AIX Boiler Glass-Lined Pressure Gauge | Original Factory | Corrosion & High Temperature Resistant Enamel Pressure Gauge | Industrial Customization

Glass-lined pressure gauge (also known as enamel pressure gauge) is a core instrument for accurately monitoring system pressure in corrosive working conditions such as industrial boilers, chemical engineering, and pharmaceuticals. Its core structure consists of carbon steel substrate + high-temperature sintered glass-lined protective layer + precision pressure sensing element. Made of high-quality low-carbon steel as the base for the shell and wetted parts, the inner wall and liquid contact surface are sprayed with high-silicon corrosion-resistant enamel, which is sintered in sections at 860-920℃ to form a dense, smooth and corrosion-resistant protective layer firmly fused with the metal substrate. Equipped with high-precision elastic sensitive elements (Bourdon tube, capsule), it realizes accurate measurement and safe display of corrosive medium pressure. The product is designed and manufactured in strict accordance withGB/T 7989 Test Methods for Glass-Lined Coatings,GB/T 25025-2025 Technical Specifications for Glass-Lined EquipmentandTSG 21 Special Equipment Safety Specification. With a temperature range of -20℃~200℃, measuring range of 0~1.6MPa (customizable), accuracy class ≤1.6, and enamel thickness of 0.8-1.5mm, it combines the structural strength of metal instruments with the extreme corrosion resistance of glass lining, preventing medium corrosion of instrument parts and ensuring accurate and long-term stable pressure monitoring. It is widely used in pressure monitoring of corrosive medium transportation, reaction, distillation and other working conditions.

1. Strength of AIX Boiler Export-Oriented Glass-Lined Pressure Gauge – Original Factory

AIX BOILER is a modern original factory specializing in R&D, production and export of boiler-matched anti-corrosion instruments, pipes and tower sections. With standardized glass-lined workshops, precision instrument assembly lines, glass-lined testing laboratories and professional R&D teams, we have over ten years of experience in glass-lined pressure gauges. Our products have passed international certifications such as CE, ISO, FDA and SGS, adapting to different boiler conditions and medium corrosion grades worldwide. We support multi-language dial markings and manual customization, exporting to more than 50 countries and regions including Southeast Asia, Middle East, Africa, Europe and South America.

As an export-oriented original factory, we have no middleman markup. The substrate adopts high-quality low-carbon steel for boilers, the glaze uses high-purity corrosion-resistant silicon formula, and pressure sensing components are high-precision industrial-grade parts. We strictly implement the whole process: substrate pretreatment, multiple glaze spraying, high-temperature sintering, instrument assembly and full inspection. OEM/ODM customization is available, covering measuring range, accuracy class, connection type (thread/flange), dial size and protection level. We provide one-stop glass-lined pressure gauge solutions for global customers, with cumulative exports of over 10,000 units and unanimous recognition worldwide.

2. Core Technical Parameter Table of AIX Glass-Lined Pressure Gauge

3. Product Structure & Core Advantages

1. Excellent Corrosion Resistance for Harsh Media
The glass-lined layer on wetted parts adopts high-silicon anti-corrosion enamel with strong chemical stability. It resists all inorganic acids, organic acids, salt solutions and organic solvents except hydrofluoric acid, hot concentrated phosphoric acid (≥180℃, ≥60%) and high-concentration strong alkalis. Corrosion resistance is better than ordinary stainless steel pressure gauges, with no medium pollution or metal ion precipitation, meeting GMP standards for food and pharmaceuticals. It solves the short service life of ordinary pressure gauges in corrosive environments.

2. High Accuracy & Stability
Equipped with high-precision industrial Bourdon tubes/capsules, accuracy can reach 0.4 (customizable). The pointer responds sensitively to tiny pressure changes. The glass-lined layer is tightly bonded to the metal substrate without gaps or peeling, ensuring stable readings under high temperature and pressure, unaffected by corrosion or temperature fluctuations.

3. High Temperature & Thermal Shock Resistance
Stable working temperature from -20℃ to 200℃, resisting frequent thermal cycling. The glass-lined layer does not crack or peel, adapting to high-temperature boiler media and outdoor installation in cold regions, far more stable than plastic or ordinary anti-corrosion gauges.

4. Sturdy Structure & Long Service Life
Composite structure of low-carbon steel + glass-lined layer + precision movement provides high mechanical strength, withstanding up to 4.0MPa and external impact. The glass-lined layer has Mohs hardness 6-7, resisting particle erosion. Service life reaches 8–12 years, 2–3 times that of ordinary anti-corrosion gauges.

5. Easy Operation & Flexible Installation
Clear scale with anti-fog glass panel for easy reading. Supports thread and flange connections for flexible installation. The shell is anti-corrosion treated, suitable for indoor and outdoor use with low maintenance.

6. Export Customization & Global Compatibility
Custom ranges and accuracy, compatible with PN6/PN10/PN16 and HG/ANSI/DIN flanges. Multi-language dials and manuals available. Compliant withASTM C768andISO 4626, with complete export documents for smooth customs clearance.

4. Full Export Service System

Professional Customization: Custom solutions based on medium, range, accuracy, installation and connection type.

Complete Certifications: CE, ISO, FDA, SGS, test reports and certificates to meet import regulations.

Strict Inspection: 100% appearance, thickness, corrosion, pressure calibration, air tightness and 20kV spark test before delivery.

Professional Packaging: Shockproof foam + wooden case for safe sea/air/land transportation.

Global After-Sales: 7×24 English support, remote installation guidance, lifetime calibration and spare parts supply.

5. Standards & Certifications

Chinese Standards:GB/T 7989,GB/T 25025-2025,TSG 21

International Standards:ASTM C768,ISO 4626, IEC

Export Certifications: CE, ISO9001, FDA, SGS (customizable)

6. Manufacturing & Quality Compliance

AIX glass-lined pressure gauges adopt standardized lean manufacturing in strict accordance with special equipment and instrument standards. Process: low-carbon steel machining → sandblasting (Sa2.5) → multi-layer glaze spraying → sectional sintering (860-920℃) → stress relief → movement assembly → pressure calibration → full inspection → packaging. Each process is inspected to ensure dense, defect-free glass-lined layer and reliable performance.

7. Applications

Boiler Systems: Coal/Biomass/oil/gas/heat recovery boilers, desulfurization systems

Chemical Industry: Reactors, distillation towers, corrosive pipelines (HCl, H₂SO₄, solvents)

Pharmaceutical Industry: Purification, sterile production (GMP compliant)

Food Industry: Fermentation, beverage, condiment acid pipelines

Environmental Protection: Wastewater & waste gas treatment

Metallurgy: Pickling & acid wastewater systems

8. Installation & Operation Notes

1. Installation: Handle gently; do not strike the glass-lined surface. Use wrench on hex joint only; use PTFE tape for threads and anti-corrosion gaskets for flanges. Install dampers for pulsating pressure.

2. Range: Working pressure within 1/3–2/3 of full scale; double range for pulsating conditions.

3. Medium: Avoid hydrofluoric acid, hot concentrated phosphoric acid and high-temperature strong alkalis.

4. Maintenance: Calibrate every 6 months; clean gently without metal tools; protect against moisture.

5. Operation: No overpressure/overtemperature; stop use immediately for abnormal readings or leakage.

Choose AIX Glass-Lined Pressure Gauge for corrosion resistance, accuracy, stability and durability. Welcome global customers to contact us and visit our factory for professional customization and full quality assurance!