PEX-B Flexible Inner Hose for Braided Hose Production

The EXTRUTEX PEX-B Flexible Hose is particularly suitable as the inner tube of a braided flexible hose. In this construction, the PE-Xb tube is the layer that directly contacts the transported fluid, while an external braided reinforcement can be applied when additional pressure resistance and mechanical stability are required.

This construction allows hose manufacturers to design flexible assemblies according to the requirements of different markets and applications. Depending on the final hose design, the PEX-B inner tube can be combined with textile, fiber or other suitable reinforcement structures and an optional protective outer layer.

The advantage of using PEX-B as the inner tube is that the fluid-contact layer can provide the flexibility, temperature resistance and chemical resistance associated with cross-linked polyethylene while the external reinforcement is responsible for increasing the pressure-handling capability of the complete hose assembly.

What Is PEX-B?

PEX-B is cross-linked polyethylene produced using the silane cross-linking process. The cross-linking process modifies the polyethylene molecular structure and improves the material's resistance to temperature, pressure and long-term mechanical loading compared with conventional non-cross-linked polyethylene.

PE-Xb is widely used in flexible pipe applications because it retains the inherent flexibility of polyethylene while providing improved performance at elevated temperatures. This makes it suitable for water systems, heating applications, equipment connections and selected industrial fluid-transfer applications.

For hose manufacturers, PEX-B provides an attractive material for the inner tube because it can combine a smooth fluid-contact surface with flexibility and resistance to demanding operating conditions.

The EXTRUTEX PEX-B hose is therefore positioned not only as a standalone flexible pipe but also as a dedicated PEX-B inner tube for braided flexible hose manufacturing.

PE-Xb Inner Tube Construction

In a braided hose assembly, the EXTRUTEX PEX-B tube forms the innermost fluid-contact layer. The tube can subsequently be surrounded by an external reinforcement structure selected according to the required pressure, flexibility, temperature and application.

This modular approach allows hose manufacturers to use the EXTRUTEX PEX-B tube as the foundation for different flexible hose constructions. The final pressure rating and performance of the completed braided hose depend on the inner tube, reinforcement, outer layer, fittings, dimensions and manufacturing process.

Transparent PEX-B Flexible Tube

The natural transparent or translucent appearance of the EXTRUTEX PEX-B tube provides a clean technical appearance and can allow visual observation of the tube and transported medium where the level of transparency permits.

For braided hose manufacturers, the transparent PEX-B inner tube can be particularly useful because the fluid-contact layer remains clean and visually identifiable before the external reinforcement and cover are applied.

The smooth inner surface is also advantageous for fluid transfer because it provides a continuous polymer surface without the internal texture associated with reinforcement layers.

Temperature Resistance

According to the supplied EXTRUTEX product data, the PE-Xb flexible hose can operate across a broad temperature range of approximately -70°C to 110°C.

PEX-B is particularly valuable in applications where a flexible hose must tolerate elevated temperatures while maintaining useful mechanical performance. For hot-water applications, however, the allowable pressure decreases as operating temperature increases.

Pressure Performance of PEX-B Inner Hose

The supplied EXTRUTEX test information identifies a sustained pressure performance of 3.0 MPa at 26°C. At elevated temperature, the supplied data indicates approximately 1.0 MPa at 90–95°C.

These figures refer to the supplied PEX-B tube test information and should not automatically be interpreted as the pressure rating of a completed braided hose. When the tube is incorporated into a braided hose, the final assembly pressure rating depends on the complete construction and the selected reinforcement.

This distinction is important for OEM hose manufacturers. EXTRUTEX can supply the PEX-B inner tube as a component, while the complete braided hose can be engineered and tested according to the intended application.

Chemical Resistance

PE-Xb provides resistance to a broad range of fluids and chemical environments. According to the supplied EXTRUTEX product information, the flexible PEX-B tube can be used with water, selected acidic and alkaline media and demonstrates excellent resistance to reducing and oxidizing agents.

The supplied product data also identifies resistance to selected organic substances including toluene, xylene and gasoline.

Chemical compatibility should always be confirmed for the exact concentration, temperature, pressure and exposure time of the intended medium. EXTRUTEX can evaluate application-specific requirements for OEM customers.

Low-Odor and Clean Material Concept

The EXTRUTEX PEX-B inner tube is designed as a clean polymer fluid-contact layer with a low-odor, no-stink product concept. The supplied product information identifies the material as free from lead and mercury.

This makes the tube attractive for water-related applications and for manufacturers producing flexible hose assemblies where cleanliness and material selection are important.

For drinking-water applications, the final hose assembly must meet the certification and regulatory requirements of the destination country. Certification of the polymer tube alone does not automatically certify the complete finished hose assembly.

Physical and Property Index of PE-Xb Pipe

Additional Physical Property Data

The supplied source data contains two physical-property test sets with different Shore A and gel-content values. These may represent different test batches, formulations or testing conditions. EXTRUTEX should confirm the final specification for the selected production grade before publication of a controlled technical datasheet.

Available PEX-B Inner Tube Sizes

The following dimensions are based on the supplied EXTRUTEX product data. Dimensions are shown as outside diameter × inside diameter.

Applications as a Braided Hose Inner Tube

Advantages for Hose Manufacturers

1. Dedicated Fluid-Contact Inner Layer

The PEX-B tube provides a dedicated polymer inner layer for the transported medium. External reinforcement can then be selected independently according to the pressure and mechanical requirements of the finished hose.

2. Flexible Construction

The tube is flexible and can be routed through compact installations. This makes it suitable for braided hose assemblies where flexibility is an important design requirement.

3. High Temperature Capability

The supplied specification provides a temperature range from approximately -70°C to 110°C, making the material suitable for consideration in both cold and elevated-temperature applications.

4. Transparent Appearance

The natural transparent or translucent appearance provides a clean technical appearance and can assist visual inspection where transparency is sufficient.

5. Chemical Resistance

PEX-B provides resistance to water, selected acids, alkalis and other chemicals identified in the supplied product data.

6. Suitable for OEM Production

The PEX-B tube can be supplied as a component for hose manufacturers, OEM equipment producers, distributors and flexible-pipe assembly companies.

7. Competitive Manufacturing

Production in China allows EXTRUTEX to offer competitive manufacturing economics while research and laboratory development is carried out in Austria.

PEX-B Inner Tube vs Conventional Rubber Inner Hose

Quality and Manufacturing

EXTRUTEX PEX-B Flexible Hose is produced in China with research and laboratory development in Austria. EXTRUTEX combines polymer product development and laboratory evaluation with scalable Chinese production capabilities.

The product can be supplied for international OEM and industrial customers requiring stable dimensions, flexible performance and repeatable production of PEX-B inner tubes.

Production specifications can be discussed according to the required diameter, wall thickness, weight, pressure, temperature and final braided-hose construction.

Standards and Certification References

The supplied product information references DVGW (KTW-A), ISO 9001:2000 and DIN standards. Applicable certification should always be verified for the exact product grade, dimensions, production batch and intended final application.

OEM PEX-B Inner Hose Supply

EXTRUTEX supplies PEX-B flexible inner tubes for manufacturers that need to build their own braided or reinforced flexible hose products. The tube can serve as the fluid-contact core of the finished assembly, allowing the hose manufacturer to select the external reinforcement and cover according to the target application.

For an OEM project, customers can provide the required inner diameter, outer diameter, wall thickness, working pressure, working temperature, transported medium, required flexibility, hose length and final fitting configuration.

EXTRUTEX can then evaluate the appropriate PEX-B tube specification and production configuration for the application.

EXTRUTEX PEX-B Flexible Hose – Built for the Next Generation of Braided Hose

The EXTRUTEX PEX-B Flexible Hose provides a high-performance PE-Xb inner tube for flexible water, industrial and OEM hose applications. Its flexibility, transparent appearance, temperature resistance, pressure performance and chemical resistance make it a strong material platform for braided hose manufacturers looking for an alternative inner tube technology.

As a standalone flexible pipe or as the inner layer of a reinforced braided hose, PEX-B gives manufacturers flexibility in designing the final hose construction. The external reinforcement can be selected according to the required pressure and mechanical performance, while the PEX-B tube provides the fluid-contact layer.

Manufactured in China with EXTRUTEX research and laboratory development in Austria, the product is available for international OEM, industrial and hose-manufacturing customers.

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