FRP Septic Tank Manufacturer | Fiberglass Tanks

FRP septic tanks are monolithic wastewater treatment units manufactured by filament winding technology, offering exceptional corrosion resistance and structural strength. With leak-proof performance, lightweight design, and smooth internal surfaces that improve treatment efficiency, they provide a durable, easy-to-install, and long-lasting alternative to traditional concrete or metal septic tanks.

FRP Septic Tank Manufacturer for Project & Bulk Supply

Fortis manufactures FRP septic tanks for decentralized wastewater collection and primary treatment in residential developments, hotels, resorts, schools, hospitals, factories, farms, worker camps and remote communities. Our range includes compression-molded SMC units and filament-wound cylindrical tanks, allowing the construction, chamber arrangement, openings and dimensions to be matched to the project. Standard volumes run from 1 to 2.5 m³ in the SMC range and from 20 to 130 m³ in the filament-wound range. As a China FRP septic tank manufacturer, we can match your requirement to an existing model or assess a custom configuration.

Fortis manufactures two FRP septic tank families instead of forcing every project into one construction method. Our compact FT-STT fiberglass septic tanks are compression-molded from SMC under heat and pressure for repeatable shell dimensions and wall thickness. For higher-capacity systems, the cylindrical FT-STF range is produced by computer-controlled filament winding to build circumferential reinforcement and structural stability.

If your project also requires pipes, storage tanks, gratings or other composite components, view our complete FRP product range.

Choose the Construction Around the Project

Tank type	Standard volume	Manufacturing route	Typical fit
SMC molded FRP septic tank	1–2.5 m³	SMC formed under heat and pressure using hydraulic compression molding	Compact decentralized systems, repeat project quantities and fixed model geometry
Filament-wound FRP septic tank	20–130 m³	Computer-controlled glass-fiber winding around a cylindrical shell	Community, commercial and larger-site duties requiring higher volume and project-specific connections

Standard SMC Septic Tank Models

Model	Volume	External dimensions (L × W × H)	Average thickness	Weight
FT-STT1	1 m³	1740 × 1000 × 1000 mm	3.5 mm	58 kg
FT-STT1.5	1.5 m³	1880 × 1015 × 1230 mm	5 mm	95 kg
FT-STT2a	2 m³	2000 × 1270 × 1292 mm	5 mm	100 kg
FT-STT2b	2 m³	2370 × 1162 × 1190 mm	7 mm	138 kg
FT-STT2.5a	2.5 m³	2448.5 × 1268.5 × 1302 mm	7 mm	180 kg
FT-STT2.5b	2.5 m³	2470 × 1280 × 1300 mm	7 mm	180 kg

Each standard SMC model uses two internal partition plates. Cover, gasket and fastening configurations vary by model and are confirmed on the approved drawing.

Filament-Wound Septic Tank Range

The FT-STF series covers 20–130 m³. Representative models are shown below; intermediate capacities are available within the series.

Model	Volume	Diameter	Total length	Shell thickness	Baffles
FT-STF14	20 m³	2300 mm	4850 mm	7 mm	1
FT-STF21	50 m³	2800 mm	8100 mm	7 mm	2
FT-STF30	80 m³	3200 mm	10000 mm	8 mm	2
FT-STF33	100 m³	3500 mm	10400 mm	11 mm	2
FT-STF36	130 m³	3500 mm	13550 mm	13 mm	2

These dimensions are standard references, not a substitute for installation review. Final selection must account for burial depth, groundwater, backfill, surface loading and local requirements.

Applications

Our FRP septic tank range can be configured for:

♦ Residential developments and apartment projects
♦ Hotels, resorts, campsites and holiday facilities
♦ Schools, hospitals and office buildings
♦ Farms and rural sanitation projects
♦ Factories, workshops and worker accommodation
♦ Remote communities without centralized sewer access

Frequently Asked Questions

What is the difference between SMC molded and filament-wound FRP septic tanks?

SMC tanks use compression-molded components and fixed tooling, making them suitable for compact standard models and repeat quantities. Filament-wound tanks use controlled fiber placement around a cylindrical shell and cover a much larger standard capacity range.

Can an FRP septic tank be installed beneath a traffic area?

Only after the burial structure and load condition have been reviewed. Vehicle load, cover depth, groundwater and backfill can change the required shell, foundation or anchoring arrangement. A standard shell thickness should not be treated as a blanket traffic-load rating.

Can Fortis change the inlet, outlet and internal baffles?

Yes. Connection size and position, connection method, baffle arrangement, access covers and selected accessories can be reviewed against the project drawing and manufacturing feasibility.

Can septic tank effluent be discharged or reused directly?

Not by default. A septic tank separates and partially treats wastewater; the required downstream treatment or dispersal method depends on the project and local regulations.

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