PTFE Extruded /Molded Tube/Filled PTFE TUBE

Ⅰ、Features

Teflon extruded pipe and molded pipe using polytetrafluoroethylene suspension polymerization process. In the known plastic polytetrafluoroethylene has good chemical resistance and dielectric properties.

Ⅱ、Types and Specifications:

Ⅲ、Main Properties

Ⅳ、Applications

  Transmission of corrosive liquids or gases such as hydraulic fluid and fuel in the aerospace industry; high pressure air, fuel and hydraulic transmission in the automotive industry; delivery of chlorine, steam, acid-base organic compounds, etc. in the chemical industry; Purity fluid delivery. As PTFE has the best plastic in the high temperature, low corrosion, anti-aging, high insulation and non-stick advantages.

PTFE Tubing Product Overview

Polytetrafluoroethylene (PTFE) tubing is a semi-transparent to white tubular product manufactured from high molecular weight PTFE resin through specialized processing techniques. As a quintessential fluoroplastic, PTFE tubing has become a core conveyance material in high-end sectors such as chemical, semiconductor, and medical industries, thanks to its "Plastic King" exceptional properties. This product series covers full-size specifications from micro fine tubes to industrial large-diameter tubes, and can be functionally modified according to operational requirements.

Core Advantages

· King of Chemical Inertia: Building on the data in Table 1, PTFE tubing resists almost all strongly corrosive media, including aqua regia and hydrofluoric acid. Its chemical stability far exceeds that of traditional materials like glass and ceramics.

· Extreme Temperature Adaptation: As shown in Table 2, its wide temperature range performance (-200 to 260°C) makes it an ideal choice for cryogenic media transfer and high-temperature steam systems. Glass fiber reinforced types can further increase short-term temperature resistance to 300°C.

· Excellent Friction Characteristics: An ultra-low friction coefficient of 0.04-0.08 (see Table 3) allows it to maintain excellent sliding properties even without lubrication, reducing wear rate by over 90% compared to ordinary polyethylene tubes.

Basic Material Properties

Parameter	Value Range	Test Standard	Test Standard
Density (g/cm³)	2.14 - 2.20	ASTM D792	One of the lightest fluoroplastics
Melting Point	327°C	ASTM D3418	Practical use ≤ 260°C
Continuous Service Temperature	-200 ~ 260°C	ASTM D794	Short-term up to 300°C
Tensile Strength (MPa)	20 - 35	ASTM D638	Longitudinal/Transverse difference <15%
Elongation at Break (%)	200 - 400	ASTM D638	Depends on processing method

Chemical Resistance Performance

Medium Type	Resistance Rating (23°C)	Temperature Limit	Exceptions
Strong Acids	Fully Resistant (incl. Aqua Regia)	260°C	Molten Alkali Metals
Strong Bases	Fully Resistant (50% NaOH)	200°C	Fluorine Gas / Chlorine Trifluoride
Organic Solvents	Resists All Common Solvents	150°C	Perfluoroether Solvents
Oxidizing Agents	Resists Conc. Nitric Acid/Hydrogen Peroxide	100°C	Liquid Fluorine

Physical Performance Parameters

 

Parameter	Typical Value	Test Method	Industry Comparative Advantage
Coefficient of Friction	0.04 - 0.08	ASTM D1894	One of the lowest solid materials
Dielectric Strength (kV/mm)	40 - 60	ASTM D149	tanδ < 0.0002 @ 1MHz
Thermal Expansion Coeff. (10⁻⁵/K)	10 - 15	ASTM D696	Thermal deformation compensation needed
Gas Permeability (cm³·mm/m²·d·atm) Helium:	500 - 800	ASTM D1434	Lining treatment needed for barrier

 

Product Specification Series

Type	Inner Diameter Range (mm)	Wall Thickness Tolerance	Special Structure
Pure PTFE Tube	0.5 - 300	±10%	Transparent/Colored Modification
Glass Fiber Reinforced Tube	3 - 150	±7%	Compressive Strength Increased 3-5x
Conductive/Anti-static Tube	5 - 200	±8%	Surface Resistance 10³ - 10⁶ Ω
Multi-layer Composite Tube	10 - 250	±5%	PFA/ETFE Lined

Mechanical Performance Comparison

Performance	Pure PTFE	25% GF Reinforced	Graphite Filled	Carbon Fiber Filled
Creep Resistance (50°C/10MPa)	8% (1000h)	2% (1000h)	3% (1000h)	1.5% (1000h)
PV Limit Value (MPa·m/s)	0.05	0.35	0.25	0.50
Thermal Conductivity (W/m·K)	0.25	0.45	0.6	1.20

Industry Application Standards

Field	Applicable Standard	Key Requirement	Service Life
Chemical Industry	DIN 16964	Burst Pressure ≥4x Working Pressure	5 - 8 years
Semiconductor	SEMI F57	Ultra-pure Grade (Metal Content <1 ppb)	3 - 5 years
Medical	USP Class VI	Biocompatibility Certification	100 Sterilization Cycles
Food	FDA 21 CFR 177.1550	Suitable for Contact with Fatty Foods	Permanent Certification

Processing Technical Parameters

Process	Temperature Range	Pressure Requirement	Precautions
Extrusion Molding	360 - 400°C	15 - 25 MPa	Precise Temp Control ±2°C Required
Compression Sintering	370 - 385°C / 2-4 h	10 - 15 MPa	Step Heating to Prevent Cracking
Secondary Machining	Turning:200 - 250°C	-	Tool Sharpness RA ≤ 0.8 µm

International Certification System

Certification	Test Item	Pass Requirement	Certificate Validity
NSF/ANSI 51	Extractables Test	< 0.1 mg/cm² Migration	5 years
UL 94	Flammability Rating	V-0 Level (1.6mm thickness)	3 years
REACH SVHC	Substance Screening	205 Substances Not Detected	Annual Update

Selection Guide

Operating Condition	Recommended Type	Rationale	Alternative
Ultra-pure Fluid Transfer	Electropolished PFA Lined Tube	Surface Ra ≤ 0.2 µm	Honed PTFE after Sintering
Dynamic Friction Conditions	Graphite Filled PTFE Tube	PV Value Increased 5x	Ceramic Composite Tube
Strong Corrosion + High Temp	Perfluoroelastomer Composite Tube	Resists 300°C Steam	Hastelloy Lined Tube

Concise Application Field Guide

I. Industrial Sector

1. Chemical Industry

   · Strong Acid/Alkali Transfer (Sulfuric Acid/Hydrofluoric Acid, etc.)

   · Corrosive Gas Piping (Chlorine/Sulfur Dioxide)

   · Reactor Associated Piping

2. Semiconductor Manufacturing

   · Ultra-Pure Water Distribution Systems

   · Chemical Reagent Distribution Lines

   · Wafer Cleaning Equipment

II. Medical Sector

1. Medical Devices

   · Endoscope Catheters

   · Hemodialysis Tubing

   · Surgical Instrument Sheathing

2. Pharmaceutical Equipment

   · Liquid Medicine Transfer Lines

   · Sterilization Equipment Connection Tubes

   · Bioreactor Piping

III. Food Sector

1. Food Processing

   · Edible Oil Transfer Lines

   · Dairy Product Production Lines

   · Alcoholic Beverages/Beverage Transfer

2. Packaging Machinery

   · Sauce Filling Tubes

   · High-Temperature Steam Lines

IV. Special Applications

1. Aerospace

   · Fuel System Lines

   · Hydraulic Transmission Lines

2. New Energy

   · Lithium Battery Electrolyte Transfer

   · Fuel Cell Components

(Note: Actual selection must consider medium characteristics, temperature, pressure, and other parameters.)