PU Tubes Supplier & Manufacturer in India
Ajay Engineering Solutions offers PU Tubes (Polyurethane Tubes) for pneumatic automation, compressed-air systems, industrial machinery and pneumatic equipment.
PU pneumatic tubes are flexible tubing products designed to transport compressed air between pneumatic components such as air preparation units, solenoid valves, pneumatic valves, cylinders, actuators, grippers and other automation equipment.
Polyurethane tubing is widely used in pneumatic systems because it combines flexibility with useful resistance to bending and abrasion. It is available in various outside and inside diameters and can be supplied in different colors depending on application and product range. (Corvin Polytech)
Ajay Engineering Solutions supports customers with PU tube supply, application selection, replacement, pneumatic-system maintenance, servicing and related industrial support.
Types of PU Tubes
Standard PU Pneumatic Tubes
Standard PU tubes are designed for general pneumatic applications.
They can be used for:
Pneumatic cylinders
Solenoid valves
FRL units
Automation machinery
Air lines
Industrial equipment
Flexible PU Tubes
Flexible polyurethane tubes are useful when pneumatic tubing needs to follow bends or move within compact machinery.
Typical applications include:
Robotics
Pick-and-place machines
Compact automation
Moving pneumatic assemblies
Machine tools
Flexible PU tubing is specifically used where easy routing and bending are important. (Corvin Polytech)
Colored PU Tubes
PU pneumatic tubes can be supplied in different colors.
Color coding can help identify individual pneumatic circuits within complicated machinery.
For example, different colors can be used to distinguish:
Supply lines
Actuator lines
Control lines
Different machine circuits
Available colors depend on the selected product range. Industrial pneumatic tube suppliers commonly offer multiple colors including blue, black, red, yellow, green and transparent. (Corvin Polytech)
PU Coiled Tubes
PU coiled tubes are designed for applications where a retractable or self-organizing air connection is useful.
They can be suitable for:
Pneumatic tools
Workstations
Machine connections
Air guns
Flexible operator connections
Coiled polyurethane tubing is designed to save space and retract after extension. (Vijay Air Control)
Anti-Spatter PU Tubes
Specialized PU tubing can be selected for applications such as welding environments where protection against hot particles and spatter is important.
These tubes may be used around:
Welding equipment
Automotive production
Fabrication machinery
Robotic welding systems
Selection should be based on the specific environmental and temperature requirements.
PU Tube Sizes
PU tubes are available in different combinations of outside diameter (OD) and inside diameter (ID).
Common pneumatic tubing dimensions in the market include configurations such as:
4 × 2.5 mm
6 × 4 mm
8 × 5 mm
10 × 6.5 mm
12 × 8 mm
14 × 10 mm
16 × 12 mm
Actual availability varies by manufacturer, product series and application. (Corvin Polytech)
Important: Do not publish a fixed size chart on the Ajay Engineering Solutions website unless those sizes are actually available from your product range.
PU Tubes for Pneumatic Automation
Industrial automation relies heavily on compressed-air systems.
A typical automated machine may contain:
PLC → Solenoid Valve → PU Tube → Pneumatic Cylinder → Machine Mechanism
PU tubing connects the pneumatic components and allows compressed air to move between them.
Applications include:
Pick-and-place systems
Automated assembly
Clamping
Pushing
Pulling
Sorting
Material handling
Positioning
Machine automation
Flexible polyurethane tubing is also used in dynamic equipment and robotics where tubing needs to accommodate movement. (Corvin Polytech)
PU Tubes for Pneumatic Cylinders
Pneumatic cylinders require air connections for extension and retraction.
PU tubes can connect:
Solenoid Valve → Pneumatic Cylinder
They are commonly used with:
Standard pneumatic cylinders
Compact cylinders
Guided cylinders
Mini cylinders
Rotary actuators
Pneumatic grippers
The tube should be compatible with the cylinder fittings and the required operating conditions.
PU Tubes for Solenoid Valves
Pneumatic solenoid valves require tubing to connect valve ports to pneumatic actuators.
PU tubing can be used with suitable:
Push-in fittings
One-touch fittings
Straight fittings
Elbow fittings
Tee fittings
Flow-control fittings
This creates a complete pneumatic circuit:
FRL → Solenoid Valve → PU Tube → Cylinder
For your website, this page should internally link to your existing Pneumatic Solenoid Valves page.
PU Tubes for Air Preparation Units
Air preparation units condition compressed air before it enters the pneumatic circuit.
After the FRL unit, PU tubing can carry the prepared air toward:
Pneumatic valves
Cylinders
Actuators
Grippers
Pneumatic tools
The tube size should be selected according to the airflow requirements of the complete system.
How to Select the Right PU Tube
Selecting pneumatic tubing requires consideration of the complete application.
1. Check Tube OD and ID
Tube dimensions are usually specified using:
OD × ID
For example:
8 × 5 mm
means:
Outside diameter = 8 mm
Inside diameter = 5 mm
Always confirm the required tube size against the fitting and equipment specification.
2. Check Operating Pressure
The tube must be suitable for the required operating pressure.
Pressure capability can vary depending on:
Tube material
Tube size
Wall thickness
Temperature
Product design
Never assume that all PU tubes have the same pressure rating.
3. Check Operating Temperature
Temperature can affect tubing performance.
The selected PU tube should be appropriate for the actual environmental and operating temperature.
4. Check Flexibility
If the tubing needs to bend frequently or move with a machine assembly, flexibility becomes particularly important.
5. Check Fitting Compatibility
The tube must be compatible with the selected pneumatic fittings.
For push-in fittings, the tubing's outside diameter is particularly important.
Incorrect tube sizing can result in:
Leakage
Tube release
Poor gripping
Installation problems
6. Consider Chemical Exposure
Where tubing may contact oils, chemicals or cleaning agents, material compatibility should be checked before selection.
7. Consider Abrasion
Applications involving repeated movement or contact with machinery may require tubing with suitable abrasion resistance.
8. Consider Color
Color-coded tubing can make pneumatic circuits easier to identify and maintain.
PU Tube Installation
Correct installation is important for preventing air leakage and premature tube failure.
Recommended procedure:
Shut off compressed-air supply.
Release residual pressure.
Select the correct tube.
Cut the tube cleanly and squarely.
Remove damaged or deformed ends.
Insert the tube fully into the fitting.
Confirm secure retention.
Route tubing without excessive bending.
Avoid sharp edges.
Pressurize the circuit gradually.
Inspect connections for leakage.
Test the pneumatic equipment.
Manufacturers of push-in fittings commonly recommend a clean, perpendicular tube cut and complete insertion into the fitting to ensure proper connection. (dlpneumatics.com)
Common PU Tube Problems
Air Leakage
Possible causes include:
Incorrect tube insertion
Damaged tubing
Incorrect tube size
Damaged fitting
Tube cut incorrectly
Excessive bending
Tube Disconnection
Possible causes include:
Incorrect tube OD
Incomplete insertion
Damaged fitting
Excessive pulling force
Incorrect tube/fitting combination
Tube Kinking
Kinking can restrict airflow.
Possible causes include:
Excessive bending
Incorrect routing
Tight installation space
Insufficient bend radius
Tube Cracking or Wear
Possible causes include:
Abrasion
Excessive temperature
Chemical exposure
UV/environmental exposure
Mechanical stress
Age
Restricted Airflow
Possible causes include:
Incorrect tube diameter
Kinked tubing
Damaged tubing
Excessive tube length
Blocked passage
PU Tube Maintenance
Although pneumatic tubes are relatively simple components, regular inspection can prevent unexpected air leakage and machine downtime.
Maintenance should include:
Checking tubes for cracks
Inspecting for abrasion
Checking tube connections
Checking for leakage
Inspecting routing
Checking for kinks
Inspecting fittings
Replacing damaged sections
Checking machine movement
For high-cycle machines, tubing should be inspected as part of the regular pneumatic maintenance schedule.
PU Tube Replacement
PU tubing should generally be replaced when it shows signs of deterioration such as:
Cracks
Cuts
Abrasion
Flattening
Severe discoloration
Leakage
Permanent deformation
Tube-end damage
When replacing tubing, inspect the connected fitting as well.
If the fitting's gripping mechanism or sealing surface is damaged, replacing only the tube may not solve the problem.
Pneumatic System Servicing
PU tubing should be included in the servicing of the complete pneumatic system.
A service inspection can include:
Tubing inspection
Fitting inspection
Solenoid valve inspection
Cylinder inspection
FRL inspection
Leakage detection
Pressure checks
Tube replacement
Functional testing
Ajay Engineering Solutions can support industrial customers with broader pneumatic equipment maintenance and servicing requirements.
Pneumatic System Refurbishment
For older machinery, PU tubes may become hard, damaged or unsuitable due to age and operating conditions.
A pneumatic-system refurbishment program may include:
Replacement of old tubing
Replacement of damaged fittings
Pneumatic valve inspection
Cylinder inspection
FRL servicing
Leakage elimination
Re-routing of pneumatic lines
Functional testing
This can help restore the reliability of aging automation equipment.
Pneumatic Maintenance AMC
For factories with multiple pneumatic machines, an Annual Maintenance Contract (AMC) can provide planned inspection and preventive maintenance.
AMC support may include:
Pneumatic tubing inspection
Fitting inspection
Leakage checks
Solenoid valve inspection
Cylinder inspection
FRL maintenance
Preventive component replacement
Breakdown support
Pneumatic system servicing
Planned maintenance helps identify deteriorating tubing and fittings before they contribute to machine downtime.
PU Tubes vs Nylon Tubes
Both PU and nylon tubing are widely used in pneumatic systems, but their properties can make them suitable for different applications.
Nylon pneumatic tubing is also commonly used for air and industrial applications, with manufacturers offering PA6 and PA12 tubing. (Vijay Air Control)
The choice should be based on pressure, temperature, flexibility, chemical compatibility, movement and application requirements.
| Feature | PU Tubes | Nylon Tubes |
|---|---|---|
| Flexibility | Generally high | Generally more rigid |
| Routing | Easy around bends | Good for structured routing |
| Dynamic movement | Well suited to many applications | Application dependent |
| Abrasion resistance | Good, depending on grade | Good, depending on grade |
| Automation | Widely used | Widely used |
| Selection | Depends on application | Depends on application |
PU Tubes vs PVC Tubes
PU and PVC tubing should not be treated as interchangeable.
PU is often selected where flexibility and dynamic routing are important, while PVC may be selected for different applications based on its material properties.
The correct tubing depends on:
Medium
Pressure
Temperature
Flexibility
Chemical compatibility
Installation conditions
PU Tubes vs Rubber Air Hoses
PU tubing is generally more compact and lightweight than many conventional rubber air hoses.
The correct choice depends on the air requirement and application.
| PU Tubes | Rubber Air Hoses |
|---|---|
| Lightweight | Generally heavier |
| Compact | Suitable for larger hose applications |
| Easy routing | Robust hose construction |
| Common in automation | Common in tools and industrial air applications |
| Available in small pneumatic sizes | Available in larger hose sizes |
PU Tubes Supplier & Manufacturer in India
When searching for a PU Tubes Supplier in India or PU Tubes Manufacturer in India, customers should evaluate the complete product and application requirements.
Important factors include:
PU material grade
Tube dimensions
Pressure requirement
Temperature
Flexibility
Color
Length
Fitting compatibility
Application environment
Availability
Replacement support
Ajay Engineering Solutions provides PU pneumatic tubes for industrial automation, compressed-air systems and pneumatic machinery, along with related pneumatic products.
Customers can approach us for:
PU Tubes
Pneumatic Tubing
Replacement Tubing
Pneumatic Fittings
Pneumatic Valves
Pneumatic Cylinders
Air Preparation Units
Pneumatic Accessories
Industries Served
PU pneumatic tubes are widely used across:
Industrial Automation
Automotive
Manufacturing
Packaging
Machine Building
Engineering
Textile
Pharmaceutical
Food & Beverage
Material Handling
Assembly Automation
Process Industries
OEM Machinery
General Pneumatic Applications
Polyurethane pneumatic tubing is commonly used in machine building, packaging, textile machinery and industrial pneumatic equipment. (Corvin Polytech)
Why Choose Ajay Engineering Solutions for PU Tubes?
Application-Based Selection
We focus on the actual pneumatic application rather than supplying tubing based only on size.
Supplier & Manufacturer Coverage
This page is optimized for both PU Tubes Supplier in India and PU Tubes Manufacturer in India search intent.
Complete Pneumatic Solution
PU tubes can be supplied alongside:
Pneumatic fittings
Pneumatic valves
Solenoid valves
Pneumatic cylinders
Air preparation units
Pneumatic accessories
Technical Support
Customers can receive assistance with tube selection based on application, dimensions and pneumatic-system requirements.
Maintenance Support
Our support extends beyond product supply to pneumatic system maintenance, servicing, repair support and refurbishment.
AMC Support
Planned pneumatic maintenance programs can include inspection of tubing, fittings, valves and cylinders.
Related Pneumatic Products
This page should link internally to your existing pneumatic cluster:
Pneumatic Products
Link to the main category page.
Pneumatic Fittings
Link to /pneumatic-products/pneumatic-fittings/
Pneumatic Valves
Link to /pneumatic-products/pneumatic-valves/
Pneumatic Solenoid Valves
Link to /pneumatic-products/solenoid-valves/
Pneumatic Cylinders
Link to /pneumatic-products/pneumatic-cylinders/
Air Preparation Units
Link to /pneumatic-products/air-preparation-units/
This creates a strong relationship:
Pneumatic Products
↓
PU Tubes
↔ Pneumatic Fittings
↔ Pneumatic Valves
↔ Solenoid Valves
↔ Pneumatic Cylinders
↔ Air Preparation Units
Get the Right PU Tube for Your Application
The right pneumatic tube can improve the reliability and efficiency of your compressed-air system.
Whether you require standard PU tubes, flexible polyurethane tubes, colored pneumatic tubing or specialized pneumatic tubing, selection should consider the tube size, pressure, temperature, flexibility, fitting compatibility and application environment.
Send us:
Required tube OD
Required tube ID
Application
Operating pressure
Operating temperature
Required length
Color preference
Existing fitting details
Quantity
Machine/application details
Contact Ajay Engineering Solutions for PU Tubes, Pneumatic Tubing, Pneumatic Fittings and Complete Pneumatic Automation Solutions.
Frequently Asked Questions
What Are PU Tubes?
A typical pneumatic circuit may use PU tubing between:
Air Preparation Unit → Pneumatic Valve → PU Tube → Pneumatic Cylinder
The tubing provides the flexible connection required to route compressed air around machinery.
PU tubing is particularly useful where the pneumatic circuit requires:
Flexibility
Easy routing
Compact installation
Frequent bending
Lightweight tubing
Quick connection
Clean and organized pneumatic piping
Polyurethane pneumatic tubes are commonly used for pneumatic automation, air cylinders, FRL units, machine building and packaging machinery. (Corvin Polytech)
How Do PU Pneumatic Tubes Work?
For example:
Compressor → FRL → Solenoid Valve → PU Tube → Cylinder
When the solenoid valve changes position, compressed air travels through the PU tubing to the appropriate cylinder port.
The cylinder then converts pneumatic energy into mechanical movement.
Depending on the machine, PU tubing can carry air to:
Pneumatic cylinders
Rotary actuators
Air grippers
Pneumatic valves
Air blow systems
Vacuum equipment
Pneumatic tools
The tubing must be selected according to the required pressure, temperature, tube dimensions, fittings and application environment.
Why Choose Polyurethane PU Tubes for Pneumatic Systems?
Key advantages can include:
Flexible construction
Easy installation
Lightweight design
Good kink resistance
Good abrasion resistance
Easy routing around machinery
Suitable for compact pneumatic circuits
Available in multiple sizes
Available in different colors
Suitable for automation applications
Manufacturers commonly describe polyurethane pneumatic tubes as flexible and suitable for automation, machine building and dynamic applications. (Corvin Polytech)
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