A buried rainwater storage tank for large industrial roofs — sealed against light and insects, with no ground area given up.
Indicative — the quotation confirms the final figure US$3,600 Lead time 15 – 25 days · ex Dezhou, Shandong
SKU LVJ-BDF-RWS
What buyers said once the tank was on site — every review left on our Alibaba store, in their own words.
The BDF rainwater storage tank from LVJIA is a bolted, buried storage tank pressed from bimetallic composite plate at our own plant in Dezhou, Shandong. A large industrial roof sheds a great deal of water every time it rains, and most sites send all of it to the drain.
A BDF rainwater storage tank is a sectional tank assembled below ground from 1000 × 1000 mm pressed panels. Each panel is drawn in a single press stroke from a composite plate: a food-grade stainless layer on the face that meets the water, hot-dip galvanised steel behind it to carry the load. The panels bolt together inside the excavation, so no welding happens on site and no welded seam is ever in contact with the stored water. LVJIA builds this tank from 1 to 1,000+ m³, which means the volume follows the pit you have dug rather than a fixed catalogue size.
Storage is built to order from 1 to 1,000+ m³ on a 1 m module, so the volume follows your roof area, your rainfall pattern and how long you want to ride through a dry spell — not a catalogue size. Send the roof area with the enquiry and the arrangement drawing comes back with the panel schedule. Harvested water then sits for weeks between uses, which is when an open or translucent store goes green; this one is sealed and buried, with no light path, a gasketed and vented manhole and a stainless wetted face that sheds nothing into the water.
Three things separate this BDF rainwater storage tank from a coated steel tank. First, there is no coating: the corrosion-resistant surface is the stainless face of the panel itself, so there is nothing to blister, peel or repaint. Second, the panel is drawn rather than fabricated, so the water never touches a heat-affected zone where pitting normally starts. Third, every joint is closed with EPDM strip and stainless fasteners outside the water path, which means a single panel can be replaced years later without cutting the tank open. The module is reinforced on all four corners, and the wall is carried on a 16 mm section rated for a full 4.5 m of head.
| Model number | Buried water tank |
|---|---|
| Capacity | 1 – 1,000+ m³ built to order |
| Material | New stainless steel composite plate (BDF) |
| Application | Rainwater harvesting, process and wash-down |
| Inlet | Filtered, first-flush diverter |
| Overflow | DN150 to storm drain |
| Panel module | 1000 × 1000 mm, pressed and drawn |
| Panel thickness | 2 – 5 mm by height |
| Wall thickness | 16 mm |
| Light path | None — sealed and buried |
| Certification | ISO 9001 · CE |
| Origin | Dezhou City, Shandong Province, China |
Industrial harvesting volumes tend to be large and shallow so they fit under a yard: 12 × 6 × 2.5 m, 15 × 8 × 3 m, 20 × 10 × 3 m and 25 × 10 × 4 m are typical. Where more than 800 m³ is needed, two shells are laid side by side and linked.
| Tank height | Panel thickness | Typical use |
|---|---|---|
| 1.0 – 1.5 m | 2 mm | Shallow buried reserve |
| 2.0 m | 3 mm | Standard buried tank |
| 3.0 m | 4 mm | Deep reserve, high head |
| 4.0 – 4.5 m | 5 mm | Maximum depth, pump station |
Every BDF rainwater storage tank is filled and held at full head for 48 hours before it leaves the factory, and no joint is allowed to weep. The composite plate carries drinking-water contact report SP2630499 from the Dezhou Institute of Product Quality Standards and Metrology, and the plant holds ISO 9001 with CE marking on the product. Copies of the report and the certificate ship with the order, and you can see the full set on our certifications page. The same specification is published on our Made-in-China storefront, where LVJIA is an audited supplier.
Pricing for the BDF rainwater storage tank starts at US$200 per cubic metre, falling to US$180 from 10 m³ and US$150 from 50 m³, FOB Tianjin or Qingdao. The minimum order is one set. Samples ship in 3 to 5 days and batch orders in 15 to 25 days from Dezhou, Shandong, on wooden pallets. Harvested roof water needs disinfection before potable use; the tank itself is food-grade and carries contact report SP2630499.
Send the pit dimensions and the volume you need and LVJIA returns an arrangement drawing and a panel schedule before you commit to anything. If you would rather talk it through first, our engineers answer specification questions directly through technical help, and the rest of the range sits on the BDF underground water tank page.
Same job, different material: the galvanized rainwater tank is the same tank in hot-dip galvanized steel, for sites where a heavier steel wall suits the head, while the stainless steel rainwater tank builds it in stainless steel. Elsewhere in the BDF underground range there is the BDF composite water tank for general-purpose duty and the BDF landscape water tank for general-purpose duty.
At a glance
Every tank is built to the pit you have. The module is a 1000 × 1000 mm pressed panel, so capacity steps in whole cubic metres and the arrangement can be long and shallow or short and deep without changing the parts list.
Panel thickness by tank height — BDF Underground Rainwater Storage Tank
| Tank height | Panel thickness | Typical use |
|---|---|---|
| 1.0 – 1.5 m | 2 mm | Shallow buried reserve |
| 2.0 m | 3 mm | Standard buried tank |
| 3.0 m | 4 mm | Deep reserve, high head |
| 4.0 – 4.5 m | 5 mm | Maximum depth, pump station |
Shandong Lvjia has pressed water-tank panels in Dezhou since the plant opened, and holds ISO 9001 with import and export rights of its own.
Request a quoteThe panel is a bimetallic composite: a food-grade stainless layer bonded to hot-dip galvanised steel, then pressed and drawn in a single stroke. The stainless face carries the water; the galvanised layer carries the load.
Product dimensions
Tolerance requirements
Every tank is filled and held at full head before it leaves Dezhou, and the composite plate carries a drinking-water contact report from the Dezhou Institute of Product Quality Standards and Metrology.
Typical performance — BDF Underground Rainwater Storage Tank
| Test | Method | Result |
|---|---|---|
| Hydrostatic | 48 h at full head | No weep at any joint |
| Drinking-water contact | Report SP2630499 | Pass |
| Shock resistance | Four-corner reinforced module | Pass |
Send the pit dimensions and the volume you need and LVJIA returns an arrangement drawing with the panel schedule before you order.
Talk to an engineerHow every tank is specified, built to your drawing, inspected and documented before it leaves the line.
We’ll help you meet your specification.
Send us a drawing or a capacity and we will come back with a specification, a price and a build slot.
Get in touchTanks our customers pair with this one. Hover or tap a card for its specification.
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Hỏi về sản phẩm này
Tell us the capacity and the space you have. An engineer replies with a drawing and a firm price.
Trao đổi với kinh doanh và kỹ thuật
Straight to the engineers who press the panels. First reply usually under two hours on a working day.
Shandong Lvjia Air Conditioning Equipment Co., Ltd. · Dezhou, China
