When considering the type of material to construct your above ground storage tank with, it is important to consider the various factors that will impact your decision.

With competitive price and timely delivery, zhaoyang sincerely hope to be your supplier and partner.

Durability and Longevity of Concrete vs. Glass Fused Steel Tanks

One main complaint of concrete tanks is cracking, leaking, and the resulting maintenance and costs required to correct these problems.

Concrete is not flexible, and is subject to expansion and contraction – caused by changing temperatures or seismic activity – which overtime causes cracks and leaking. Cracks in concrete tanks can be repaired, but in some instances an expensive plastic liner is required. An untreated crack in concrete can lead to the growth of bacteria on the porous concrete which can compromise the sanitation of your tank.

The most significant advantage for choosing a Glass Fused Steel Tank over a concrete tank is the durability. Steel will flex but not crack like concrete tanks often will. A properly maintained above ground steel panel tank can last well over 100 years, whereas a concrete tank is estimated to have a maximum lifespan of 50 years.

Cost of Concrete Tanks

Historically, concrete tanks have been an inexpensive alternative to Glass Fused Steel Tanks with lower initial investment cost. However, it is critical to think beyond the initial investment cost and consider the cost over the life cycle of the tank.

Then, there is the cost of the water that is lost, since concrete tanks are allowed and expected to leak. Treated, sanitised water is expensive and can adversely affect the surroundings of the tank through erosion and the killing of micro-organisms in the environment.

The associated maintenance expenses, as well as the potential loss in revenue and usage from having your tank out of service, will add up. Since Glass Fused Steel Tanks have a longer life cycle, the overall cost spread across the life of the tank makes a Glass Fused Steel Tank the most attractive option, and is typically less expensive when compared to a concrete tank.

Safety and Environmental Impact

Safety is the most important factor to consider with your tank. If your industry requires you to have confidence in the sanitation level of the liquid in your tank, then steel is the way to go.

Due to the porous conditions of concrete and its inevitable cracking, there is the potential for mould and bacterial growth, and the leaching of calcium found in the concrete.

Flexibility and Customisation

Glass Fused Steel Tanks are custom designed to meet your specific needs. This allows you the ability to choose the exact dimension, style of roof and floor, and ability to add inlets, outlets, manways, roof hatches, and vents. If your needs for the tank change, it is easy to adapt and change components of the tank.

Making these adjustments in a concrete tank is difficult and very costly. A poured in place concrete tank is impossible to move. On the contrary, due to the flexibility of a Glass Fused Steel Tank, relocating the tank can be easily performed.

GFS Tanks with FRP Roof

Build the Right Tank

Wansheng strongly believes in building Glass Fused Steel Tanks. Deciding to build your tank out of steel will be a decision you will not regret. Wansheng offers a range of bolted steel panel tanks from our Glass Fused to Steel coatings to our fusion bonded epoxy coatings.

Keep in touch

We’d love to keep you updated of the projects we’re working on and new developments to the products and services we provide. Contact us for more information.

Glass Fused To Steel Bolted Storage Tanks  – Never Need Painting

Glass-fused-to-steel (porcelain enamel) is a single source strong, integrated porcelain enamel and steel material fused together at over ° F, creating a hard inert, inorganic coating that NEVER needs painting.  CST’s glass-fused-to-steel is the premium technology in the tank market.  The interior of all glass-fused-to-steel tanks feature VITRIUM™ coating technology enhanced with titanium dioxide (Ti02) for the toughest glass available. 

CST’s VITRIUM coating is the world’s leading glass-fused-to-steel process for bolted storage tanks and has been field proven for more than 69 years.  Along with VITRIUM coating, CST now offers EDGECOAT® II, the continuous innovative EDGECOAT technology and the ONLY process in the world that provides optimum glass encapsulation on all (4) sides of the sheet edges.  VITRIUM coating features and benefits include:

• Tough Ti02 glass formulations provides longer life
• White interior is easier to inspect than darker coatings
• Factory certified holiday-free sheets
• Designed for use in both cold and hot climates
• Designed, fabricated, shipped and supported within the USA

EDGECOAT II is a result of CST’s commitment to an ongoing product development and improvement program.  This continuous innovative EDGECOAT technology is the ONLY process in the world that provides optimum glass encapsulation on all (4) four sides of the sheet edges.  CST took the best EDGECOAT technology in the world and made it better with EDGECOAT II.

Following Porcelain Enameling Institute guidelines (PEI-101), EDGECOAT II sheets are mechanically rounded to specific radii that provides maximum glass adhesion to steel.  The combination delivers the maximum corrosion resistance of VITRIUM glass coating with the greatest protection on every sheet.

Are you interested in learning more about Glass-Fused-to-Steel Tank? Contact us today to secure an expert consultation!

• Highest quality finish
• Glass is applied on all (4) sides of the sheet offering the greatest protection
• No sharp edges on tank sheets, eliminating safety hazards
• Edges are engineered to ensure optimum radii for each individual gauge of steel providing the maximum and consistent glass edge
• 5 mils of glass encapsulation on every sheet edge

Download Edgecoat II Technical Data Sheet

VITRIUM is our proprietary titanium Dioxide (TiO2) glassing process applied in a 3-coat, 1-fire (3c1f) process procedure. VITRIUM coating is also produced in a 3-coat, 2-fire (3c2f) process primarily when special colors are requested or thicker layers of glass are required.

The CST proprietary VITRIUM glass-fused-to-steel process provides:

• Longer tank life
• Base coat of glass frit containing nickel oxide ensures consistent quality
• Maximum coating effectiveness without requiring excess coating thickness in order to provide the needed durability at competitive pricing
• Unique process technologies and voltage testing on all interior side wall sheets provide a factory certified 100% holiday free surface.

The combination of glass quality and glass thickness provide the assurance that over 69 years of experience and over 100,000 structures successfully installed around the world will continue with each and every new structure installed.

Titanium Dioxide (TiO2)

In CST, formerly Engineered Storage Products, launched an R&D project to develop a process for the direct application of our proprietary Titanium Dioxide (TiO2) Glass.  The result is a totally new, patented “3-coat, 1-fire” (3c1f) process for applying TiO2 Glass.

TiO2 is a very common ingredient used by many coating manufacturers for various reasons:

• • It is considered inert and at high level in porcelain enamel, gives unique properties.
  • In the case of the interior VITRIUM coating, with its higher percentage of TiO2 in the final white layer, allows CST to provide an exceptional enamel surface.
  • During firing, the white layer’s higher viscosity has the effect of controlling bubble structure in addition to making the top TiO2 rich layer harder, more chemical resistant and the bubble structure finer.  This high TiO2 content is unique to AQUASTORE® and provides exceptional properties to fit colder conditions common to the North American market.

As a result of using higher amounts of TiO2 in the final white layer, a unique visual marker on the glass known as “VITRIUM threading” becomes apparent.  This is caused by thicker areas of the top white layer interspersed with thinner areas allowing the underlying bluecoat to show through opaquely.  This immediately identifies the coating as VITRIUM.

Manufacturing Excellence

CST’s DeKalb facility is ISO : quality system certified.  Engineers design tanks for a wide range of standards including AWWA D103 Standard for Bolted Steel Water Storage Tanks, AISC, FM codes and NFPA Standard 22.  Additionally, glass coatings meet ANSI/NSF Standard 61 requirements for indirect additives, making AQUASTORE®, HARVESTORE® and SLURRYSTORE® tanks ideal for liquid, feed, manure storage and digesters processes.  Most importantly, extreme pride is taken in craftsmanship for a tank that endures the test of time.

From the automated manufacturing processes through the stage-by-stage inspection and even down to careful inspection of the glass. Our glass-fused-to-steel quality is the best in the industry.  The best proof of the precision of CST’s manufacturing procedures can be seen in the thousands of tank installations around the world.

Glass-Fused-To-Steel Process

Glass-fused-to-steel is the premium technology in the tank market.  The factory-applied silica glass coating on AQUASTORE, HARVESTORE, SLURRYSTORE and NUTRISTORE tanks forms a hard, inert barrier for both the interior and exterior tank surfaces to guard against weather and corrosion.  Glass-fused-to-steel is impermeable to liquids and vapors, controls undercutting caused by corrosion and offers excellent impact and abrasion resistance.  The color won’t fade or chalk and most graffiti can easily be removed.  It NEVER needs painting!

• • Fabricated sheets are grit blasted to a uniform, near-white surface
  • Proprietary formulations of borosilicate, minerals, water and clays are blended into a sprayable slurry called “slip”
  • After inspection, the slurry is fused to the steel sheets at temperatures above 1,500° F to produce the distinctive glossy Aquastore finish
  • The molten glass reacts with the profiled steel surface to form an inert, inorganic chemical and mechanical bond

VITRIUM Coating Glass Finish

New process technology has resulted in the development of CST’s newest glass innovation – VITRIUM coating.  This coating combines the outstanding chemical and physical resistant properties of Titanium Dioxide (TiO2) saturated glass with a highly engineered ultra-fine glass structure surface to create a high-performance glass-fused-to-steel technology.  VITRIUM coating features and benefits include:

• Tough TiO2 glass formulations provide longer life
• Electrostatic base coat application ensures consistent quality
• Maximum coating effectiveness without requiring increased coating thickness
• Unique process technologies provide factory certified “holiday free” sheets
• Process efficiencies lead to competitive pricing
• Ideal for both cold and hot climates

Color Options

AQUASTORE glass coatings are available in standard cobalt blue or four other premium exterior colors.  Forest green, sky blue, desert tan or white premium colors are available at an additional cost. Inquire for custom colors.

History of Glass-Fused-To-Steel

CST (formerly A.O. Smith) first discovered the methodology of controlling corrosion by fusing glass to steel in the s.  The technology was initially used in the brewing and hot water heater industries.  While other uses for glass-fused-to-steel were explored, the first glass-fused-to-steel tank went into service in as a HARVESTORE silo.  This agricultural use to store feed while retaining quality has been widely used for almost 69 years.

In the s, our Municipal and Industrial Division was formed and we subsequently launched AQUASTORE tanks for water, wastewater and other industrial liquid uses.  Since , more than 100,000 AQUASTORE, HARVESTORE, SLURRYSTORE and NUSTRISTORE glass-fused-to-steel tanks have been installed in over 70 countries around the world.