Screw Tube
Screw Tube (S)
Excellent fluid rectification and heat exchange capabilities, and increased heat exchange by using ultra-conductive material. This pliable tube is manufactured to customer-specified lengths, and can be made with silver-soldered metal fittings.
Features and Attributes:
- Excellent fluid rectification and heat exchange capabilities
- Pliable tubing
- Increased heat exchange by using ultra-conductive material
- Manufactured to customer-specified lengths
- RoHS Compliant
Standard Product:
- Flexible Tube Material: Custom, please view Customizations for available material.
- Size: Bore diameter of 3mm ~ 20mm OD are available
Services Available Upon Request:
- Can be manufactured with silver-soldered metal fittings.
- Special Treatments: Teflon coating, chemical polishing, and other services available.
Common Applications:
- Optical fiber protection requiring air-tightness
- Cryogenic heat exchanger for artificial heart and lung devices
- Heat exchanger in water-cooled computers
- Delivery pipes for oil, steam, air, and other fluids in vacuum equipment
Stock Level: Non-stock made to order item. General lead time is 6-8 weeks.
| Model (Part Number) | OD ±0.2mm (inch) | Thickness (mm) | Minimum Bending Radius ±0.5 (mm) | Maximum work Pressure rated (Kg/cm²) | Burst pressure (Kg/cm²) | Maximum Length (mm) | Material |
| S-3.1 | 3.1 (0.122) | 0.1 to 0.2 | 9 | 10 | – | 550 (screw/500) |
Copper |
| S-6.0 | 6.0 (0.236) | 0.3 to 0.5 | – | – | – | 550 (screw/500) |
Copper |
| S-7.5 | 7.5 (0.295) | 0.25 | 25 | 8 | 20 | 2100 (screw/1800) | Stainless Steel |
| S-8.0 | 8.0 (0.315) | 0.5 | – | – | – | 1000 (screw/940) | Copper |
| S-9.5 | 9.52 (0.375) | 0.6 | – | – | – | 1000 (screw/940) | Copper |
| S-10.0 | 10.0 (0.394) | 0.6 | – | – | – | 1000 (screw/940) | Copper |
| S-11 | 11.0 (0.433) | 0.25 | 40 | 8 | 20 | 2100 (screw/1600) | Stainless Steel |
| S-12.0 | 12.7 (0.500) | 0.6 to 1.0 | – | – | – | 1500 (screw/1200) | Stainless Steel , Copper |
| S-15 | 15.0 (0.591) | 0.6 to 1.0 | – | 7 | 18 | 510 (screw/485) | Aluminum |
| S-15.8 | 15.88 (0.625) | 0.6 to 0.8 | – | – | – | 1500 (screw/1200) | Copper |
| S-18 | 18.0 (0.709) | 0.3 | – | 5 | 15 | 2000 (screw/1800) | Stainless Steel |
Attached are the general available options for customization. Please be advised that there may be restrictions based upon size, and application for usage. Please Contact Us for support on your customization requirements!
Please have the below specs available to inquire about custom screw tubing.
- Model #
- Thickness Required
- Material Properties
- Length Required
- Quantity Required
Available Flexible Metal Tube Materials:
| Material | Grade |
Application |
Features | Applicable Tube Type |
| Stainless Steel | – SUS304 (Standard) – SUS303 – SUS316 – SUS430 |
– General Industrial – Medicinal |
– Rigid – Does not Rust |
– Most tube type |
| Aluminum | – General Industrial – Medicinal |
– Does not Rust – Anti-Static – Lightweight but Less Sturdy – Excellent Thermal Conduction |
– Square Lock A – Interlock Type B – Screw Tube |
|
| Titanium | – General Industrial – Medicinal – Space Engineering |
– Rigid – Anti-Static – Lighter than Stainless Steel |
– Square Lock A | |
| Bronze Phosphate | – C5341 | – Noise Counter-Measure | – Electromagnetic Compatibility (EMC) | – Most tube type |
| Copper | – Noise Counter-Measure | – Electromagnetic Compatibility (EMC) | – Most tube type | |
| Brass | – Noise Counter-Measure | – Electromagnetic Compatibility (EMC) | – Most tube type | |
| Steel | – Galvanized Steel Strip – SK Material (Hardest Steel) |
– General Industrial | – Affordable Price – Heavy – Rusty – Generally Needs to be Sheathed |
– Most tube type |
Sheathing Materials and Information
Adding a resin/rubber coating to a flexible tube provides the following additional benefits:
– Waterproof/resistant
– Oil-proof/resistant
– Attractive appearance
– Additional strength
– Superior insulation
**The following chart displays the most common materials available. Please consult us regarding specifications, minimum lot, delivery date, sheathing combinations, and additional materials available (including any heat or chemical resistance requirements).
| Material Type (Code) | Characteristic | Color | Resin Feature | Surface Appearance |
| PVC/Polyvinyl Chloride (P) | Soft | Black (Standard), Gray, White, Ivory, Red, Pink, Orange, Yellow, Yellow-Green, Green, Blue, Clear | – Pliable – Chemical Resistant – Heat Resistant up to 60°C – High Oil Resistance |
– Glossy – Matte – Clear |
| Semi rigid | Black | – Slightly Hard – Smooth Surface – Chemical Resistant – Heat Resistant up to 60°C – Oil Resistant |
– Glossy | |
| Flame Resistant | Black, Gray, White, Red, Pink, Orange, Yellow, Green, Blue | – Pliable – Chemical Resistant – Heat Resistant up to 60°C – High Oil Resistance |
– Glossy | |
| Flame Resistant, UL Standard | Black | – Pliable – Chemical Resistant – Heat Resistant up to 105°C – High Oil Resistance |
– Matte | |
| Polyethylene (PE) | Low density (LDPE) | Black | – Harder than the Soft Hard Type – Smooth Surface – Chemical Resistant – Heat Resistant up to 70°C – High Oil Resistance |
– Glossy |
| Polyester Elastomer (TEEE) |
We can provide soft(ShoreA90) to Semi rigid(ShoreD72) | Black Opaque | – Pliable – Weatherproof – Heat Resistance up to 120°C |
– Glossy |
| Silicone Rubber (Si) | Soft | Black, Gray | – Pliable – Heat Resistance up to 180°C |
– Matte |
| Fluorocarbon Resin (FEP) (ETFE) (PFA) |
Flame Resistant | Black | – Less Pliable – Excellent Chemical and Oil Resistance – Slippery Non-Stick Surface – Heat Resistant up to 220°C |
– Glossy |
| Polyurethane (PU) | Ester Grade | Black | – Pliable – Abrasion Resistant – Heat Resistant up to 70°C |
– Glossy |
| Ether Grade | Black, Ivory | – Pliable – Abrasion Resistant – Water Soluble – Heat Resistant up to 70°C |
– Glossy | |
| Olefin Elastomer (O) | Soft | Black | – Pliable – Weatherproof – Heat Resistant up to 60°C |
– Matte |
PVC Sheathing Varieties
| Figure Num. | Sheathing Variety | Part Number Code | Features |
| 1 | Tight-Fitting | KSP- __N | – Standard item – PVC fills the spiral valley to make the finished surface even and smooth. |
| 2 | Vacuum Sheathing | KSP-__N-B | – During processing, sheathing is applied in a vacuum. – The finished surface maintains the spiral pattern of the coil. |
| 3 | Bagging Sheathing | KSP-__N-F | – Sheathing is applied only on the surface of the tube and the spiral valley contains no PVC. The surface of the sheathing will be completely smooth. |
| N/A | Heat Shrink Sheathing | KSP-__N + Shrink tube type# | – Please contact us for more details. |
Other Services
Double Washing and Chemical Polishing
Double washing:
Double washing treatment (using detergent) can be applied to tubes for high precision applications.
Chemical polishing:
We offer tubes with chemical polishing, providing extra shine for optical applications.
※ Special polishing for semiconductor-quality applications also available.
Instructions on How to Measure Bend Radius: PDF Here