and angular displacements in industrial pipelines, while safely transporting aggressive, high-purity, or temperature-sensitive media. This product is widely used in harsh working conditions where standard metal expansion joints or rubber flexible connectors cannot meet the requirements.
Core Structure & Material Configuration
- Inner PTFE LiningMade of virgin PTFE or modified fluoropolymers (PFA, FEP), the lining features a smooth, non-stick surface with universal chemical inertness. It prevents direct contact between the transported medium and the metal hose, avoiding corrosion and medium contamination. The lining is usually formed by extrusion or molding, with seamless construction to eliminate leakage risks.
- Reinforced Metal Hose CoreThe substrate is a corrugated metal hose, typically made of stainless steel (SS304, SS316L, or Hastelloy for extreme corrosion). The corrugated structure ensures excellent flexibility for displacement compensation, while the metal material provides high-pressure resistance and structural rigidity.
- External Braiding LayerA high-strength stainless steel wire braid is wrapped around the metal hose, enhancing the joint's pressure-bearing capacity, preventing hose expansion under internal pressure, and protecting the corrugated structure from external mechanical damage.
- End FittingsConnection ends are available in flange (RF, RTJ), threaded (NPT, BSP), or weld configurations, made of SS304/316L or carbon steel. The fitting-lining interface is precision-sealed to avoid medium seepage between the lining and metal layer.
Key Technical Features
- Dual Performance Advantages
- Corrosion Resistance: The PTFE lining resists almost all chemicals, including strong acids, strong alkalis, oxidants, organic solvents, and corrosive salts, suitable for chemical, pharmaceutical, and electroplating industries.
- Flexible Compensation: Compensates for axial displacement (±5% of hose length), lateral displacement (±30mm), and angular deflection (±15°), reducing pipeline system stress caused by thermal expansion, vibration, or installation misalignment.
- Wide Temperature & Pressure Adaptability
- Temperature Range: -200ºC (cryogenic media like liquid nitrogen) to +260ºC (high-temperature fluids), with modified PFA linings capable of short-term operation at 300ºC.
- Pressure Rating: PN0.6-PN25 (Class 150-Class 300), with customized high-pressure versions available for special industrial needs.
- Hygienic & High-Purity PropertiesThe smooth PTFE inner wall prevents medium adhesion, scaling, and bacterial growth, meeting strict standards such as FDA, 3A, and USP Class VI. It is ideal for food, beverage, pharmaceutical, and semiconductor ultra-pure fluid transportation.
- Durable & Low-MaintenanceThe metal braid layer protects the corrugated hose from external impacts and fatigue damage, extending the service life. The product requires no regular maintenance under rated conditions, reducing pipeline operation costs.
Typical Technical Specifications
| Parameter | Standard Range | Custom Options |
|---|---|---|
| Nominal Diameter | DN15-DN600 (1/2"-24") | DN700-DN1000 for large-diameter pipeline systems |
| Nominal Pressure | PN0.6-PN25 (Class 150-Class 300) | PN40+ high-pressure designs |
| Temperature Resistance | -200ºC to +260ºC | -269ºC (liquid helium) or +300ºC (PFA lining) |
| Connection Type | Flange, Thread (NPT/BSP), Weld, Sanitary Clamp | Customized end fittings per customer drawings |
Primary Application Scenarios
- Chemical Industry: Transport of acids, alkalis, specialty chemicals, and corrosive catalysts.
- Pharmaceutical & Biotech: Conveyance of sterile liquids, and fermentation broths.
- Food & Beverage: Transfer of fruit juices, dairy products, edible oils, and high-concentration syrups.
- Semiconductor & Electronics: Ultra-pure water (UPW) and chemical delivery systems (CDS).
- Petrochemical & Refining: Handling of corrosive by-products and solvent recovery pipelines.
- Cryogenic Engineering: Liquid nitrogen, liquid oxygen, and liquefied natural gas (LNG) transportation systems.
Detailed Photos





FAQ
a) How can I get more details about your products?You can send an email to our email address. We will provide catalogue and pictures of our products for your reference.We can also supply pipe fittings, bolt and nut, gaskets etc. We aim to be your piping system solution provider.
b) How can I get some samples?
If you need, we will offer you samples for free, but new customers are expected to pay express charge.
c) Do you provide customized parts?
Yes, you can give us drawings and we will manufacture accordingly.
d) To which country have you supplied your products?
We have supplied to Thailand, China Taiwan, Vietnam, India, South Africa, Sudan, Peru , Brazil, Trinidad and Tobago, Kuwait, Qatar, Sri Lanka, Pakistan, Romania, France, Spain, Germany, Belgium, Ukraine etc. (Figures here only include our customers in latest 5 years.).
e) I can't see the goods or touch the goods, how can I deal with the risk involved?
Our quality management system conforms to the requirement of ISO 9001:2015 verified by DNV. We are absolutely worth your trust. We can accept trial order to enhance mutual trust.