For industrial facilities managing aggressive media—from concentrated sulfuric acid to organic process chemicals—the choice of containment material is critical to both safety and operational life. As China’s premier chemical storage tank manufacturer, we provide high-performance Welded Carbon Steel and Stainless Steel tanks, engineered to meet the world’s most rigorous industrial standards.
With decades of fabrication expertise and a global supply chain, we help project managers navigate the complexities of material selection, ensuring 100% leak-proof reliability for the chemical, mining, and energy sectors.
Tank Technology | Ideal Applications | Corrosion Resistance | Structural Benefit |
Stainless Steel (316L/304) | Organic acids, Nitric acid, High-purity chemicals | High: Passive oxide layer prevents pitting. | Excellent ductility and seismic resistance. |
Welded Carbon Steel (Lined) | Bulk sulfuric acid (98%+), Hydrocarbons, Alkalis | Media-Dependent: Relies on specialized internal linings. | Highest structural integrity for mega-scale storage. |
Duplex Stainless Steel | High-chloride environments, Desalination chemicals | Maximum: Superior resistance to stress corrosion. | Higher yield strength allows for thinner, lighter walls. |
For facilities requiring high-purity chemical storage or resistance to oxidizing acids, our stainless steel solutions are the industry benchmark.
● Advanced Material Grades: We specialize in SS304, SS316L, and SS317L. For highly aggressive saline or chloride environments, we offer Duplex Stainless Steel (2205/2507), which provides double the strength of standard austenitic grades.
● Surface Passivation: Every tank undergoes a rigorous chemical passivation process. This strengthens the natural chromium-oxide layer, ensuring the tank remains immune to localized pitting and crevice corrosion.
● Hygienic Engineering: The non-porous nature of stainless steel makes it ideal for chemicals where cross-contamination must be zero. It is the preferred choice for the pharmaceutical and food-grade chemical sectors.
For large-scale industrial storage, especially of high-concentration sulfuric acid ($H_2SO_4$ 98%+) or alkaline solutions, welded carbon steel provides a robust and cost-effective solution.
● Heavy-Duty Fabrication: Our tanks are manufactured using high-grade carbon steel, utilizing automated submerged arc welding (SAW) to ensure 100% penetration and uniform seam strength.
● Specialty Internal Linings: To handle specific acidic profiles, we apply advanced industrial linings, including:
○ Phenolic Epoxy: For solvent and mild acid resistance.
○ Rubber Lining (Ebonite/Soft Rubber): The premier choice for Hydrochloric Acid (HCl) and phosphoric acid.
○ PTFE/PFA Sheet Lining: For high-temperature, ultra-aggressive chemical streams.
● Scalability: Welded construction is the only viable option for "Mega-Tanks" exceeding 50,000 barrels in capacity, providing a rigid, permanent structure for bulk chemical terminals.
As China’s leading manufacturer, our production is audited against the world’s most stringent safety protocols:
● International Standards: Our engineering team designs in strict accordance with API 650, API 620, ASME Section VIII, and ISO 9001.
● Quality Assurance (NDT): We employ comprehensive Non-Destructive Testing, including X-ray Radiography (RT), Ultrasonic Testing (UT), and Magnetic Particle Inspection (MT) to guarantee every weld is flawless.
● Smart Manufacturing Base: Our 150,000 $m^2$ facility utilizes automated CNC laser cutting and welding robots, ensuring that every component is precision-engineered for rapid on-site assembly.
Q: When should I choose Stainless Steel over Lined Carbon Steel?
A: Stainless steel is generally preferred for "clean" chemicals, organic acids, or where the liquid temperature exceeds the limits of rubber or epoxy linings. Lined carbon steel is more cost-effective for bulk storage of concentrated inorganic acids.
Q: How do you ensure the safety of acid tanks in seismic zones?
A: We utilize advanced Finite Element Analysis (FEA) to simulate wind, snow, and seismic loads. Our welded tanks feature reinforced foundations and thickened bottom plates to ensure stability during environmental events.
Q: What is the maintenance cycle for a lined welded steel tank?
A: With modern high-performance linings, internal inspections are typically recommended every 5–10 years. Stainless steel tanks require significantly less maintenance, often only needing exterior cleaning and periodic passivation checks.
