Glass-Lined Piping & Fittings

Glass-Lined Piping & Fittings (Glass Lined Pipe, Glass Lined Fittings)

Glass-Lined Equipment Customization

ASTM-Standard Steel Materials Carbon steel, alloy steel, stainless steel
Enhanced Enamel Formulations Superior resistance to corrosion, high temperature, acids and alkalis
Precision-Controlled Manufacturing Cold spray with curve firing for uniform enamel thickness and density

(Glass Lined Pipe, Glass Lined Fittings)

Our glass-lined piping and fittings are available in sizes from DN25 to DN600, engineered for the safe transfer of corrosive, contamination-sensitive, and high-purity fluids. Constructed from premium metallic substrates (such as ASTM A106 Gr.B carbon steel or stainless steel) with a high-silica glass lining fused at high temperature, they deliver exceptional corrosion resistance, wear resistance, anti-adhesion, insulation, and anti-static performance. Fully compliant with ASME B31.3 and PED 2014/68/EU standards, they are ideal for chemical, pharmaceutical, food, and agrochemical fluid transfer systems.

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Features

Complete range of piping components
Glass-Lined Piping, also known as enameled piping, includes straight pipes, elbows (30°, 45°, 60°, 90°, 180°), tees, crosses, reducers, spacers, and blind flanges.
Flexible connection methods
The pipe ends are available in nozzle-end and flange-end structures. Pipes with a nozzle-end structure are used together with lap joint flanges, while pipes with a flange-end structure can be connected directly to other piping or equipment.
Convenient installation design
The nozzle-end structure can be combined with an integral lap joint flange, making installation more convenient.

Manufacturing Process

Base material preparation
Materials such as No. 10 or No. 20 seamless steel pipe are selected as the substrate. The base material must have uniform thickness, a smooth surface, and no cracks.
Pretreatment
The substrate undergoes pre-firing and sandblasting treatment to improve the bonding strength between the enamel glaze and the metal substrate.
Enamel application
The enamel glaze is evenly applied to the inner wall of the steel pipe by methods such as rolling or spraying.
Firing process
The coated pipe is fired in a high-temperature kiln so that the enamel glaze bonds tightly to the metal substrate.
Inspection and testing
The finished products undergo visual inspection, thickness measurement, and corrosion resistance testing to ensure compliance with standards such as GB25025 technical specifications for glass-lined equipment.

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Please contact Lante for custom glass-lined steel equipment designed to meet your specific needs.

Why Us

Certified manufacturing standards
We hold authoritative ASME (Section VIII Division 1) and CE (PED) certifications, ensuring full compliance with international safety and quality standards. This guarantees our glass-lined steel equipment meets the strict regulatory requirements of global chemical, pharmaceutical, and agrochemical clients.
In-House Enamel R&D Laboratory
Our dedicated in-house R&D center specializes in custom enamel formulations, including acid-resistant, acid-alkali resistant, high-temperature resistant, and wear resistant options. These proprietary formulas deliver exceptional durability against corrosive media, mechanical impact, and thermal shock, ensuring reliable performance in diverse operating environments.
Advanced Cold Spray Enameling Process
Our glass-lined equipment utilizes advanced cold spray enameling process with multiple high-temperature firing cycles. This technology ensures a thinner, more uniform, and denser enamel layer with significantly reduced risk of chipping or peeling. The controlled firing process guarantees optimal adhesion and long-term durability in the most demanding chemical processing conditions.

Precision Belt Polishing Pretreatment
Prior to enameling, every steel shell undergoes rigorous precision belt polishing to thoroughly remove mill scale, pits, and surface impurities. This meticulous pretreatment process ensures superior substrate smoothness and integrity, providing an ideal, contamination-free foundation for strong and uniform enamel bonding.
Multi-zone electric furnace control
The enameling furnace uses independent multi-zone control with computerized management of heating, holding, and cooling. The temperature difference inside the furnace is controlled within 5°C, helping maintain consistent firing quality.
Vertical firing process
All equipment is produced using a vertical firing process, which provides more even heating, reduces deformation, and helps maintain the overall appearance of the equipment as well as flange flatness.
Controlled slow firing curve
The firing process follows a low-temperature entry and low-temperature exit slow-firing curve. Combined with dedicated furnace tooling and controlled firing methods, this helps ensure enamel quality comparable to that of established international manufacturers.
Full-process quality management
We maintain a complete quality management system with full-process control. For glass-lined quality inspection, we apply three inspection procedures covering:
1. internal and external visible defects
2. enamel thickness
3. high-voltage spark testing
This helps ensure that delivered products meet required standards and specifications.
Custom non-standard equipment design and manufacturing
Custom design and manufacturing support is available for non-standard products. Based on different process requirements, tailored solutions can be developed for special equipment structures and agitator selection supported by CFD fluid dynamics simulation.
Strong R&D capability
We have strong research and development capacity and currently hold more than 40 national patents covering equipment tooling, products, and manufacturing processes.