PTFE High-Temperature Isostatic Pressed Pipes

Overview

Anhui Xinfulong's PTFE High-Temperature Isostatic Pressed Pipes are manufactured using advanced isostatic pressing technology (also known as isostatic molding or hydrostatic compression). This process applies uniform hydrostatic pressure from all directions — typically up to 30–35 MPa — to high-purity suspension-grade PTFE resin, producing dense, voidless, and isotropically homogeneous pipe structures with exceptional mechanical integrity.

PTFE (Polytetrafluoroethylene) is the gold standard of fluoropolymers, offering the highest continuous service temperature among all fluoropolymer materials. Our isostatic pressed pipes combine PTFE's inherent chemical inertness and thermal stability with the superior density, dimensional accuracy, and structural uniformity achieved through isostatic compaction.

The isostatic pressing process — leveraging Pascal's principle — ensures that hydraulic pressure is transmitted equally through a fluid medium to a flexible mold or preform, compressing the PTFE powder uniformly and eliminating voids, weld lines, and stress concentrations that plague conventionally extruded or molded pipes. The result is a seamless, high-density pipe that delivers reliable performance across the most demanding high-temperature, high-pressure, and highly corrosive service conditions.

Key Features

Superior High-Temperature Performance

• Continuous service from -29°C to +255°C under corrosive media conditions

• Maintains mechanical integrity at elevated temperatures without deformation or loss of sealing performance

• Withstands thermal cycling and thermal shock from ambient to 255°C

• Excellent resistance to creep and stress relaxation at high temperatures

Exceptional Chemical Resistance

• Inert to virtually all chemicals, including concentrated acids, alkalis, solvents, and aggressive etchants

• Ideal for handling hydrofluoric acid (HF), sulfuric acid, nitric acid, hydrochloric acid, and mixed acids-

• Outstanding resistance to permeation — high crystallinity and sufficient wall thickness minimize media penetration

• Suitable for ultra-pure and aggressive media across the full pH range

High-Pressure & Full-Vacuum Capability

• Withstands 3.1 MPa operating pressure at ambient temperature

• Maintains 1.7 MPa operating pressure at 255°C

• Full vacuum service from -29°C to 225°C without collapse or deformation

• Reliable under positive pressure, negative pressure (full vacuum), and alternating pressure conditions

Isostatic Pressing Advantages

• Seamless, voidless construction — no welded joints, no extrusion lines, no potential failure points

• Isotropic mechanical and physical properties — uniform density and strength along all axes

• Superior dimensional stability and tight production tolerances

• High crystallinity and density for enhanced mechanical strength and permeation resistance

• Excellent resistance to thermal expansion and contraction — engineered to withstand temperature cycling without dimensional instability

Ultra-High Purity & Cleanliness

• No metal ion contamination — pure PTFE wetted surface with no metallic contact

• Extremely smooth, non-porous surface prevents particle entrapment, fouling, and microbial growth

• Non-stick, anti-adhesive surface properties enable easy cleaning and low friction loss

• Meets the stringent purity requirements of semiconductor wet process and pharmaceutical applications

Superior Mechanical Properties

• Outstanding resistance to thermal shock and mechanical stress

• High creep resistance under sustained load at elevated temperatures

• Excellent abrasion and wear resistance

• Long service life with minimal maintenance requirements

Technical Specifications

Applications

Our PTFE High-Temperature Isostatic Pressed Pipes are widely deployed in extreme thermal and chemical environments:

Semiconductor Manufacturing

• High-purity chemical delivery lines for wet etching, wafer cleaning, and advanced node processing

• Ultra-pure water (UPW) and chemical distribution systems

• High-temperature chemical bath recirculation lines

• CMP (Chemical Mechanical Planarization) slurry delivery

Wet Electronic Chemicals

• Transfer and distribution lines for high-purity acids, solvents, and etchants at elevated temperatures-

• High-temperature chemical blending and recirculation systems

• Reagent feed lines for critical wet process applications

Chemical Processing

• Corrosive media transfer under high temperature and high pressure

• Pickling lines, acid recovery systems, and chlor-alkali processes

• Handling of concentrated acids, alkalis, and aggressive solvents

• Flammable and hazardous chemical transfer

Pharmaceutical & Biotech

• High-purity fluid transfer with zero contamination risk

• Solvent and reagent delivery systems

• FDA-compliant processing lines

New Energy

• Battery chemical processing and electrolyte handling

• Photovoltaic wet processing lines

• High-temperature chemical recirculation systems

General Industrial

• Natural gas and mineral oil transfer

• Toxic gas monitoring systems

• Paint, varnish, and adhesive delivery lines

• Automotive, electrical, and appliance applications

Why Choose Xinfulong PTFE High-Temperature Isostatic Pressed Pipes?

• Superior Alternative to Extruded & Molded Pipes — Isostatic pressing eliminates weld lines, voids, and stress concentrations that lead to premature failure in conventional pipes, delivering superior density, uniformity, and long-term reliability

• High-Temperature & Full-Vacuum Capability — Engineered to perform at temperatures up to 255°C with full vacuum service, addressing the most demanding process conditions

• Cleanroom Manufacturing — Critical production processes carried out in Class 1000/10,000 cleanrooms, ensuring the highest levels of purity

• Industry-Leading Expertise — Backed by decades of fluoropolymer processing experience and R&D collaboration with Japanese and Korean experts

• Proven Global Track Record — Trusted by clients across Europe, Japan, Korea, Taiwan (China), and beyond

• Comprehensive Quality Assurance — ISO 9001, ISO 14001, ISO 45001 certified with full in-house testing capabilities including dimensional inspection, pressure testing, and vacuum testing

• End-to-End Service — From custom design and material selection to manufacturing, testing, and after-sales support

Customization Options

We offer fully customizable PTFE High-Temperature Isostatic Pressed Pipes to meet your specific requirements:

• Custom diameters from DN25 to DN1600

• Custom wall thicknesses from 3 mm to 20 mm

• Custom lengths (maximum 2000 mm per section)

• Straight pipes, elbows (DN25–DN800), tees (DN25–DN1200), and heads (DN600–DN1600)

• Flanged ends, threaded ends, or plain ends

• Integration with carbon steel or stainless steel outer shells for lined piping systems

• Compliance with GB/T 26500-2011, HG, GB, DIN, ASTM, or JIS standards