WH-Polyurethane (PU)Tube
WH-Polyurethane (PU)Tube is designed for compressed-air lines used in pneumatic equipment and automation systems. This polyurethane tubing is available in multiple metric diameters and colour options, allowing buyers to select a suitable tube for their air-line layout, fitting size and operating conditions.
Product Overview
Polyurethane tubing is used to route compressed air through pneumatic circuits. The WH series includes straight tubing in different outside diameters, corresponding inside diameters and colour variations. The correct selection depends on the required airflow, fitting compatibility, installation space, bend radius and working temperature.
For procurement and maintenance teams, checking both the tube outside diameter and inside diameter is important. The outside diameter determines fitting compatibility, while the inside diameter affects the available flow passage. Select the tube against the equipment and pneumatic circuit requirements rather than choosing by colour or outside diameter alone.
Key Features
- Polyurethane tubing intended for compressed-air pneumatic lines.
- Metric outside-diameter options from 4 mm to 16 mm.
- Corresponding inside-diameter options from 2 mm to 11 mm.
- Multiple colour options for identifying different air lines in pneumatic circuits.
- Minimum bend radius information provided for each listed outside diameter.
- Recommended pressure values vary with working temperature.
- Suitable for use with compatible push-to-connect pneumatic fittings.
Confirm the exact size, colour and pressure-temperature requirements for the selected tube before ordering.
Technical Specifications
| Specification | Details |
|---|---|
| Product name | WH-Polyurethane (PU)Tube |
| Tube series | WH |
| Material | Polyurethane (PU) |
| Medium | Compressed air |
| Outside diameter range | 4 mm to 16 mm |
| Inside diameter range | 2 mm to 11 mm |
| Colour options listed | Blue, Black, Red, Yellow, Silver and Transparent, subject to tube size |
| Minimum bend radius | 10 mm to 140 mm, depending on outside diameter |
| Recommended pressure range | 7 bar to 10 bar, depending on working temperature |
| Working temperature reference | 5°C to 60°C, as shown in the pressure-temperature table |
| Tube wall thickness | Not specified in the WH tube entry |
| Supply length | Confirm the required length in metres |
Available Tube Sizes
The published WH-series catalogue lists the following outside and inside diameter combinations:
| Outside diameter (OD) | Inside diameter (ID) | Minimum bend radius |
|---|---|---|
| 4 mm | 2 mm | 10 mm |
| 6 mm | 4 mm | 15 mm |
| 8 mm | 5 mm | 25 mm |
| 10 mm | 7 mm | 30 mm |
| 12 mm | 8 mm | 35 mm |
| 14 mm | 10 mm | 130 mm |
| 16 mm | 11 mm | 140 mm |
The minimum bend radius is important when routing tubing around machine frames, pneumatic panels and moving equipment. Maintain the recommended bend radius for the selected diameter to help avoid excessive bending and potential leakage.
Colour Options
Colour variations can help maintenance teams distinguish separate air lines within a pneumatic circuit. The published catalogue lists the following colour availability by tube diameter:
| Tube outside diameter | Colours listed |
|---|---|
| 4 mm | Blue, Black, Red, Yellow, Silver, Transparent |
| 6 mm | Blue, Black, Red, Yellow, Silver, Transparent |
| 8 mm | Blue, Black, Red, Yellow, Silver, Transparent |
| 10 mm | Blue, Black, Red, Yellow, Silver, Transparent |
| 12 mm | Blue, Black, Red, Yellow, Silver, Transparent |
| 14 mm | Blue |
| 16 mm | Blue |
These are the colour options shown in the published catalogue. Confirm current colour availability for the required diameter when requesting a quotation.
Recommended Pressure and Working Temperature
The WH-series catalogue provides recommended pressure values against working temperature. The pressure recommendation reduces as the temperature increases.
| Recommended pressure | Working temperature |
|---|---|
| 10 bar | 5°C to 30°C |
| 9 bar | 30°C to 40°C |
| 8 bar | 40°C to 50°C |
| 7 bar | 50°C to 60°C |
These are the catalogue’s recommended pressure-temperature values. Do not assume that the 10 bar figure applies at every temperature. For operating conditions close to a range boundary, especially 30°C, confirm the applicable rating with the supplier before installation.
Tube Construction and Design
The WH-Polyurethane (PU)Tube is a flexible pneumatic tube made from polyurethane. Its listed dimensional options allow the tube to be selected according to the required pneumatic fitting and air-line layout.
The tube diameter also determines the permitted minimum bend radius shown in the technical table. Avoid sharp bends, twisting or routing that places unnecessary stress on the tubing. Use the appropriate size and installation method for the pneumatic circuit.
Connection Options
The WH-series tube is intended for use with compatible pneumatic push-to-connect fittings. Fitting selection must match the tube outside diameter and the connection requirements of the equipment.
During installation:
- Cut the tube end square and free from burrs using a suitable tube cutter.
- Keep the cut end clean before inserting it into the fitting.
- Push the tube fully into the fitting until it reaches the positive stop and passes the sealing point.
- Check that the tube is properly seated before putting the air line into service.
- Avoid pulling the tube heavily after insertion.
Incorrect cutting or incomplete insertion can affect the sealing of a pneumatic connection. Verify the fitting and tube compatibility before pressurising the system.
Applications
WH-Polyurethane (PU)Tube is intended for compressed-air distribution in pneumatic systems. It can be considered for suitable air-line routing in industrial machinery, pneumatic control circuits and automation equipment, provided the tube size, fitting and pressure-temperature conditions match the installation.
The product specification identifies compressed air as the medium. Do not assume that this tube is suitable for water, fuel, oil, chemicals, drinking water or other liquids unless separate compatibility documentation confirms that use.
Product Selection Guide
To select the appropriate polyurethane tube, check the following points before ordering:
- Outside diameter: Match the tube OD with the pneumatic fitting.
- Inside diameter: Check the flow passage required by the equipment and circuit.
- Working pressure: Select according to the operating pressure and temperature.
- Bend radius: Check the minimum bend radius for the selected tube size.
- Colour: Select the required colour for air-line identification, subject to size availability.
- Length: Specify the total required length in metres.
- Fittings: Confirm the compatible push-to-connect fitting size and connection type.
For replacement work, compare the existing tube outside diameter, inside diameter, colour and fitting arrangement before ordering. Do not assume that two tubes with the same outside diameter have the same inside diameter.
Industrial Buyer Guide
For maintenance departments, machine builders and automation integrators, accurate tube selection helps maintain consistent pneumatic connections. Record the tube dimensions, colour, working pressure, working temperature and fitting type for each circuit.
For repeat purchases, retain the confirmed specification and required length. When modifying an existing pneumatic system, recheck the pressure and temperature conditions rather than automatically reusing the previous tube specification.
PU Tube Supplier in Surat
Allarakhu and Sons welcomes enquiries for WH-Polyurethane (PU)Tube from pneumatic equipment users, machine builders, maintenance teams and industrial procurement departments in Surat, Gujarat.
Share the required outside diameter, inside diameter, colour, working pressure, temperature and total length. Our team can review the enquiry and help confirm the appropriate product details before quotation.
Contact Allarakhu and Sons on +91 98251 78797 or +91 84011 31000.
Gujarat Industrial and GIDC Enquiries
We welcome enquiries from businesses in Surat and surrounding industrial locations, including Surat GIDC, Sachin GIDC, Pandesara, Udhna, Hazira, Palsana and Kadodara. Buyers from Ankleshwar GIDC, Bharuch GIDC and Vapi GIDC can also submit their pneumatic tubing requirements.
For a quotation, mention the tube diameter, colour, required length, operating pressure and temperature, together with the type of pneumatic fitting being used.
India-Wide Product Enquiries
Allarakhu and Sons welcomes enquiries from industrial buyers in Ahmedabad, Mumbai, Pune, Delhi, Bengaluru, Hyderabad, Jaipur, Chennai, Chandigarh and Lucknow. Businesses in Noida, Gurugram, Indore, Nagpur, Goa, Dehradun, Kochi, Shimla and Srinagar can also share their requirements.
Buyers from other locations across India can provide their required tube size, colour, length and delivery destination for quotation review.
Request a WH-Polyurethane (PU)Tube Quotation
To request a quotation, share the required tube outside diameter, inside diameter, colour, length in metres, working pressure, working temperature and fitting details. If you are replacing existing pneumatic tubing, provide its measurements or a clear photograph showing the tube dimensions and colour.
Allarakhu and Sons
A-3, 7/4720, Badri Mansion, Lal Darwaja Station Road, Surat – 395003, Gujarat, India
Phone: +91 98251 78797 / +91 84011 31000
Website: allarakhuandsons.in
Frequently Asked Questions
What is WH-Polyurethane (PU)Tube used for?
It is polyurethane tubing intended for compressed-air pneumatic lines. Confirm the required tube size, fitting compatibility and operating conditions before use.
What sizes are available in the WH polyurethane tube series?
The published range includes outside diameters of 4, 6, 8, 10, 12, 14 and 16 mm. Corresponding inside diameters are 2, 4, 5, 7, 8, 10 and 11 mm respectively.
What colours are listed for the PU tube?
Blue, Black, Red, Yellow, Silver and Transparent are listed for sizes from 4 mm to 12 mm OD. The catalogue lists Blue for 14 mm and 16 mm OD. Confirm current availability before ordering.
What is the recommended pressure of the polyurethane tube?
The catalogue lists 10 bar at 5°C to 30°C, 9 bar at 30°C to 40°C, 8 bar at 40°C to 50°C and 7 bar at 50°C to 60°C. Use the recommended pressure applicable to the operating temperature.
What is the minimum bend radius?
The listed minimum bend radius varies by outside diameter, from 10 mm for 4 mm OD tubing to 140 mm for 16 mm OD tubing. Refer to the size table for the corresponding value.
Can this PU tube be used with push-to-connect fittings?
Yes, the tubing is intended for compatible pneumatic push-to-connect fittings. The fitting must match the tube outside diameter, and the tube should be cut square and fully inserted to the fitting’s positive stop.
Can this polyurethane tube be used for water or oil?
The WH-series specification identifies compressed air as the medium. Do not use it for water, oil, fuel or chemicals unless separate product documentation confirms suitability.
How do I order the required tube length?
Specify the required tube diameter, colour and total length in metres when requesting a quotation. Confirm the current supply length and colour availability for the selected size.
Can I request a quotation from outside Surat?
Yes. Buyers across India can contact Allarakhu and Sons with the required size, colour, length, application and delivery destination.
