Membrane Tubes And Components Manufacturers

Membrane Tubes And Components Manufacturers

As a Membrane Tubes And Components Manufacturers, we match product configuration to the application, operating limits, interfaces and acceptance criteria defined for each project.

Zheyi Pipeline (Wuhan) Co., Ltd., part of ZHEYI Group, is a China-based manufacturer and supplier of membrane tubes and components for ultrafiltration (UF) and membrane bioreactor (MBR) systems. Since 2007, we have engineered non-metallic pressure piping and filtration housings for demanding water treatment and industrial processes. Our membrane tube range is designed to match original equipment specifications, offering a reliable aftermarket and OEM solution for global membrane manufacturers and plant operators.

Our product line includes membrane tubes and transparent tubes, both available in standard and custom dimensions. These components serve as pressure housings for membrane elements in applications ranging from drinking water purification to industrial wastewater treatment. We support projects with engineering data, material selection, and quality assurance backed by ISO 9001, ISO 14001, and ISO 45001 certifications.

Our Product Range and Application Fit

We manufacture two primary types of membrane tubes, each suited to specific operational needs:

• Membrane Tubes: Opaque, pressure-rated housings for UF and MBR elements. Available in nominal diameters from 90 mm to 315 mm (3" to 12") with pressure ratings PN0.6, PN0.8, and PN1.0 MPa. Ideal for standard filtration modules where light exclusion is not required.
• Transparent Tubes: Clear housings that allow visual inspection of membrane fouling and flow conditions. Offered in metric (dn20 to dn160) and inch (1/2" to 6") sizes. Used in pilot plants, research systems, and processes where monitoring is critical.

Both types are manufactured from UPVC or CPVC, selected for chemical resistance and structural integrity. We customize length, wall thickness, and end connections to fit your membrane element dimensions and system layout.

Engineering and Customization

We understand that membrane systems are rarely off-the-shelf. Our engineering team works from your element specifications, operating pressure, and flow requirements to produce tubes that integrate seamlessly. We offer:

• Custom outer diameters and wall thicknesses for non-standard membrane shells.
• Length customization to match element sizes, reducing dead space and simplifying installation.
• Color options (white, gray, or custom) for opaque tubes; transparent tubes are clear for visibility.
• Surface treatment options to meet specific friction or chemical compatibility needs.

Our manufacturing process uses advanced extrusion and injection molding equipment, with raw materials sourced from reputable suppliers. We maintain strict tolerances to ensure pressure integrity and a leak-free fit with standard membrane end caps and connectors.

Critical Specifications and Performance

Selecting the correct tube involves matching pressure rating, diameter, and material to your system's hydraulic and chemical conditions. The table below summarizes our standard membrane tube specifications:

For transparent tubes, we follow both metric and inch standards, with wall thicknesses from 2.2 mm to 5.2 mm depending on diameter. All tubes undergo hydrostatic pressure testing to verify burst strength and leak resistance before shipment.

Quality Assurance and Testing

Quality is built into every stage of production. Our factory in Wuhan operates under ISO 9001 quality management, ISO 14001 environmental management, and ISO 45001 occupational health and safety standards. We also hold a Production License for Special Equipment and a Zhejiang Province water-related products sanitary license, confirming our materials are safe for potable water contact.

Each batch of membrane tubes is tested for:

• Dimensional accuracy (outer diameter, wall thickness, length).
• Hydrostatic pressure resistance at 1.5 times the rated pressure.
• Visual and surface quality inspection to ensure no cracks, bubbles, or contamination.
• Material density and Vicat softening temperature to confirm thermal stability.

We provide test certificates and material documentation with each shipment, enabling your quality team to verify compliance with project specifications.

Integration and Installation Support

Membrane tubes are typically installed inside pressure vessels or connected to headers using flanges, clamps, or adhesive bonding. We supply tubes with plain ends or prepared for your specific connection method. Our technical team can advise on:

• Compatibility with existing membrane elements and end caps.
• Recommended torque for clamping and sealing to prevent leaks.
• Orientation and support spacing for horizontal or vertical installations.
• Thermal expansion considerations when operating at elevated temperatures.

For retrofits, we need your current tube dimensions and pressure rating to ensure a drop-in replacement. For new systems, we work from your process flow diagram and membrane manufacturer's data sheet.

Maintenance and Serviceability

Proper maintenance extends the life of membrane tubes and prevents unplanned downtime. We recommend periodic inspection for surface wear, chemical attack, or fouling buildup. Transparent tubes allow visual checks without disassembly. Our tubes are designed for easy cleaning with standard CIP (clean-in-place) procedures, using compatible chemicals such as sodium hypochlorite or citric acid at recommended concentrations.

We stock spare tubes for common sizes and can expedite production for urgent replacements. Our after-sales team provides installation guidance and troubleshooting support via phone or email, and we can arrange on-site assistance for large projects through our network of service centers.

Documentation and Training

Every order includes a comprehensive documentation package:

• Material test certificates and pressure test reports.
• Dimensional drawings and installation instructions.
• Handling and storage guidelines to prevent damage.
• Declaration of conformity with relevant standards.

For complex projects, we offer virtual training sessions for your installation and maintenance teams, covering proper handling, jointing techniques, and safety precautions. This ensures your staff can install and maintain our components with confidence.

Information We Use to Configure Your Solution

To prepare an accurate quotation and engineering proposal, please provide the following details:

• Membrane element model and manufacturer (or exact outer diameter and length).
• Required pressure rating (PN0.6, PN0.8, PN1.0, or custom).
• Operating temperature and chemical environment (e.g., chlorine, acids, solvents).
• Desired material (UPVC or CPVC) and color (opaque or transparent).
• Quantity and delivery destination.
• Any special end connections or surface treatments.

With this information, we can confirm compatibility, provide samples if needed, and schedule production to meet your project timeline.

FAQs

Can you match the exact dimensions of my existing membrane tubes?

Yes. We regularly produce replacement tubes that match original equipment specifications. Send us your current tube's outer diameter, wall thickness, length, and end configuration, and we will manufacture to those dimensions.

What is the difference between membrane tubes and transparent tubes?

Membrane tubes are opaque and provide full pressure containment, suitable for standard UF and MBR modules. Transparent tubes are clear, allowing visual monitoring of membrane fouling and flow, which is useful for pilot testing and process optimization.

Do you provide custom lengths for membrane tubes?

Absolutely. We can cut tubes to any length you specify, within our manufacturing capabilities. Custom lengths help reduce waste and simplify installation in your existing system.

What certifications do your membrane tubes have?

Our manufacturing facility is ISO 9001, ISO 14001, and ISO 45001 certified. We also hold a special equipment production license and a sanitary license for water-related products, ensuring our tubes are safe for potable water applications.

How do you ensure the pressure rating of your tubes?

Each tube is hydrostatically tested at 1.5 times its rated pressure. We also conduct material density and Vicat softening tests to verify that the polymer meets required strength and thermal properties.