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Guangxi White Marble Oval Vessel Basin 18.5×18.5Oval natural stone white bathroom vessel basin SP503SANIKB SP503 Guangxi White marble — oval vessel basin dimension drawing (Ø18.5" × 5.9" H  (Ø470 × 150 mm))
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Large Guangxi White Marble Round Vessel Sink 18.5in

SKU SP503
Certification
cUPC
Min. order
50 pcs
Lead time
30–45 days
Reply time
12 business hours
Material Guangxi White marble
Type Oval vessel basin
Size Ø18.5" × 5.9" H (Ø470 × 150 mm) Custom sizes
Mount Above-counter (vessel)
Finish
Polished

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Shape & size

Shape and size of Large Guangxi White Marble Round Vessel Sink 18.5in

SANIKB SP503 Guangxi White marble — oval vessel basin dimension drawing (Ø18.5" × 5.9" H  (Ø470 × 150 mm))
Dimension drawing
SizeØ18.5" × 5.9" H (Ø470 × 150 mm)
InstallationAbove-counter (vessel)
Colour #E8E3D9
MaterialGuangxi White marble

Send a spec. Get a real quote in 12 business hours.

Engineer-reviewed. cUPC · CE · ISO 9001 ready. 30–45 day lead time, FOB or CIF.

One itemised quote — not five
Feasibility & certification checked per market
Have a spec file? Attach it to your inquiry below.
— Project brief B2B only
Enquiry about Large Guangxi White Marble Round Vessel Sink 18.5in SKU SP503
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    Engineer reply within 12 business hours

    12 consecutive years at KBIS and IBS.

    — Most recent
    Feb 2026 KBIS· Orlando, USA
    Mar 2026 Expo Revestir· São Paulo, Brazil
    6 international shows annually
    2026 Expo Revestir

    2026Expo Revestir

    São Paulo, Brazil
    2026 KBIS

    2026KBIS

    Orlando, Florida
    2025 KBIS

    2025KBIS

    Las Vegas, USA
    2025 The Big 5

    2025The Big 5

    Dubai, UAE
    2024 IBS

    2024IBS

    Las Vegas, Nevada, USA
    2024 Expo Guadalajara

    2024Expo Guadalajara

    Guadalajara, Mexico
    2023 Canton Fair

    2023Canton Fair

    Guangzhou, China
    2019 Cersaie

    2019Cersaie

    Bologna, Italy
    2019 ISH

    2019ISH

    Frankfurt, Germany
    2017 The Big 5

    2017The Big 5

    Dubai, UAE
    2014 KBIS

    2014KBIS

    Las Vegas — US debut
    2013 BAU

    2013BAU

    Munich, Germany

    Factory documentation

    Certification scope depends on the selected model and destination market. Request model-specific documents with your quotation.

    IAPMO cUPC certificate
    ISO 9001 quality management certificate
    WRAS approved product certificate
    IAPMO certificate of listing
    UDEM CE technical inspection certificate

    Design & Proportion

    Guangxi White Marble in a Wide 18.5-Inch Round Bowl

    SP503 is a wide round bowl in Guangxi White marble. The circle measures 470 mm and the body stands 150 mm above the counter.

    01 / FORM

    Wide round bowl, low profile

    At 18.5 inches across and 5.9 inches high, the bowl reads wide rather than deep. It suits vanities where the basin sits low in front of a mirror.

    02 / STONE

    Even white ground

    Guangxi White is a light stone with a quiet ground. It gives a showroom a neutral option next to darker marble bowls.

    Distributors usually range this size beside a smaller bowl in the same finish. Adjacent sizes sit in the stone vessel basin range.

    Fit & Clearance

    Counter Planning for a 470 mm Round Basin

    The basin sits on the counter, so the rim is 150 mm above the finished top.

    Outside diameter
    18.5 in (470 mm)
    Overall height
    5.9 in (150 mm)
    Shape
    Round
    Mounting
    Above-counter (vessel)

    Plan the full 470 mm circle plus clear stone behind it for the tap. A tall vessel faucet or a wall-mounted faucet is usually needed to clear the 150 mm rim.

    Fix the drain opening and any overflow requirement on the drawing before production.

    Confirm the cut-out and drain center from the approved drawing, not from the listing photograph.

    Construction & Finish

    Polished Guangxi White Marble, Cut From Block

    Each body is cut and shaped from natural marble, then polished.

    Guangxi White Marble Oval Vessel Basin 18.5×18.5

    Polished

    Natural stone, natural variation

    Color and vein pattern shift from block to block. Photograph the actual lot if a showroom display has to match delivered stock.

    Natural marble is porous. Agree the care and sealing guidance you will pass to installers before the first shipment leaves.

    Request a production sample when the end client signs off on appearance.

    Compliance

    Import Documents Confirmed Before Production

    Submittal pack for the 470 mm body

    A dimensioned drawing covering outside diameter, height and drain position, issued for buyer approval.

    SP503 is cUPC listed. The record also holds stone, form, size, mount and finish. Request the current listing number and certificate validity so the documentation matches your destination market.

    Stone basins clear customs on different paperwork depending on where they land. Name the port in your RFQ and we will confirm what must travel with the goods.

    Procurement

    Ordering SP503 at Wholesale Volume

    Factory-direct wholesale. Importers and multi-branch distributors are the usual buyers.

    Published MOQ
    50 pcs
    Standard Lead Time
    30-45 days (typical)

    Diameter changes, a different white stone and private-label cartons are all quoted through the SANIKB OEM and ODM program.

    Include these details with the RFQ

    • Quantity per shipment and annual forecast
    • Destination port and entry documents
    • Drain opening size and overflow preference
    • Whether a matching smaller diameter is needed
    • Carton format and private-label artwork
    • Sample quantity before bulk release

    Lead time is confirmed on the quotation, not from this page.

    How we work

    From enquiry to shipment

    A factory-direct process built for importers, distributors and project buyers. No trading layer in between.

    1. 01

      Send the enquiry

      Tell us the model, quantity, destination market and any branding or packaging requirement. A spec sheet or drawing helps but is not required to start.

      Replied within 12 business hours
    2. 02

      Our sales team contacts you

      A named account manager follows up by email or WhatsApp, confirms the specification and clarifies anything missing before pricing.

      Email or WhatsApp
    3. 03

      Quotation

      You receive a written quotation with unit price, MOQ, packing details, lead time and the trade term you asked for. Entry, mid and premium build levels can be quoted side by side.

      FOB or CIF
    4. 04

      Sample approval

      We send a sample for finish, function and packaging sign-off. Branded samples are produced once artwork is confirmed.

      Before mass production
    5. 05

      Production and shipment

      Mass production starts after sample approval and deposit. QC and inspection run before loading, then the order ships to the agreed port.

      30–45 days after approval
    50+ New models developed every year, tracking current North American and European trends
    12 business hours Maximum first response to an enquiry
    Since 2000 Foshan factory, B2B trade only

    OEM and ODM to your specification

    We develop to a brief. Send a reference model, a drawing or simply the price band and market you are targeting, and we will propose what fits. Entry, mid and premium builds are all available from the same factory.

    • Your logo on product, carton and documentation
    • Private-label packaging and manuals
    • Custom finish matched to your standard
    • Custom dimensions and tooling where volume supports it
    • Product development from your reference or price target
    • Destination-market documentation prepared on request

    FAQs

    What stone is this large round vessel sink made from?

    It is carved from a single block of Guangxi White marble, a soft white stone with subtle grey veining, finished as an above-counter vessel basin.

    What are the exact dimensions of this vessel basin?

    The bowl measures Ø18.5" x 5.9" H (Ø470 x 150 mm), making it one of our larger round vessels suited to wide vanity tops in hospitality projects.

    What are the wholesale MOQ and lead times for this basin?

    Standard wholesale orders begin at low MOQ with typical production lead times of 25-40 days depending on quantity, and custom drain placement or finish can be quoted for distributor and hotel programs.