Custom Commercial Pot Sink Design & Specification Guide: Size, Depth, Drains & OEM Options
傅建立A custom commercial pot sink should be specified around the largest cookware, the washing workflow and the plumbing conditions—not selected by overall size alone. For importers, distributors, commercial kitchen contractors and project buyers, the bowl dimensions, depth, stainless steel grade, sheet thickness, drain system, backsplash, drainboard and supporting structure all affect performance, cost and shipping efficiency.
SENFON is a commercial pot sink manufacturer and commercial stainless steel sink manufacturer in China with more than 20 years of production experience. As a source commercial sink factory, SENFON manufactures standard and custom stainless steel washing equipment for international B2B orders, including single-, double- and triple-bowl sinks, large pot-washing sinks, sink tables, sink cabinets and OEM project products. Buyers can first view SENFON’s commercial stainless steel sinks and sink tables to compare the main product structures.
Quick answer: The correct commercial kitchen pot sink should be large enough to load, turn and clean the biggest pot without unsafe lifting or excessive splashing.
SENFON commonly manufactures bowls with 250 mm or 300 mm depths, SUS304 or SUS201 material, 0.7–2.0 mm custom thickness, 1.5-inch, 2-inch or 4-inch drain options, and either fully welded or knock-down supporting structures. The final specification must be confirmed on the approved production drawing.
Commercial Pot Sink Specification at a Glance
| Specification | Common Direction | What the Buyer Must Confirm |
|---|---|---|
| Bowl configuration | Single, double or triple bowl | Washing stages, cookware size and available floor space |
| Bowl depth | 250 mm or 300 mm commonly requested | Largest pot height, operator reach and plumbing clearance |
| Material | SUS304 or SUS201 | Wet conditions, chemicals, budget and destination-market requirements |
| Thickness | 0.7–2.0 mm available; 1.0–1.5 mm frequently requested | Component-specific gauge, reinforcing and expected load |
| Drain outlet | 1.5-inch, 2-inch or 4-inch options | Nominal size, actual fitting, quantity and position |
| Base structure | Open frame, undershelf, cabinet, welded or KD | Storage, local assembly capability and shipping plan |
1. Start with the Washing Application and Workflow
Before asking what size commercial sink do I need?, identify what will be washed. A restaurant equipment sink for stock pots has different requirements from a prep sink for vegetables, an industrial kitchen sink for food-processing containers or a three-stage commercial kitchen washing station.
Measure the largest stock pot, tray, container or removable machine part that will enter the bowl. The internal bowl opening—not only the external table dimensions—must allow the item to be loaded, rotated, scrubbed and removed safely. This is the first step in learning how to measure a commercial sink accurately.
| Sink Type | Typical Use | Important Design Questions |
|---|---|---|
| Single bowl commercial pot sink | Large pots, trays and general washing | Is the bowl opening large enough for the biggest item? |
| Double bowl commercial pot sink | Separate washing and rinsing | Should both bowls be equal, or should one be larger? |
| Triple bowl commercial sink | Multi-stage wash, rinse and sanitizing workflow | What overall length and local restaurant sink requirements apply? |
| Large stainless steel pot sink | Oversized stock pots and food-processing containers | Can the operator lift and reach into the bowl safely? |
For a commercial sink for restaurant kitchen use, traffic direction also matters. Consider where dirty cookware arrives, where it is washed, where clean items drain and whether the drainboard should be on the left or right. Hotel, hospital, school and central-kitchen projects may require a larger work area or separate washing stages. A commercial sink for hotel kitchen use often needs to coordinate with dishwashing rooms, trolleys and adjacent preparation equipment, while a commercial sink for food processing may require unusual bowl dimensions or special openings.
2. Confirm Commercial Pot Sink Dimensions
Commercial pot sink dimensions should include both external and internal measurements. A complete drawing normally states overall length × width × height, bowl length × width × depth, backsplash dimensions, drainboard length and all opening positions.
When preparing custom pot sink dimensions, leave enough working clearance around the largest item. Also check doorways, elevators and installation routes at the destination. An oversized product may fit the kitchen layout but still be difficult to move into the building if transport access was not considered.
Common commercial kitchen sink sizes vary by market and application, so SENFON does not force every project into one standard. As an OEM commercial sink producer, the factory can manufacture according to a buyer drawing, purchasing list, approved sample or marked reference photograph. Buyers who need a complete product-selection framework can also read how to choose a commercial stainless steel sink.
3. Choose the Correct Commercial Pot Sink Depth
The commercial pot sink depth affects capacity, splash control, operator posture, water consumption and the space available for plumbing or an undershelf. When no other depth is confirmed for a standard project, SENFON uses 250 mm as the default bowl-depth basis. The two most frequently requested directions are:
- 250 mm deep commercial sink: suitable for general commercial washing, easier reach and routine restaurant-kitchen work.
- 300 mm deep commercial sink: often selected for larger pots, higher washing volume and better splash containment.
There is no universal answer to how deep should a pot sink be? The standard depth of a commercial pot sink should be matched to the cookware and the operator. A deeper bowl provides more volume, but it can also increase reach distance and change the required working height. For very large cookware, lowering the top height or adjusting the bowl position may create a safer solution than increasing depth alone.
Before approving depth, confirm:
- The diameter and height of the largest pot or container
- Required water volume and expected washing load
- User height, lifting position and comfortable reach
- Available drain, trap and waste-pipe space below the bowl
- Whether an undershelf, cross brace or cabinet will be installed
- The final working height after adjustable feet are fitted
4. Deep-Drawn or Custom Welded Sink Bowl?
A deep-drawn stainless steel sink bowl and a custom welded stainless steel sink bowl can both be used in a commercial kitchen pot sink, but they solve different sourcing needs.
Deep-drawn bowl
A deep-drawn bowl is formed from stainless steel sheet using a mold. It normally provides consistent geometry, rounded internal corners and a smooth, easy-to-clean surface. It is efficient when the required dimensions match an existing mold and the importer needs repeatable standardized production. SENFON’s available options can be reviewed on the commercial deep-drawn stainless steel sink bowl page.
Welded bowl
A welded bowl provides more freedom in length, width, depth, shape and drain position. It is often the better choice for a heavy duty commercial sink, an oversized pot sink or a non-standard project in which an existing deep-drawing mold cannot meet the required size. View SENFON’s custom welded stainless steel sink bowl for made-to-drawing options.
The decision on deep drawn vs welded sink bowl should consider the required dimensions, order quantity, tooling, corner shape, finishing standard and budget. For a detailed process comparison, read the deep-drawn vs welded stainless steel sink bowl guide.
5. Select SUS304, SUS201 or SUS430 Stainless Steel
Buyers often ask, what is the best stainless steel for a commercial sink? The answer depends on water exposure, cleaning chemicals, coastal conditions, required service life, local purchasing standards and budget. The material grade must be written clearly on both the quotation and approved production drawing.
| Material | Recommended Direction | B2B Buyer Consideration |
|---|---|---|
| SUS304 | Wet commercial kitchens and demanding washing environments | Commonly preferred for stronger corrosion resistance and long-term use |
| SUS201 | Cost-sensitive commercial projects with suitable use and maintenance | Balances project cost with practical commercial performance |
| SUS430 | Selected dry or light-duty components when specifically required | Not normally recommended by SENFON for the principal welded bowl and top in continuously wet service |
A SUS304 commercial sink is normally preferred for demanding wet environments because 304 stainless steel provides a stronger corrosion-resistance margin. A SUS201 commercial sink can be used in suitable markets when cost control is important and the buyer understands the operating and maintenance conditions.
When comparing 304 vs 201 stainless steel sink specifications, do not compare material price alone. Consider destination climate, chloride exposure, cleaning practices, weld finishing and expected service life. SENFON generally recommends discussing SUS201 before choosing SUS430 for the main wet structure. Weld zones, cut edges and polished areas in SUS430 require greater corrosion control, especially where water may remain.
6. Confirm Stainless Steel Thickness and Reinforcement
A reliable commercial sink thickness guide must evaluate the gauge together with the bowl size, tabletop span, reinforcing channels, leg dimensions, welding method and expected operating load. Thickness alone does not determine whether a sink is heavy-duty.
| Thickness | General Specification Direction |
|---|---|
| 0.7–0.9 mm | Economical or lighter-duty construction, subject to correct reinforcing and dimensions |
| 1.0 mm | SENFON’s standard production basis when no different thickness is specified |
| 1.2–1.5 mm | Frequently selected for more demanding commercial and project applications |
| Up to 2.0 mm | Special heavy-duty or project-specific fabrication |
If a 1.0 mm stainless steel sink is ordered and the confirmed specification does not assign different gauges to individual parts, SENFON uses 1.0 mm as the production basis for the sink bowl, top and leg-tube wall thickness. A 1.5 mm stainless steel sink may be selected for demanding projects, but reinforcement and structural design must still be evaluated.
Buyers asking what gauge stainless steel sink is best? should state whether the requirement refers to nominal incoming sheet thickness or actual finished thickness after surface finishing and fabrication. If separate gauges are required for the bowl, top, backsplash, undershelf, cabinet panels or leg tubes, list every component individually before pricing.
7. Specify the Commercial Pot Sink Drain Size and Position
Common commercial pot sink drain size options include:
- 1.5-inch drain outlet
- 2-inch drain outlet
- 4-inch drain outlet
The 4 inch commercial sink drain is the most frequently requested option for pot-washing sinks and high-volume applications. However, the nominal drain description and the actual opening or waste-fitting dimensions are not always identical. The buyer should provide a fitting sample, technical sheet or marked drawing when a specific local connection standard must be matched.
The commercial sink drain position can be central, rear, left or right, depending on plumbing and the location of the undershelf or cabinet. Confirm the outlet size, quantity, exact center point, waste fitting, overflow requirement, bowl slope and pipe connection before production. These details help prevent interference during commercial sink installation.
8. Select the Backsplash, Drainboard and Base Structure
A custom stainless steel pot sink can be configured as a simple open-frame unit or a complete washing workstation. Common options include:
- Commercial pot sink with backsplash
- Commercial pot sink with drainboard on the left, right or both sides
- Commercial sink with undershelf
- Commercial sink with adjustable legs and bullet feet
- Commercial sink with faucet holes
- Round-tube or square-tube legs
- Cross bracing or stainless steel reinforcing channels
- Mobile castors for suitable applications
- Waste-disposer or scrap-chute openings
- Open base, three-sided enclosure or full cabinet base
Faucet holes must be confirmed before fabrication. Provide the hole diameter, center-to-center spacing, quantity and exact location. Faucets shown in product images are not automatically included and should be listed separately when required.
For washing and lower storage, compare a commercial sink table with recessed top and undershelf and a commercial stainless steel sink with customizable undershelf. Projects requiring an open base can use a commercial sink table with round-tube legs. For enclosed storage, review the custom stainless steel sink cabinet with KD design.
Commercial kitchen contractors who only need the fabricated upper section can specify a custom stainless steel sink top and coordinate the base locally.
9. Fully Welded vs Knock-Down Commercial Sink
Fully welded commercial sink
- Delivered as a finished assembled unit
- Reduces destination installation work
- Suitable when shipping volume is not the main constraint
- Useful when the buyer prefers minimal local assembly
KD commercial sink
- Legs, braces and undershelf can be packed separately
- Uses less container space than a comparable assembled frame
- Allows more units or mixed products to be loaded in one shipment
- Supports importers, distributors and commercial sink wholesale orders
A knock down stainless steel sink can retain a securely fabricated bowl-and-top section while using an assembly structure for the supporting frame. SENFON generally recommends an export-efficient KD structure when container utilization and freight cost are important. The final decision should consider order quantity, local assembly capability, packaging protection and the buyer’s required delivery format.
10. Hygiene, Cleaning and Market Requirements
Good stainless steel sink specifications support drainage and practical cleaning. Smooth exposed surfaces, accessible corners, controlled weld finishing, suitable bowl slope and correctly positioned drains help reduce areas where water and residue remain. Rounded deep-drawn corners are convenient to clean, while a welded bowl should receive appropriate weld smoothing and finishing for its application.
NSF’s food equipment standards overview explains that NSF/ANSI 2 addresses materials, design, fabrication, construction and performance requirements for food equipment, including sinks, shelves and tables.
This reference does not mean every custom configuration is automatically NSF certified. Buyers who require NSF, CE or another destination-market standard must provide the exact certification, sanitation and construction requirements before quotation. Local restaurant sink requirements, plumbing rules and installation approvals remain the buyer’s responsibility unless a specific compliance scope is written into the order.
11. Custom Sink Drawing Requirements and OEM Process
Clear custom sink drawing requirements reduce quotation errors and production changes. SENFON follows a drawing-confirmation process for custom kitchen sink design and project fabrication:
- Define the application: Explain what will be washed, the operating environment and the daily workflow.
- Provide overall dimensions: State length × width × height and the installation-space limits.
- Provide bowl dimensions: State internal bowl length × width × depth for every compartment.
- Select material: Confirm SUS304, SUS201 or another required grade.
- Assign thickness: List the gauge for the bowl, top, backsplash, shelf, panels and tubes when they differ.
- Mark all openings: Confirm drains, faucet holes, waste-disposer openings and their center positions.
- Choose accessories: Specify drainboards, backsplash, side splashes, undershelf, cabinet, feet, castors and reinforcement.
- Choose the structure: Confirm fully welded or KD construction and the required packing method.
- Approve the drawing: Check every dimension, direction, hole position and assembly detail before production.
For a standard design, a sample can normally be completed within about three production days after the drawing, material, thickness and structure are confirmed. Complex fabrication, special tooling or non-standard purchased parts may require more time. Sample manufacturing time excludes international transportation, and the final schedule must be confirmed in the quotation.
Importers developing a wider range can review SENFON’s OEM/ODM commercial kitchen equipment customization services. Buyers comparing supply models can also use the commercial stainless steel sink sourcing guide to evaluate factory capability, drawings, quality control, packing and shipment planning.
12. MOQ, Wholesale Orders and Export Packing
SENFON is a B2B stainless steel sink supplier, commercial sink supplier and commercial kitchen equipment manufacturer; the factory does not operate as a retail seller. There is no fixed minimum order quantity for a custom commercial stainless steel sink, but the complete order, packing and shipping plan must be commercially practical.
For an importer or distributor purchasing a mixed container of commercial kitchen equipment, one customized sink can be manufactured as part of the wholesale export order. Large-volume orders, mixed models and KD designs should be planned together to improve container loading and reduce freight cost per unit.
Standard KD products can use export cartons. Large sizes, welded units, LCL shipments or higher-risk routes may require a wooden frame or crate. Protection around corners, drain outlets, backsplashes and exposed surfaces should be confirmed according to the product and shipping method.
13. Commercial Pot Sink RFQ Checklist
Use this commercial sink buying guide checklist when requesting a quotation from SENFON:
- Overall length × width × height
- Number of bowls and required workflow
- Internal bowl length × width × depth
- Largest pot, tray or container dimensions
- SUS304, SUS201 or other required material
- Thickness for each principal component
- Drain outlet quantity, size, fitting and position
- Backsplash height and side-splash requirements
- Drainboard quantity, dimensions and direction
- Faucet-hole quantity, diameter, spacing and position
- Undershelf, cabinet, legs, feet or castor requirements
- Fully welded or knock-down structure
- Required quantity and other products in the order
- Destination country or port
- Required packing and shipping method
- Drawing, reference photograph, fitting data or purchasing list
- Required certification or destination-market standard
Frequently Asked Questions
What size commercial pot sink do I need?
Measure the largest item that will be washed and select internal bowl dimensions that allow enough clearance for loading, turning, scrubbing and removal. Then confirm the external size against the kitchen layout, access route and adjacent equipment.
What is the standard depth of a commercial pot sink?
SENFON uses 250 mm as the default bowl-depth basis when no other depth is confirmed. The two most frequently requested depths are 250 mm and 300 mm, but other depths can be manufactured according to an approved drawing.
Is 250 mm or 300 mm better for a commercial kitchen pot sink?
A 250 mm bowl generally provides easier reach for routine washing, while a 300 mm bowl offers more capacity and splash containment for larger cookware. The correct depth depends on pot height, operator posture, working height and plumbing clearance.
What thickness is commonly used for a commercial stainless steel sink?
Commercial projects frequently request 1.0–1.5 mm stainless steel. SENFON supports custom thicknesses from 0.7 to 2.0 mm. When no separate component thickness is specified, 1.0 mm is used as the standard production basis.
Is SUS304 better than SUS201 for a commercial sink?
SUS304 is normally preferred for demanding wet environments because of its stronger corrosion resistance. SUS201 can be selected for cost-sensitive commercial projects when it is suitable for the intended environment, market and maintenance conditions.
Why does SENFON not normally recommend SUS430 for the main wet structure?
SUS430 provides a smaller corrosion-resistance margin than SUS304 in demanding wet and welded applications. Welded, polished and cut areas require greater control, especially where water remains. SENFON normally recommends discussing SUS201 before using SUS430 for the main bowl and top.
What is the most common commercial pot sink drain size?
Common options include 1.5-inch, 2-inch and 4-inch drains. A 4-inch drain is the most frequently requested for commercial pot sinks, but the exact opening, waste fitting and local pipe standard must be confirmed before production.
Can SENFON pre-cut faucet and disposer holes?
Yes. The factory can cut faucet, drain and waste-disposer openings during production. The diameter, center-to-center spacing, quantity and exact location must be approved on the drawing.
Can SENFON manufacture a commercial pot sink with drainboard and undershelf?
Yes. Left, right or double drainboards, rear and side splashes, undershelves, open frames and cabinet bases can be customized. Round-tube and square-tube leg options are also available.
Is a KD commercial sink suitable for export?
Yes. A KD supporting frame can reduce packing volume and improve container utilization while keeping the bowl-and-top section securely fabricated. Correct assembly and packing instructions should be included in the export plan.
Can a distributor order one custom pot sink?
One custom sink can be manufactured as part of a distributor’s mixed wholesale or export order. SENFON serves B2B buyers rather than retail consumers, so the complete order and shipping structure must remain commercially practical.
Request a Custom Commercial Pot Sink Quotation
SENFON is a source commercial sink manufacturer supporting international importers, distributors, wholesalers and commercial kitchen project buyers. The factory manufactures custom stainless steel pot sinks with configurable bowl dimensions, 250 mm or 300 mm depths, SUS304 and SUS201 material options, 0.7–2.0 mm thicknesses, multiple drain systems, drainboards, backsplashes, shelves, cabinets, welded frames and export-efficient KD structures.
Review SENFON’s factory and certifications, then send your drawing, reference image or purchasing list through the SENFON contact page. Include the required size, bowl dimensions, material, thickness, drain, accessories, quantity, packing method and destination so the factory can evaluate the design and prepare an accurate quotation.
