Stainless Steel Molded Pipes

Overview

Anhui Xinfulong's Stainless Steel Molded Pipes combine the mechanical strength of stainless steel with the exceptional corrosion resistance of high-performance fluoropolymer linings. Manufactured using advanced compression molding technology, these pipes are engineered for reliable fluid transport in semiconductor, wet chemical, new energy, pharmaceutical, and chemical processing applications where both structural integrity and chemical purity are paramount.

The stainless steel outer shell provides high-pressure tolerance, impact resistance, and structural stability, while the internal fluoropolymer lining (PFA, FEP, or PTFE) delivers superior anti-corrosion and anti-adhesion properties-. This dual-layer construction ensures long service life, minimal maintenance, and consistent performance even in the most aggressive chemical environments.

Key Features

• Dual-Layer Construction — Stainless steel outer shell provides mechanical strength and pressure resistance, while the inner fluoropolymer lining (PFA/FEP/PTFE) offers exceptional chemical resistance and non-stick properties.

• Superior Corrosion Resistance — The fluoropolymer lining is inert to virtually all chemicals except molten alkali metals and certain fluorine compounds, making it ideal for handling acids, alkalis, solvents, and high-purity media.

• High Mechanical Strength — Stainless steel substrate withstands high operating pressures (up to 2.5 MPa), mechanical shock, and thermal cycling without deformation or failure.

• Excellent Thermal Stability — PFA-lined pipes operate continuously from -50°C to 260°C, while PTFE linings maintain performance up to 260°C, ensuring reliable service across a wide temperature range.

• Ultra-High Purity — The fluoropolymer lining contains no extractable metal ions, making these pipes suitable for semiconductor-grade and ultra-pure chemical applications where contamination must be minimized.

• Non-Stick Surface — The low-friction, anti-adhesion properties of fluoropolymer linings prevent scale buildup, sludge accumulation, and product adhesion, reducing cleaning frequency and maintenance costs.

• Leak-Proof Integrity — Precision molding ensures intimate bonding between the stainless steel shell and the fluoropolymer lining, eliminating gaps and preventing permeation or delamination.

• Customizable Configurations — Available in a wide range of diameters, lengths, wall thicknesses, and end connections (flanged, threaded, or welded) to meet specific process requirements.

Manufacturing Process

Our stainless steel molded pipes are produced using advanced compression molding technology in state-of-the-art facilities-:

1. Steel Preparation — Stainless steel pipes are cut, welded (if required), and surface-treated to ensure optimal bonding with the lining material.

2. Fluoropolymer Loading — High-purity PFA, FEP, or PTFE resin is precisely loaded into the steel pipe cavity.

3. Compression Molding — The assembly is heated and pressurized, causing the fluoropolymer to melt, flow, and uniformly coat the internal surface of the steel pipe-.

4. Sintering & Curing — The molded pipe undergoes controlled heating to achieve full density, eliminate voids, and ensure maximum lining integrity-.

5. Flanging & Finishing — Flanges or other end connections are formed, and the pipe is machined to final dimensions.

6. Quality Inspection — Each pipe undergoes rigorous testing including dimensional verification, lining thickness measurement, spark testing, and pressure testing.

Critical production steps are carried out in Class 1000 and Class 10,000 cleanrooms, ensuring the highest levels of purity and quality.

Technical Specifications

Available Configurations

• Straight Pipes — Standard lengths with flanged or threaded ends for easy installation

• Elbows — 45°, 90°, and custom angles for directional changes

• Tees & Crosses — Equal and reducing configurations for branching

• Reducers — Concentric and eccentric for diameter transitions

• Custom Fabrications — Specialty shapes, non-standard dimensions, and complex geometries

Applications

Our stainless steel molded pipes are widely used in:

• Semiconductor Manufacturing — Transport of ultra-pure chemicals, wet etchants, and cleaning solutions with zero metal ion contamination

• Wet Electronic Chemicals — Handling of high-purity acids, solvents, and corrosive media in electronics-grade chemical production

• Chemical Processing — Transport of aggressive chemicals including sulfuric acid, hydrochloric acid, nitric acid, hydrofluoric acid, and caustic solutions

• Pharmaceutical & Biotech — High-purity fluid transfer with GMP-compliant materials and cleanability

• New Energy — Battery chemical handling, photovoltaic wet processing, and electrolyte transport

• Food & Fine Chemicals — Sanitary fluid transfer requiring corrosion resistance and non-contamination

Why Choose Xinfulong Stainless Steel Molded Pipes?

• Integrated Manufacturing — From steel preparation to final inspection, all processes are completed in-house under strict quality control

• Cleanroom Production — Critical processes performed in Class 1000/10,000 cleanrooms, ensuring product purity

• Industry-Leading Equipment — Advanced molding, sintering, machining, cleaning, and testing equipment for consistent quality

• Expert R&D Support — Backed by collaboration with Japanese and Korean experts and leading domestic research institutions

• Comprehensive Certifications — ISO 9001, ISO 14001, ISO 45001, and TS pressure piping component certified

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

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

Customization Options

We offer fully customizable stainless steel molded pipes to meet your specific requirements:

• Custom diameters, lengths, and wall thicknesses

• Choice of stainless steel grade (304, 304L, 316, 316L, or others)

• Choice of lining material (PFA, FEP, or PTFE)

• Custom end connections and flange standards (DIN, ANSI, JIS, or others)

• Special surface treatments and finishes

• Non-standard shapes and complex geometries

• Tailored performance specifications for pressure and temperature