Epoxy resin steel pipe is a performance stable composite pipe that combines the strength of metal substrate and the corrosion resistance of epoxy coating. It is specially designed for fluid transportation in harsh environments. With its effective performance, stable product quality, and long service life, it has become the core choice for fluid transportation pipelines in municipal, industrial, energy and other industries, providing indestructible protection for pipeline engineering and helping the project run smoothly.
Product Core
This product is based on steel pipes and coated with stable epoxy resin (FBE) on its inner and outer walls through a fusion process, achieving a dual effect of "steel strength and toughness+stable epoxy performance". It thoroughly solves the industry pain points of traditional steel pipes, such as easy corrosion, short service life, and high maintenance costs.
Careful protection: The epoxy coating is dense and continuous, with strong chemical inertness, which can effectively block water vapor, oxygen, electrolytes, and corrosive media from contacting the steel substrate. At the same time, it forms strong adhesion through chemical bonding (usually ≥ 10MPa), and has excellent resistance to cathodic peeling. Even if the coating is slightly damaged, it can effectively prevent corrosion from spreading. Its salt spray resistance can reach 4500-5000 hours, and it can withstand complex media environments with pH 1-13, resisting corrosion and erosion in all directions.
Excellent mechanical performance: retaining the relative strength, relative strength, and pressure bearing capacity of the steel pipe itself, with a tensile strength of ≥ 520MPa and an impact energy of ≥ 50J (-20 ℃), it can meet the requirements of different pressure scenarios such as conventional water supply, high-pressure firefighting, and mining emulsions. The pressure bearing range covers 1.6-40MPa, and it also has the ability to resist impact, scratch, and settlement, suitable for installation in complex terrains.
Energy saving and environmentally friendly: The epoxy coating on the inner wall is smooth and flat, with low roughness and low friction coefficient (0.001-0.0025), which can significantly reduce water flow resistance and improve transportation efficiency. The energy-saving effect reaches 30-55%, and the inner wall is not easy to scale, avoiding secondary fluid pollution; Adopting solvent-free and environmentally friendly epoxy powder, with zero heavy metal precipitation, it meets hygiene standards such as GB/T 17219 and NSF/ANSI 61, and can be safely used for the transportation of drinking water, with green pollution.
Low consumption and practicality: The epoxy resin steel pipe produced by rigorous technology has a service life of over 50 years, without frequent maintenance and replacement, greatly reducing pipeline operation and maintenance costs. Compared with traditional galvanized pipes and ordinary pipes, it has a significant cost-effectiveness and can achieve long-term energy conservation and consumption reduction for engineering.
Detailed production process
The product quality comes from strict control. Each epoxy resin steel pipe undergoes multiple processes of polishing, and the entire process follows the standard production process to confirm stable performance and uniform quality.
Strict surface treatment: Each steel pipe is subjected to shot blasting/sandblasting treatment to thoroughly remove rust, oxide scale, and oil stains, achieving a near white level (Sa 2.5) standard, while forming a uniform anchor scale (50-100 μ m), laying a solid foundation for the coating to adhere firmly.
Fine preheating and solidification: Using medium frequency induction heating technology, the tube body is uniformly heated to the epoxy powder melting temperature of 180-250 ℃ to confirm that the coating is fully melted; After spraying, it enters the curing furnace to fully crosslink and cure the epoxy resin, forming a dense and stable protective coating.
Quality inspection in all aspects: After production is completed, each pipe is subjected to 90% electric spark leak detection (detecting pinholes), adhesion testing (grid cutting or pulling method), coating thickness testing (conventional 250-500 μ m, can be customized according to needs), appearance inspection, and cathodic peeling test. The entire process is strictly controlled, and qualified products are rejected from the factory to confirm that every meter of pipe meets industry standards.
Coating system and customized services
Relying on technology, we can provide diversified coating system customization according to different application scenarios, suitable for complex working conditions: single-layer FBE coating (300-500 μ m), suitable for conventional scenarios such as buried and indoor overhead; Double layer FBE coating (bottom layer 300 μ m+surface layer 300 μ m), with strong (based on actual reports) and impact resistance, suitable for harsh environments such as deserts and rock backfill areas; Internal FBE+external 3PE composite coating (total thickness ≥ 2.5mm), with both internal and external considerations and mechanical protection, suitable for high salt, high chloride ion soils and marine environments.
Simultaneously supporting customization of pipe diameter, wall thickness, coating thickness, and outer wall color (blue, red, black, etc.), UV anti violet agents or graphene modification can be added to further enhance coating performance; Provide flange, groove, welding and other connection methods to meet the installation needs of different projects, and fit the actual application scenarios of customers in all aspects.
Application Industry
With its comprehensive performance, epoxy resin steel pipes have been applied in important projects, covering multiple core industries: municipal engineering (water supply and drainage, sewage treatment, gas transmission pipeline network); Petrochemical industry (oilfield wastewater, chemical waste liquid, oil and gas long-distance pipelines); Water conservancy and power (agricultural irrigation, power plant circulating water, power line protection); Marine engineering (seawater desalination, offshore platform pipelines); Mining engineering (mining emulsion, mine water supply and drainage); Fire engineering (high-pressure fire pipelines) has become the core pipe material in modern infrastructure projects.