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Modular And Relocatable Porcelain Enamel Tank For Liquid Containment
| MOQ: | 1 Set |
| Price: | Please contact us |
| Standard Packaging: | Angle Iron Frame + Tray + Collision Protection |
| Delivery Period: | 5~60 days |
| Payment Method: | L/C,T/T |
| Supply Capacity: | 20 sets per month |
Relocatable Porcelain Enamel Tank
,Modular Porcelain Enamel Tank
Porcelain Enamel Tank: the inorganic coating that outlives the tank around it
When buyers in North America type "porcelain enamel tank," they are asking for the same fused-glass-to-steel panel the rest of the world calls GFS. Here is what the term means, why the bond beats paint by an order of magnitude, and what to check before you approve a specification.
What a porcelain enamel tank actually is
A porcelain enamel tank is a bolted steel tank whose panels carry a permanent inorganic glass lining on both faces. The panel is cut, blasted and rounded at the edges, dipped or sprayed with a silica-based enamel slip, then fired in a controlled furnace. At furnace temperature the glass melts and wets the steel, forming a chemical and mechanical bond that painting or baking can never reach. The result is a single material that has the load-bearing behaviour of steel and the chemical inertness of glass.
Because the coating is applied and cured in the factory, the panel leaves the line already protected. Site work is bolting and sealing, not spraying and waiting on the weather — which is the root of the lifespan and lifecycle-cost advantage below.
The bond science: why it is not "paint"
Inorganic, so it does not age
Paint is an organic film. It oxidises, chalks and peels on a clock. A fused glass layer is inert: it has no polymer to break down, so documented bolted glass-fused tanks are still in service after 60-plus years. The coating does not need a recoat program.
Bond strength, measured
A fused glass-to-steel bond runs about 3,450 N/cm (≈5,000 psi). A baked or field-applied paint bond is roughly 750 psi — an order of magnitude weaker, and the first place a welded or painted tank loses the war to corrosion.
Edges and bolt holes sealed in the furnace
The failure points on any coated tank are the sheet edges and the bolt holes. We round those edges and apply the glass edge coat in the same furnace run as the face, so the most exposed steel is the best protected — not a site paint touch-up that fails first.
Smooth, inert, cleanable
The fired surface is non-porous and glass-smooth, which suppresses biofilm and algae and makes washdown quick. For potable and food-grade duty that hygiene is the reason specifiers reach for enamel over epoxy.
The myth: "isn't enamel fragile like a sink?"
It is a fair question, and the honest answer separates a real supplier from a brochure. A tank panel is a thick low-carbon steel plate with glass fused into its surface — not a millimetre of enamel over brittle cast iron. The 5,000 psi bond means it will not flake like paint. That said, a hard direct impact can chip the glass, as it would any glass surface, and on-site touch-up enamel is available for those rare cases.
Two media boundaries are worth stating up front so your RFQ is correct: fused enamel is excellent across a wide pH range but is not resistant to hydrofluoric acid, and in very high-chloride service (tens of thousands of mg/L Cl⁻) the coating choice should be confirmed with the panel maker. A supplier who hides those edges is the one to worry about — we would rather lose a wrong-spec inquiry than a tank in the field.
Porcelain enamel vs the alternatives
Standards and quality system
Porcelain enamel tanks for water and effluent are governed by a small set of engineering codes. We design, manufacture and inspect under:
- ISO 9001 — the quality management system under which every tank is designed, made and inspected.
- NSF/ANSI 61 — confirms the coating does not leach contaminants into potable water (potable-duty panels).
- AWWA D103 — the U.S. standard for factory-coated bolted steel water-storage tanks.
- EN ISO 28765 — the international design standard for vitreous- and porcelain-enamelled bolted tanks.
Specification at a glance
Where porcelain enamel tanks are specified
Inert, taste-free storage that meets NSF/ANSI 61 for drinking duty.
Equalisation, clarifiers and landfill leachate where pH and abrasion attack painted steel.
Biogas digesters and secondary digesters; gas-tight, H₂S-resistant, abrasion-proof.
Manure, silage effluent and liquid fertiliser at farm scale.
A fixed-volume reserve erected in days, almost maintenance-free.
Process water, cooling water and aggressive chemical streams within the pH envelope.
Frequently asked questions
1Is a porcelain enamel tank the same as a glass-fused-to-steel tank?
Yes. In storage-tank engineering, "porcelain enamel" is the North American and ASTM term for the same material that Europe and most exporters call vitreous enamel or glass-fused-to-steel (GFS). The enamel is a ground glass frit fired onto steel at 820–930°C so it bonds at the molecular level. Different names, one product family.
2Doesn't porcelain enamel chip like a bathtub or a kitchen sink?
A tank panel is not a thin enamel coat over cast iron. The glass is fused into a low-carbon steel substrate, so the bond measures around 3,450 N/cm (≈5,000 psi) versus roughly 750 psi for baked or field paint. Edges and bolt holes are rounded and enamel-coated in the same furnace run, sealing the points that fail first on painted tanks. It will not flake like paint, though a hard direct impact can chip it — the same is true of any glass surface, and on-site touch-up enamel is available.
3How long does a porcelain enamel tank actually stay in service?
Documented bolted glass-fused (porcelain enamel) tanks remain in service after 60-plus years because the coating is inorganic and does not age, chalk or peel. For a new specification the design life is normally stated above 30 years; concrete and field-painted welded tanks are recoated every 8–20 years, which is where the lifecycle cost gap opens up.
4Can a porcelain enamel tank hold drinking water?
The inert glass surface does not leach metallic ions or impart taste, and panels for potable duty are tested to NSF/ANSI 61. Confirm the current certificate against the project's latest test report before specifying, because NSF/ANSI 61 applies to the coating formulation and the panel lot, not to the tank name alone.
5Porcelain enamel or epoxy — which coating should I specify?
Choose porcelain enamel where coating life and hygiene dominate: potable water, aggressive wastewater, high-H₂S headspace, abrasive slurry. Choose factory-baked epoxy where the budget is tight and 15–25 years is enough. Field-applied epoxy on welded tanks is the fallback when the tank cannot be factory-coated at all. The coating, not the steel, decides the service life.
6What foundation and site conditions does a porcelain enamel tank need?
A reinforced concrete ring beam or slab, levelled to about ±3 mm around the circumference so the first course seats without racking. Above the foundation the build is mechanical — panels, EPDM gaskets and self-locking bolts — so it goes up in most weather without cranes or welding permits. Plan the slab early; everything above it is bolted.
Specify the coating that outlasts the project
Send us your medium, volume and site constraints. We return a panel schedule, a foundation load and a fixed quote — with the holiday-test record per panel.
Certification status (ISO 9001, NSF/ANSI 61, AWWA D103, EN ISO 28765) and the panel parameters above reflect common industry-compliant values. Confirm against Sichuan Mondes Green Technology Co., Ltd.'s current test reports and certificates before publishing or tendering. Internal links point to mondestank.com hub pages: GFS tank, enamel bolted tank, glass lined steel tank, glass fused bolted steel tank, double membrane gas holder.
