Square Concrete Sink Manufacturer for OEM/ODM Bathroom Projects

Square concrete sinks are above-counter vessel basins cast in poured concrete, with a clean geometric, architectural profile that suits modern bathrooms, boutique hotels and apartment fit-outs. This range covers square vessel basins in charcoal, grey and black, where the cast surface gives each piece a tactile, stone-like finish that pairs well with vessel-height faucets. It sits within our wider concrete sink range. Custom sizes, colours, surface textures and tap-hole drilling available on request.

Service
OEM / ODM · free mold from 300 pcs
MOQ
20 ft / 40 ft containersBelow 1 container: your own China forwarder required.
Lead time
30–45 days after sample
4 products

Edge length decides it

Four square concrete sinks, one shared height

Every square vessel sink on this page is cast concrete, mounts above the counter and stands 120 mm (4.7") tall. Because the height never changes, the decision is really about plan size and cast tone, and the table puts all four side by side.

SANIKB C0023 Concrete Basin product photo

Swipe to compare all specifications

ModelOutlineCast toneSize (L × W × H)MOQ
15.4 Inch Square Concrete BasinC0011SquareBlack15.6" × 15.6" × 4.7" (395 × 395 × 120 mm)20 pcs
Speckled Square Concrete BasinC0023SquareGrey15.7" × 15.7" × 4.7" (400 × 400 × 120 mm)20 pcs
16.3 Inch Square Concrete BasinC0005SquareCharcoal16.3" × 16.3" × 4.7" (415 × 415 × 120 mm)20 pcs
Rounded Square Concrete Vanity BasinC0017Rounded squareCharcoal18.9" × 14.6" × 4.7" (480 × 370 × 120 mm)20 pcs

Rows run from smallest to largest. Three models are equal-sided; C0017 is the one exception, longer than it is wide, with softened corners.

Near twins, different tones

Why three almost-identical squares still matter

SANIKB C0011 Concrete Basin product photo

C0011, C0023 and C0005 sit within a narrow band, from 395 mm up to 415 mm per side. The plan sizes differ by 20 mm at most. What separates them is the cast tone: C0011 is the only Black model, C0023 the only Grey (with a speckled surface), and C0005 is Charcoal.

That makes the trio useful for a multi-unit project that wants close plan sizes across different finish schemes. A developer can order Black bowls for one building and Grey for another, with all three listed at the same 120 mm height.

If the tone you need is shown on a different size, ask for it. Custom sizes, colors, surface textures and tap-hole drilling are available on request, so the listed finish is a starting point for OEM and private-label runs.

Shortlist by the brief

Which square concrete sink to sample first

With only four models, the shortlist comes down to size, outline and tone. These notes set out what each one offers.

15.4 Inch Square Concrete Basin C0011 — SANIKBSmallest, darkestAt 395 × 395 mm, C0011 is the most compact plan in the range and the single Black option.Speckled Square Concrete Basin C0023 — SANIKBSpeckled greyC0023 is the speckled Grey model at 400 × 400 mm, the only Grey tone in this collection.16.3 Inch Square Concrete Basin C0005 — SANIKBLargest true squareC0005 is the largest equal-sided model at 415 × 415 mm, in Charcoal.Rounded Square Concrete Vanity Basin C0017 — SANIKBLonger than wideC0017 runs 480 mm long by 370 mm deep with rounded corners in Charcoal, the only model here that is not equal-sided.

Charcoal is the only tone offered in two outlines, so pairing C0005 and C0017 keeps one color across a square and a softened profile.

Common to all four

What a buyer can assume across the range

Material
Concrete, cast
Mounting
Above-counter (vessel), on every model
Overall height
4.7" (120 mm) on all four
Order minimum
20 pcs per model, quoted per order
Tones shown
Black (1 model), Grey (1), Charcoal (2)
Plan sizes
395 × 395 mm to 480 × 370 mm
Custom options
Size, color, surface texture and tap-hole drilling on request

Quote a square basin cleanly

Putting together a square vessel sink RFQ

Send these points in the first message and the quotation can come back complete. Written replies arrive within 12 business hours.

  1. Codes and quantities

    Name each model, for example C0023 and C0005, with a count for each. The 20 pcs minimum applies per model, so mixed orders are planned line by line.

  2. Tone per line

    Confirm the listed tone or request another, such as Grey on the C0005 size. Ask for samples if two tones will sit in the same project.

  3. Drilling and texture

    Say whether the bowl needs a tap hole or stays undrilled for a separate faucet, and whether the surface should differ from the standard cast.

  4. Size changes

    If a vanity needs a dimension that none of the four covers, give the target length, width and height so the mold can be confirmed.

  5. Label and destination

    For private label, add logo and carton needs; the process is set out on our OEM/ODM service page. Include the delivery port or site for freight.

Models from our wider concrete sink range can be added to the same inquiry.

Frequently Asked Questions

Can square concrete sinks be customized?

Yes. SANIKB can support customization for size, color, texture, finish, logo, and packaging based on order quantity, mold availability, and project requirements.

Are square concrete sinks suitable for hotel or commercial projects?

Yes. Square concrete sinks are suitable for hotels, restaurants, boutique commercial bathrooms, apartment projects, showrooms, and design-focused interiors. Buyers should confirm dimensions, sealing requirements, finish expectations, and installation details before bulk ordering.

What is the MOQ for square concrete sinks?

MOQ is available upon request. The final MOQ may depend on size, mold availability, color customization, packaging requirements, and whether the order is standard supply or OEM/ODM production.

Can we request samples before bulk production?

Yes. Sample support is available upon request. For custom orders, SANIKB recommends confirming samples before mass production to check color, texture, finish, dimensions, and packaging details.

Do you support private-label packaging?

Yes. Private-label packaging is available for qualified B2B orders. Buyers can request logo labels, custom cartons, product tags, and other packaging details based on brand or project requirements.

Can SANIKB provide product specifications?

Yes. Product specifications, catalogs, installation information, and care guidance are available upon request. Buyers should confirm required documents during the quotation stage.

How are concrete sinks packed for export?

Concrete sinks should be packed with protective export packaging to reduce transportation damage. Final carton structure, padding, pallet requirements, and private-label packaging can be confirmed based on order requirements.

What should buyers confirm before placing a bulk order?

Buyers should confirm size, color, surface texture, sealing requirements, drain position, installation method, MOQ, lead time, packaging, logo requirements, sample approval, and after-sales handling process before production.