General High-Precision Small-Diameter Plastic Tubing
General high-precision small-diameter plastic tubing is made from commonly used thermoplastic resins such as PP, PE, PVC, and TPU through precision extrusion. It is suitable for general industrial, medical, fluid delivery, and electronic protection applications that require accurate dimensions, smooth inner walls, and reliable performance. Single-layer, double-layer, and multi-layer structures are available to meet different tubing requirements, with flexible material options, tight dimensional tolerances, and good cost-performance. For applications requiring higher temperature resistance, chemical resistance and low friction, Keli also provides high-precision PTFE tubing.
Materials for General Plastic Tubing
We offer PP, PE, PVC, and TPU options to meet different requirements for flexibility, chemical resistance, transparency, and general performance. Tubing is available in transparent, translucent, or custom colors, with selected grades suitable for food-contact or medical applications.
PP Plastic tube
PP tubing offers good chemical resistance, low moisture absorption and a lightweight structure. It is suitable for general fluid routing, pneumatic systems and applications where chemical resistance and dimensional consistency are required.
PE Plastic tube
PE tubing provides good flexibility, chemical resistance and low moisture absorption. It can be used for fluid transfer, low-pressure pneumatic routing and general-purpose tubing applications.
PVC hose
PVC tubing offers a practical combination of flexibility, transparency and cost efficiency. Transparent or colored options can be produced for general fluid delivery, protection and routing applications.
TPU Plastic tube
TPU tubing provides flexibility, abrasion resistance and good resistance to oils and hydrolysis. It is suitable when the tubing needs to withstand repeated bending, handling or movement.
Material selection can be adjusted according to the required inner diameter, outer diameter, wall thickness, hardness, flexibility and application environment.
Manufacturing Technology for General Plastic Tubing
General Plastic Tubing Double-Layer and Multi-Layer Material Combinations
Different material combinations can be used to balance flexibility, chemical resistance, surface properties and protection requirements within a compact tubing structure.
The ultimate combination
The inner PTFE layer provides an ultra-low coefficient of friction, exceptional temperature resistance, and chemical inertness, ensuring zero fluid residue. The outer TPU layer offers superior flexibility, tear resistance, and abrasion resistance, preventing kinking or collapsing.
Food-grade safety
The inner PE layer ensures excellent food-contact safety and low extractables, while the outer PP layer provides enhanced hardness and impact resistance, making it suitable for critical fluid transport.
Customized tactile experience
Combining TPU of different hardness levels for inner/outer layers (with multi-color options as shown), providing graded softness while meeting complex color-coding requirements.
General Plastic Tubing Technical Parameters and Quality Control
Layer Bonding
Proprietary co-extrusion adhesion technology prevents delamination, ensuring permanent bonding between the dual layers.
Tolerance Control
Equipped with high-precision molds and servo-driven traction systems. Outer diameter (OD) tolerances are controlled within ±0.05mm, with extremely uniform wall thickness and smooth, gel-free inner surfaces.
Physical & Chemical Properties
Resistant to chemicals, oils, and hydrolysis (TPU property), with a wide operating temperature range (depending on specific material combination).
Applications of General Plastic Tubing
Fluid Delivery
Small-diameter plastic tubing for fluid routing, transfer and connection in equipment and compact fluid systems. Material options can be selected according to fluid compatibility and application requirements.
Medical & Laboratory Equipment
Precision tubing for selected medical, laboratory and diagnostic applications where clean inner surfaces, dimensional consistency and suitable material grades are required.
Pneumatic & Instrumentation
Lightweight tubing for air, gas and signal-related routing in compact equipment, instruments and pneumatic systems, with flexible dimensions and material options.
Electronic & Component Protection
Small-diameter tubing for protecting wires, components and small assemblies from abrasion, contact and environmental exposure while maintaining a compact profile.
Custom General Plastic Tubing
Keli customizes high-precision small-diameter plastic tubing to meet specific application and design requirements. Material, ID, OD, wall thickness, tolerance, hardness, color and tubing structure can be tailored to your needs.
For double-layer and multi-layer tubing, Keli can develop suitable material combinations and layer structures based on the required flexibility, surface properties and application conditions. Drawings, samples or specifications can be provided for customized production.
Need Custom Small-Diameter Plastic Tubing?
Keli provides precision-extruded PP, PE, PVC, TPU and multi-layer tubing tailored to your required dimensions, materials and structure. Send us your drawing, sample or specifications to discuss your tubing requirements.