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Home > Industrial Equipment & Components > Environment Protection Device > Waste Treatment Equipment > Underground FRP Sewage Tank 20000L 4.5m Depth With 2mm Inner Surface for Chemical Waste

Underground FRP Sewage Tank 20000L 4.5m Depth With 2mm Inner Surface for Chemical Waste

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Underground FRP Sewage Tank 20000L 4.5m Depth With 2mm Inner Surface for Chemical Waste photo-5

Product Spotlights

Underground FRP sewage tank with 20,000L capacity and 4.5m depth, featuring a 2mm chemical-resistant inner surface for aggressive waste. Lightweight, corrosion-proof, custom nozzles, and long lifespan. Ideal for industrial wastewater, chemical plants, and municipal sewage systems requiring reliable underground storage.

Negotiable MOQ: 300 Square Meters (Price negotiable depending on order volume and customization)

Key Specifications

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Capacity:

20000 Liters

Depth:

4.5 meters

Inner surface thickness:

2 mm

Contact Supplier Request Quote Chat Now

Hengshui Ruibin New Materials LLC

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

Product Details
Company Profile
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Capacity 20000 Liters

Depth 4.5 meters

Inner surface thickness 2 mm

Material Fiberglass Reinforced Plastic (FRP)

Application Chemical waste / sewage storage

Installation Underground (buried)

Color Customizable (e.g., black, green, gray)

Corrosion resistance High (suitable for acidic/alkaline chemicals)

Hengshui Ruibin New Materials LLC, a professional manufacturer established in 2019, proudly presents our Underground FRP Sewage Tank 20000L 4.5m Depth with 2mm Inner Surface for Chemical Waste. With a factory spanning 1,000-3,000 square meters and a dedicated team of 101-200 employees, we produce high-quality fiberglass tanks that meet the rigorous demands of global markets. Our annual export value of US$2.5-5 million reflects our commitment to quality and reliability. This tank is engineered for underground storage of aggressive chemical waste, combining large capacity, deep burial capability, and exceptional corrosion resistance.

Key Features & Technical Specifications

Large Capacity: 20,000 liters (20 m³) handles high-volume chemical or sewage storage.
Deep Burial Design: 4.5-meter depth allows installation in deep underground locations, saving surface space.
2mm Inner Surface: A reinforced corrosion barrier specifically designed for chemical waste, ensuring long service life even with harsh acids, alkalis, and solvents.
Full FRP Construction: Lightweight yet strong, resistant to rust, UV degradation, and soil corrosion. No need for cathodic protection.
Customizable Inlets/Outlets: Multiple nozzle orientations and sizes available upon request to match existing piping.
Optional Accessories: Manhole covers, level indicators, ventilation pipes, and lifting lugs can be integrated.
Compliance: Manufactured in accordance with industry standards for underground chemical storage (e.g., ASTM D3299, ASME RTP-1).

Parameter	Value
Total Capacity	20,000 L (5,283 US gal)
Overall Depth (height)	4.5 m (14.8 ft)
Inner Surface Thickness	2 mm (0.079 in)
Outer Diameter (approx.)	2.6 m (8.5 ft)
Wall Thickness (nominal)	6-8 mm (0.24-0.31 in)
Operating Temperature	-40°C to 80°C (-40°F to 176°F)
Pressure Rating	Atmospheric (vented) – customizable for low pressure
Standard Fittings	2× DN150 inlet, 1× DN100 outlet, 1× vent (customizable)

Product Advantages & Customer Benefits

Our underground FRP tank offers significant advantages over traditional steel or concrete tanks:

Superior Corrosion Resistance: The 2mm inner surface is made of chemical-resistant resin (vinyl ester or isophthalic polyester). This barrier prevents attack from aggressive chemicals such as sulfuric acid, hydrochloric acid, sodium hydroxide, and organic solvents. No lining peeling or rusting over decades.
Lightweight & Easy Installation: FRP is one-third the weight of steel. A 20,000L FRP tank can be handled with a medium crane and installed without heavy equipment, reducing on-site costs and time.
Long Service Life: With proper design and UV protection (if exposed), FRP tanks can last 30+ years underground. The monolithic construction eliminates weld joints that are prone to corrosion.
Low Maintenance: No need for painting, coating, cathodic protection, or frequent inspections. The smooth inner surface reduces sludge buildup and makes cleaning easier.
Customization Flexibility: We can adjust tank diameter, height, nozzle positions, ladder access, and even add internal stiffeners or compartments for dual waste streams.

Why Choose Hengshui Ruibin New Materials LLC?

As a direct manufacturer with a 1,000-3,000 m² factory and over 100 skilled workers, we control every step of production – from raw material selection to final quality testing. Since 2019, we have exported to over 10 countries across North America, Europe, Southeast Asia, and the Middle East, with an annual export value exceeding US$2.5 million. Our tanks are shipped from the Ports of Tianjin and Qingdao, ensuring efficient logistics. Each tank undergoes rigorous hydrostatic and vacuum tests before delivery. We also offer after-sales technical support and installation guidance.

Ready to secure a durable, corrosion-resistant storage solution for your chemical waste? Contact our sales team today for a customized quotation and lead time. We are committed to providing products that match your exact requirements.

Frequently Asked Questions (FAQ)

Q1: What chemicals can this tank store safely?
A: The 2mm inner surface is designed for a wide range of chemical wastes, including diluted acids (e.g., sulfuric, hydrochloric), alkalis (e.g., sodium hydroxide), brines, and some organic solvents. For specific chemical compatibility, please provide your waste composition, and we will recommend the optimal resin system (vinyl ester or isophthalic).
Q2: Can the tank be installed in areas with high groundwater?
A: Yes, the tank is designed to withstand external hydrostatic pressure when properly anchored. We recommend using concrete ballast or strapping systems. Our engineering team can provide a detailed installation guide for your site conditions.
Q3: What is the expected lifespan of this underground FRP tank?
A: With normal chemical exposure and proper installation, the service life often exceeds 30 years. The FRP material does not rust, and the 2mm inner barrier provides extra protection against chemical attack. Regular visual inspections every 5 years are recommended.
Q4: Do you provide custom nozzle configurations?
A: Absolutely. We can supply the tank with any number, size, and orientation of inlet/outlet nozzles, manholes, and vents. Just provide your piping diagram, and we will adapt the design.
Q5: Is certification available for this product?
A: Our tanks are manufactured according to recognized industry standards such as ASTM D3299 and ASME RTP-1. We can provide a certificate of compliance. If you require specific third-party inspection (e.g., Lloyd's, BV), we can arrange it at an additional cost.
Q6: What is the maximum burial depth for this tank?
A: The tank itself is designed for a 4.5 m depth (from top of tank to ground surface). For deeper burial, we may need to increase wall thickness or add stiffeners. Please consult our engineers for depths beyond 4.5 m.
Q7: How is the tank shipped and what is the lead time?
A: The tank is shipped as a one-piece unit via flat rack or open-top container from Tianjin or Qingdao ports. Lead time is typically 25-35 days after order confirmation and design approval. Custom designs may add 10-15 days.
Q8: Can I order a smaller or larger capacity than 20,000L?
A: Yes, we produce a full range of underground FRP tanks from 1,000L to 100,000L. The 20,000L model is one of our standard sizes. Contact us for a quote on your desired volume.