AIX BOILER Glass-Lined Pipes | Original Factory | Corrosion & High Temperature Resistant Enamel Pipes | Industrial Customization

Glass-lined pipes (also known as enamel pipes) are core anti-corrosion pipelines for transporting corrosive media in chemical, pharmaceutical, food, environmental protection and other harsh corrosion scenarios. The core principle is a composite structure of carbon steel/cast iron substrate + high-silicon corrosion-resistant glass-lined layer: high-quality low-carbon steel or cast iron is used as the pipe substrate, and high-purity silicon-based corrosion-resistant enamel is uniformly sprayed on the inner wall and liquid contact surface. After segmented high-temperature sintering at 860-920℃, the enamel fuses physically and chemically with the metal substrate to form a dense, non-porous, smooth and non-stick glass protective layer with a thickness of 0.8-1.5mm. It retains the mechanical strength and pressure resistance of metal pipes while possessing the extreme chemical inertness and corrosion resistance of glass, completely isolating the medium from the metal substrate to eliminate corrosion, pollution and leakage risks. Designed and manufactured in strict accordance with GB/T 25025-2025 Technical Requirements for Glass-Lined Equipment, GB/T 7989 Test Methods for Glass-Lined Coatings and TSG 21 Special Equipment Safety Specifications, it is an ideal choice for transporting highly corrosive media{insert\_element\_1\_}.

1. Strength of AIX BOILER Export-Oriented Glass-Lined Pipes – Original Factory

AIX BOILER is a modern original factory specializing in R&D, production and export of glass-lined anti-corrosion equipment, pipes, valves and instruments. With over 10 years of deep cultivation in glass-lined pipes, we own standardized enameling workshops, CNC precision processing lines, glass-lined layer testing laboratories, pressure testing centers and professional R&D teams. We master core processes including multi-layer spraying, segmented high-temperature sintering, stress relief and spark detection, controlling the entire process from substrate forming, sandblasting, enameling to finished product inspection independently. No middlemen, no outsourcing, ensuring controllable quality and optimal cost for every pipe.

Our products have passed CE, ISO9001, FDA, SGS and other international certifications, adaptable to global working conditions with different medium corrosion, temperature, pressure and connection standards. We support multi-language labels and manual customization, exporting to over 60 countries in Southeast Asia, Middle East, Africa, Europe, South America and other regions. Cumulative exports of glass-lined pipes and fittings exceed 15,000 sets, serving global customers in chemical, pharmaceutical, food, environmental protection and other industries with unanimous recognition. As an original factory, we provide full OEM/ODM customization services, from nominal diameter, length, pressure rating, connection method (loose flange/fixed flange), fitting type (straight pipe, elbow, tee, reducer) to special working condition reinforcement treatment, all can be customized according to needs, providing customers with one-stop glass-lined pipe anti-corrosion solutions.

2. Core Technical Parameter Table of AIX Glass-Lined Pipes

3. Product Structure & Core Advantages

1. Extreme Corrosion Resistance for Harsh Corrosion Conditions
The glass-lined layer adopts high-silicon corrosion-resistant enamel with extremely strong chemical stability, resistant to all inorganic acids, organic acids, salt solutions, organic solvents and corrosive gases except hydrofluoric acid, hot concentrated phosphoric acid (>180℃, concentration ≥60%) and high-concentration strong alkali (pH>12, >80℃). Its corrosion resistance far exceeds 304/316L stainless steel, with no metal ion precipitation and no medium pollution, fully complying with food and pharmaceutical GMP clean standards, completely solving the industry pain points of ordinary carbon steel/stainless steel pipes: easy corrosion, short service life and material pollution.

2. Smooth Non-Stick Surface, Low Flow Resistance & Easy Cleaning
The glass-lined layer has a surface roughness Ra ≤0.1μm, extremely smooth, non-sticky, non-scaling and non-crystallizing, greatly reducing medium transport resistance, lowering energy consumption and material residue, facilitating pipe cleaning and sterilization. Especially suitable for transporting high-viscosity, easy-crystallizing and easy-adhesive media (such as dyes, slurries, pharmaceutical intermediates), avoiding pipe blockage and material waste.

3. High Temperature & Thermal Shock Resistance, Wide Adaptability
Long-term stable working temperature: -20℃~200℃, able to withstand frequent temperature fluctuations and thermal shock. The glass-lined layer does not crack, peel, soften or embrittle, adapting to complex working conditions such as boiler high-temperature steam, acidic condensate, outdoor installation in cold regions. Its operational stability far exceeds ordinary anti-corrosion pipes such as plastic and FRP.

4. Sturdy Structure, Reliable Pressure Resistance & Long Service Life
Adopts a "metal substrate + glass-lined layer" composite structure. The substrate uses boiler-grade high-quality low-carbon steel/cast iron with high mechanical strength and strong pressure resistance (up to 2.5MPa), able to withstand pipeline system pressure fluctuations and external impacts. The glass-lined layer has a Mohs hardness of 6-7, wear-resistant and erosion-resistant, able to withstand long-term erosion of particle-containing media. Under normal use, the pipe service life can reach 10-15 years, 3-5 times that of ordinary anti-corrosion pipes, greatly reducing replacement and maintenance costs.

5. Complete Fittings, Standardized Connections & Easy Installation
Provides a complete fitting system: straight pipes (500-3000mm), 45°/90° elbows, equal/reducing tees, crosses, concentric/eccentric reducers, flange nipples, etc., meeting complex pipeline layout requirements. Connection methods include Type A loose flange, Type B cast iron flange, Type C fixed flange, strictly following international standards such as HG20592, ANSI B16.5, DIN2501. The flange sealing surface is precision-ground, matched with PTFE anti-corrosion gaskets, ensuring reliable sealing and easy installation/disassembly without special tools, suitable for pipeline connection of various glass-lined reactors, storage tanks and towers.

6. Original Factory Customization, Global Adaptation & Controllable Quality
As an original factory, AIX can customize diameter, length, pressure rating, connection standard and fitting combination according to customer working conditions (medium, temperature, pressure, installation environment), supporting special reinforced enameling processes (improving temperature/pressure/erosion resistance). We provide complete export qualifications, customs declaration documents and multi-language manuals, strictly producing in accordance with international standards. Each pipe undergoes appearance inspection, glass-lined thickness detection, 20kV spark leak detection, hydrostatic strength test (1.5 times nominal pressure) and air tightness test before delivery, 100% qualified before leaving the factory, with full quality traceability.

4. Full Export Service System of AIX Glass-Lined Pipes

1. Professional Customization: Provide customized solutions and drawings based on customer working condition parameters, pipeline layout and connection requirements, determining diameter, length, pressure, fitting type and connection standard;
2. Complete Qualifications: Provide CE, ISO, FDA, SGS, material reports, glass-lined layer test reports, hydrostatic test reports, factory certificates and other complete documents to meet import supervision and customs clearance requirements of various countries;
3. Strict Inspection: Full-process inspection for each pipe to ensure the glass-lined layer is free of pinholes, cracks and peeling, with qualified pressure, sealing and corrosion resistance;
4. Professional Packaging: Shockproof foam + solid wood box packaging with separate protection for glass-lined surfaces, suitable for sea, land and air transportation to avoid collision and damage during transit;
5. Global After-Sales: 7×24-hour English technical support, remote guidance for installation, commissioning and maintenance, lifetime supply of fittings, seals and repair services to solve customer worries.

5. Executive Standards & Authoritative Certifications

Chinese Standards: GB/T 25025-2025 Technical Requirements for Glass-Lined Equipment, GB/T 7989 Test Methods for Glass-Lined Coatings, HG/T 2130 Glass-Lined Pipes, TSG 21 Safety Technical Supervision Regulations for Stationary Pressure Vessels
International Standards: ANSI B16.5, DIN 28008, ISO 4626
Export Certifications: CE, ISO9001, FDA, SGS (available on request)

6. Manufacturing Process & Quality Compliance

AIX glass-lined pipes adopt lean manufacturing from the original factory with strict full-process control: high-quality carbon steel/cast iron pipe blank forming → CNC precision processing of pipe ends and flanges → sandblasting (Sa2.5 grade, completely removing oxide scale and impurities) → multiple uniform spraying of high-silicon corrosion-resistant enamel → segmented high-temperature sintering at 860-920℃ (5-9 times to ensure tight fusion of enamel and substrate) → cooling stress relief → precision grinding of flange sealing surfaces → 20kV spark leak detection → hydrostatic/air tightness test → packaging and delivery. The glass-lined layer is uniform and dense, free of bubbles, pinholes and cracks, with strong bonding force to the substrate. Each pipe has a unique code for full quality traceability, ensuring compliance with national and international standards, safe, reliable and durable.

7. Application Scenarios & Compatible Equipment

With excellent corrosion resistance, smoothness, high temperature resistance and long service life, AIX glass-lined pipes are widely used in:
- Chemical Industry: Transport pipes for hydrochloric acid, sulfuric acid, nitric acid, organic solvents, slurries and corrosive gases
- Pharmaceutical Industry: Transport of pharmaceutical intermediates, APIs, sterile liquids and clean media, complying with GMP standards
- Food Industry: Transport of food fermentation, condiments, acidic beverages and high-temperature materials, complying with food-grade safety
- Environmental Protection Industry: Sewage treatment, acidic waste liquid, waste gas purification, desulfurization and denitrification system pipes
- Metallurgical Industry: Transport of acidic media in pickling, leaching and wastewater treatment systems
- Boiler Industry: Boiler desulfurization, denitrification, acidic condensate and corrosive steam pipes

8. Installation & Operation Notes

1. Installation: Handle with care, prohibit knocking or collision on the glass-lined surface; use PTFE anti-corrosion gaskets for flange connection, tighten bolts diagonally and evenly, prohibit unilateral force to avoid flange deformation and enamel cracking; use arc brackets (lined with rubber) for pipe support with a span ≤2m to avoid stress from pipe sagging;
2. Medium: Prohibit contact with hydrofluoric acid, concentrated phosphoric acid >180℃ and high-temperature strong alkali with pH>12 to avoid corrosion of the glass-lined layer;
3. Operation: Prohibit overpressure and over-temperature operation, avoid excessive pressure fluctuations to prevent impact damage to the enamel layer;
4. Maintenance: Regularly check the integrity of the glass-lined layer and flange sealing, prohibit scraping the glass-lined surface with metal tools;
5. Storage: Seal both ends of uninstalled pipes and store in a dry and ventilated place to avoid moisture and collision damage to the enamel layer.

Choose AIX BOILER glass-lined pipes for corrosion-resistant, smooth, high-temperature-resistant and long-life anti-corrosion pipeline solutions. As an original factory, we take quality as the core, customization as the advantage and service as the guarantee. Welcome global customers to contact us and visit our factory for win-win cooperation in the anti-corrosion industry!