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PA (NYLON) TUBES
Nylon tubes, also known as Polyamide Tubes or PA Tubes, are cylindrical, hollow constructions composed of polyamide resins that are designed for pneumatic, fluid, or gas transportation. Their main purpose, in contrast to solid nylon rods or sheets, is to offer a resilient, flexible, and lightweight media transfer channel in dynamic systems.
What are the key features of PA tubes?
-Abrasion Resistance: Perfect for pneumatic systems and other high-friction settings.
-Durability and Flexibility: Resists kinking and maintains shape under bending stress.
-Low Permeability: Reduces the diffusion of gases and liquids, which is important for fuel or air lines.
-Chemical Resistance: Depending on the type of PA, it can withstand fuels, oils, alkalis, and weak acids.
5Smooth Interior: Lowers particle accumulation and pressure drop.
-Temperature Tolerance: Short-term peaks are higher, operating between -40°C and +120°C.
How many types of PA Nylon tubes are there?
1、Standard PA6/PA66 for general-purpose application is non-reinforced.
2、Braid-Reinforced: High-pressure braid made of steel and polyester (such as PA12+braid).
3、Conductive: Packed with carbon to dissipate static in explosive settings.
Technical Specifications:
1、 Density: 1.01-1.02 g/cm³ (PA12), 1.12-1.15 g/cm³ (PA6/PA66).
2、PA6 (3.0-3.5%), PA66 (2.5-3.0%), and PA12 (1.5%) absorb moisture.
3、PA6 and PA66 have tensile strengths of 70–100 and 80–120 MPa, respectively.
4、PA6 (~220°C), PA66 (~260°C), and PA12 (~178°C) are the melting points.
5、 Materials: PA66 (high-temperature), PA11/PA12 (flexible, fuel-resistant), and PA6 (general use).
6、Thermal Expansion: High, requiring careful planning.
7、~20 kV/mm is the dielectric strength.
8、Wall thickness: 2 mm to 50 mm (customizable).
9、Dimensions: 2 mm to 400 mm for inner diameter (ID).
4 mm to 500 mm is the outer diameter (OD).
What are the advantages and benefits of PA nylon tubes?
1、 Lightweight: only one-seventh as heavy as steel tubes.
2、Noise dampening: Compared to strong metal lines, it lessens vibration.
3、Corrosion-Free: There is no oxidation or rusting.
4、Cost-effective: Less expensive installation and upkeep.
5、Installation is simple because it doesn't require welding and can be cut using common tools.
What applications are PA Nylon tubes used for?
1、Medical: peristaltic pump tubing, endoscope channels.
2、Automotive: Air brake systems, fuel lines, and brake fluid transfer.
3、Food/Beverage: dairy processing (food-grade PA), beverage dispensing.
4、Pneumatics: robotic actuators and air supply lines.
5、Industrial: Coolant lines and networks of compressed air.
6、Hydraulics: Agricultural machines and other low-pressure hydraulic systems.
How to store and handle PA Nylon tubes?
1、Coiling: To prevent distortion, large-diameter tubes should be coiled freely (≥20x OD).
2、To prevent UV exposure, store in dark or opaque packaging.
3、Dry Environment: If stored for more than six months, pre-dry before using to prevent moisture absorption.
4、Temperature Control: To avoid softening, keep the temperature below 40°C.
Frequently Asked Questions
Question1: Can you reuse nylon tubes?
Answer: Yes, provided that the fittings are unbroken; nevertheless, do not repeatedly bend at the same location.
Question2: Can gasoline be handled by PA tubes?
Answer: While PA6/PA66 tubes deteriorate with extended exposure, PA11/PA12 tubes are resistant to gasoline.
Question3: What about nylon tubes' shelf life?
Answer: If stored correctly, it should last around five years; yellowing is a sign of UV deterioration.
Question4: How to connect tubes made of nylon？
Answer: Basically, we attach nylon tubes using compression fittings, push-to-connect fittings, or heat welding (for reinforced varieties).
Question5: What distinguishes PVC tubes from PA tubes?
Answer: While PVC is less expensive yet fragile in cold weather, PA offers greater durability and heat resistance.
Question6：What is the nylon tubes' maximum bend radius?
Answer: For non-reinforced materials, the minimum bend radius is 4x OD; for braid-reinforced materials, it is 8x OD.
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