Custom Stainless Steel Undermount Kitchen Sinks

Matrix® undermount sinks combine refined aesthetics with daily practicality — offering a sleek edge-free finish that simplifies cleaning and elevates any kitchen design.

Trusted Undermount Sink Manufacturer in China — Matrix

Undermount sinks sit flush beneath the countertop, offering a smooth, uninterrupted surface that makes cleaning easier and enhances kitchen flow.

At Matrix®, we manufacture high-quality custom stainless steel undermount sinks, tailored to a variety of shapes, sizes, and configurations — from compact residential kitchens to large-scale commercial projects.

Discover the Right Undermount Sink for Your Kitchen

Matrix® undermount sinks combine style with everyday functionality — available in single or double bowls, pressed or handmade designs, and various surface finishes to match your kitchen’s unique needs.

Small single bowl series

Sleek, spacious, and easy to clean—perfect for streamlined modern kitchens.

Large Offset bowl series

Smart layout for multitasking—maximize space without sacrificing style.

Large single bowl series

Generous capacity with clean lines—ideal for chefs and busy families alike.

double bowl with plate series

Dual-functionality with built-in drainboard—wash, rinse, and dry with total efficiency.

Key Advantages of Stainless Steel Undermount Sinks

  • Seamless Countertop Integration – Installed beneath the countertop, under-mount sinks create a smooth, uninterrupted surface that simplifies wiping debris directly into the sink.

  • Clean, Minimal Aesthetic – With no exposed rim, the sink blends effortlessly into modern kitchen designs, offering a sleek and unobtrusive look.

  • More Usable Counter Space – Without a rim sitting on top of the counter, you gain extra working space around the sink area.

  • Flexible Design Compatibility – Under-mount sinks work well with solid surface materials like quartz, granite, and marble, making them a versatile choice for premium countertops.

  • Easy Maintenance – Fewer crevices mean less buildup of grime and easier day-to-day cleaning, especially in high-use kitchens.

Stainless Steel Grades for Your Ideal Sink

As a stainless steel sink manufacturer, Matrix® offers multiple material options to match different performance needs and project budgets.

  • SUS316: Engineered for extreme durability and corrosion resistance. Ideal for coastal areas, medical facilities, or commercial kitchens. The added molybdenum content ensures long-term performance even in harsh conditions.

  • SUS304: The most widely used option for residential sinks. Known for its excellent rust resistance, strength, and versatility — it balances quality and value for everyday use in most home and light commercial kitchens.

  • SUS201: A budget-friendly alternative with lower nickel content. Best for dry or low-risk environments, where corrosion exposure is minimal. Ideal for cost-conscious projects with short cycles or seasonal use.

     

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Explore Undermount Sinks for Residential & Commercial Use

Matrix® custom under-mount sinks provide a sleek, seamless design that complements any environment — from modern home kitchens to high-demand commercial spaces. With flexible sizing, finish options, and installation compatibility, they fit perfectly into residential, hospitality, education, and food service projects.

Modern Residential
kitchen
School & Institutional
kitchen
Café & Beverage Prep
kitchen
Luxury hotel
Bathroom

How to Install a Matrix® Under-Mount Sink?

Follow our step-by-step kitchen sink installation guide to properly install your Matrix® stainless steel under-mount sink — with clear visuals, tips, and tools for any countertop style.

 

1

Measure and Cut the Countertop Opening

Mark the cutout using the provided sink template. Then, use a jigsaw or CNC machine to cut the hole in a solid-surface countertop such as granite, quartz, or solid wood.

0. Measure & Mark Cutout
1.cleaning the counter-1

2

Clean the Underside & Dry Fit the Sink

Wipe the underside of the countertop with denatured alcohol to remove grease or dust. Place the sink in position temporarily to check alignment and fit.

3

Apply Silicone Sealant

Apply a continuous bead of kitchen-grade silicone around the sink rim and the underside of the countertop to ensure full coverage and a watertight seal.

2.Apply Adhesive on counter and sink
4.Position the sink-1

4

Position the Sink

Carefully position the sink under the countertop. Use sink setter clips, clamps, or wood supports (like 2x4 blocks) to hold it securely in place while aligning it with the cutout.

5

Install Mounting Brackets

Attach the provided mounting clips or brackets to the marked positions. Gradually tighten each bracket to pull the sink evenly and securely against the countertop.

5.Secure the Sink-1
7.Allow Adhesive to Cure-1

6

Allow Adhesive to Cure

Let the silicone cure for at least 24 hours before connecting plumbing or applying weight. For epoxy adhesives, follow the manufacturer’s specific cure time.

Frequently Asked Questions

Explore these common queries about the stainless steel kitchen sinks. Contact us for further assistance!

 

Under-mount sinks offer a seamless transition between countertop and sink, making cleanup easier and supporting a clean, minimalist look in modern kitchens.

Under-mount sinks require solid surface materials such as quartz, granite, marble, or solid wood to ensure a secure and moisture-resistant installation.

Yes, Matrix offers flexible custom options—including single or double bowl, drain location, depth, and corner radius—to suit various cabinetry layouts and user needs.

Yes, under-mount installation requires more precision and professional mounting support, but offers better long-term stability and aesthetics once installed correctly.

It depends on your application, we normally recommend 16-gauge or 18-gauge stainless steel, cuz 16-gauge (1.2 mm) for better strength, dent resistance, and quieter performance.

In most cases, retrofitting an under-mount sink to an existing countertop is not recommended unless the surface is solid and professionally reworked. It's best suited for new countertop installations.

Pressed sinks are formed in molds and have smooth curves with larger corner radii—ideal for cost-effective installs. Handmade versions feature tighter corners, thicker steel (1.2–1.5 mm), and more custom flexibility.

Yes, we accept OEM service and branding with Matrix for distribution under our brand.

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12.sink handmade sink

Request a Custom Quote

Tell us your project or sink specifications. Whether you need a custom handmade sink, pressed sink, or multifunctional design, our engineering team will recommend the best fit in terms of size, material, style, and installation method.

Contact Matrix premium manufacturerExperts

Matrix® is a premium stainless steel sink manufacturer serving global OEM/ODM partners with flexible solutions and competitive pricing.

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