Wholesale Bathroom Sink Drain And Stopper Supplier & Factories

Precision-Engineered Sanitary Ware & Hydrodynamic Drainage Systems. Multi-Origin OEM/ODM Manufacturing with UPC, cUPC & AB1953 Lead-Free Compliance.

Direct Factory Catalog Part I

Featured Bathroom Sink Drains & Strainer Assemblies

Explore our top-tier engineered brass, stainless steel, and composite strainers built for heavy commercial, hospitality, and residential applications.

China Twist Locking Sink Strainer JN-1031 Supplier, Factories

China Twist Locking Sink Strainer JN-1031 Supplier, Factories

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Wholesale Brass Round Umbrella Drain JN-5012-NOF-L-BN Suppliers, Factory

Wholesale Brass Round Umbrella Drain JN-5012-NOF-L-BN Suppliers, Factory

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China Brass Closet Spud JN-3001 Manufacturers, Suppliers

China Brass Closet Spud JN-3001 Manufacturers, Suppliers

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Wholesale Sink Strainer JN-1009-2 Manufacturers, Factories

Wholesale Sink Strainer JN-1009-2 Manufacturers, Factories

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China 4-1/4 OD Snap-in Strainer Grid JN-6321 Manufacturers, Supplier

China 4-1/4" OD Snap-in Strainer Grid JN-6321 Manufacturers, Supplier

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Wholesale Deep Cup Plastic Strainer JN-1008-3 Manufacturer, Factory

Wholesale Deep Cup Plastic Strainer JN-1008-3 Manufacturer, Factory

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China Kitchen Sink Bottom Grid, Antique Brown JN-9888-5-ABP Manufacturers, Factory

China Kitchen Sink Bottom Grid, Antique Brown JN-9888-5-ABP Manufacturers, Factory

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China Lift & Turn Bath Waste Conversion Kits JN-6110 Supplier, Factory

China Lift & Turn Bath Waste Conversion Kits JN-6110 Supplier, Factory

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Industry Whitepaper Summary

Global Sourcing Dynamics for Commercial Drainage Hardware

An engineering analysis of material performance, regulatory shifts, and supply chain diversification for high-volume plumbing distributors and OEMs.

27+
Years Manufacturing Excellence
28,400m²
Dual-Origin Facility Area
100%
UPC / cUPC Compliance
0.25%
Max Lead Content (AB1953)

In the contemporary building products sector, sourcing heavy-duty, code-compliant bathroom sink drains and stoppers has evolved beyond mere unit cost management. Global procurement managers, MEP (Mechanical, Electrical, and Plumbing) contractors, and private-label brand owners face an increasingly stringent regulatory landscape alongside heightened consumer expectations for long-term finish durability and mechanical reliability.

As standard municipal building codes across North America (such as ASME A112.18.2 / CSA B125.2) and Europe (EN 274) enforce strict limits on heavy metal leaching, flow hydrodynamics, and structural load tolerances, selecting an qualified OEM supplier requires deep engineering vetting. JANA Plumbing operates dual manufacturing bases in Yuhuan, Zhejiang, China and Kabinburi, Prachinburi, Thailand—providing global importers with complete supply-chain resilience, tariff optimization, and certified compliance.

Technical Architecture

Lavatory Drain Engineering & Mechanism Selection

Understanding structural choices between Pop-Up, Umbrella, Touch-Down, and Grid Strainer configurations for modern architectural sinks.

Pop-Up & Umbrella Mechanisms

Designed with spring-loaded brass cartridges tested over 100,000 actuation cycles. Ideal for residential vanity bowls and luxury hospitality suites requiring seamless aesthetic integration and zero-leak sealing.

Overflow vs. Non-Overflow Channeling

Machined with dual side-body water bypass channels. Non-overflow versions feature solid forged brass bodies for glass, vessel, and stone basins without integrated overflow passages.

PVD & Electroplated Finishes

Advanced physical vapor deposition (PVD) guarantees high resistance to scratching, tarnishing, and chemical cleaners. Available in Brushed Nickel, Matte Black, Oil Rubbed Bronze, and Polished Chrome.

Material / Metallurgy Yield Strength (MPa) Corrosion Resistance Lead Content (% Weight) Target Application
C37700 Forged Brass ≥ 340 MPa High (Passes 96h NSS Salt Spray) < 0.25% (AB1953 compliant) Commercial, High-End Residential
CuZn39Pb3 Machined Brass ≥ 310 MPa Excellent Standard Trace Standard Plumbing Fixtures
Grade 304 Stainless Steel ≥ 205 MPa Superior Acid/Alkali Resistance 0% (100% Lead-Free) Industrial & High-Traffic Public Facilities
PBT Engineered Polymer ≥ 55 MPa Immune to Rust / Chemical Damage 0% Budget-Conscious Commercial & RV Markets
In-House Production Roadmap

Vertical Manufacturing & Quality Assurance Process

From raw alloy ingot analysis to automated packaging, JANA Plumbing maintains end-to-end control across every manufacturing stage.

1. Raw Material Metallurgy & Spectrometric Validation

Quality control begins at the alloy intake level. Utilizing optical emission spectrometers (OES), our metallurgical engineers test each batch of raw brass rod and ingot to ensure zero lead contamination below statutory limits and maintain optimal copper content for press-forging ductility.

2. Precision CNC Machining & Thread Tolerances

Drain bodies, locknuts, and tailpieces are machined using multi-axis CNC lathes capable of maintaining tight tolerances within ±0.01 mm. Straight pipe threads (NPSM) and tapered pipe threads (NPT) conform strictly to ASME B1.20.1 standards, ensuring seamless joint fitment with standardized P-traps and extension tubes.

3. Hydrostatic Pressure & Leakage Testing

Every stopper mechanism and pop-up plug undergoes air-under-water and hydrostatic pressure testing at 0.5 MPa (5 Bar) to guarantee air-tight sealing against silicone gaskets and molded EPDM washers, eliminating potential call-backs and water damage risks for building owners.

Global Market Landscape

Supply Strategy for Regional & Commercial Demands

How localized building standards dictate product design, flange geometries, and bulk packing solutions worldwide.

North American Region (USA & Canada)

Requires strict UPC/cUPC certification, ASME A112.18.2 testing, and NSF/ANSI 61 standard compliance. Standard vanity cutout diameters (1-1/2" to 1-3/4") necessitate uniform flange dimensions with 1-1/4" OD tailpieces.

European & British Standard Markets

Governed by EN 274 performance benchmarks. Systems typically utilize G 1-1/4" BSP parallel threads with specialized push-button mechanisms optimized for modern wall-hung basin aesthetics.

Hospitality & Commercial Developments

High-traffic hotel chains demand vandalism-resistant grid strainers or heavy-duty push stoppers with easily accessible hair-catcher baskets to minimize maintenance downtime.

Compliance & Certifications

International Certifications & Regulatory Audits

Our manufacturing plants operate under full quality management frameworks audited by third-party laboratories.

Passing retail vendor audits and clearing customs smoothly requires unquestionable documentation. JANA Plumbing holds valid, verifiable certificates across major international standards:

  • IAPMO R&T UPC / cUPC Listings: Certified for seamless installation under Uniform Plumbing Code across the United States and Canada.
  • California AB1953 Lead-Free Standard: Wetted surface metal content verified under 0.25% max lead calculation.
  • ISO 9001:2015 Quality Management Systems: Total process control from purchasing to final assembly.
  • BRC Global Standard Audits: Verified workplace safety, ethical manufacturing, and industrial operational hygiene.
Direct Factory Catalog Part II

Specialty Plumbing Hardware & Strainer Components

Discover our comprehensive collection of specialty strainers, disposer flanges, grid covers, and bath conversion kits.

Wholesale Flower Grid Strainer JN-5011 Supplier, Suppliers

Wholesale Flower Grid Strainer JN-5011 Supplier, Suppliers

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Wholesale Sink Protectors and Bottom Grid, Kitchen Sink Rack with Rear Drain Hole SG17-28TS Manufacturer, Factory

Wholesale Sink Protectors and Bottom Grid, Kitchen Sink Rack with Rear Drain Hole SG17-28TS Manufacturer, Factory

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Wholesale No-Caulk Shower Drain JN-6302 Factories, Factory

Wholesale No-Caulk Shower Drain JN-6302 Factories, Factory

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Wholesale Deep Cup Strainer Stick Post Basket with tailpiece JN-1014-T Manufacturer, Factories

Wholesale Deep Cup Strainer–Stick Post Basket with tailpiece JN-1014-T Manufacturer, Factories

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Wholesale 1 Hole Overflow Plate JN-6104 Supplier, Factory

Wholesale 1 Hole Overflow Plate JN-6104 Supplier, Factory

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Wholesale Shallow Pattern Sure Grip Flange JN-8100 Manufacturer, Manufacturers

Wholesale Shallow Pattern Sure Grip Flange JN-8100 Manufacturer, Manufacturers

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Wholesale Disposer Flange & Stopper Set JN-1302 Manufacturers, Factories

Wholesale Disposer Flange & Stopper Set JN-1302 Manufacturers, Factories

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China Replacement Strainer Basket JN-1115 Manufacturers, Factory

China Replacement Strainer Basket JN-1115 Manufacturers, Factory

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Technical Procurement FAQ

Frequently Asked Questions by B2B Buyers

Comprehensive answers regarding OEM/ODM capabilities, lead times, certification verification, and multi-origin manufacturing logistics.

What are the benefits of sourcing drains from your Thailand facility versus your China headquarters?
Our Thailand factory (located in Kabinburi Industrial Zone, Prachinburi) covers 14,400 square meters and offers identical automated tooling, machinery, and quality control protocols as our Zhejiang headquarters. Sourcing from Thailand allows international importers to mitigate trade tariffs and diversify supply chain logistics while preserving exact engineering specifications and material standards.
How do you guarantee lead-free compliance for North American markets?
All brass alloys intended for drinking water and lavatory fixtures are tested via inline Spectrometry prior to casting and forging. We strictly adhere to AB1953 and NSF/ANSI 372 standards, ensuring that maximum lead content on wetted surfaces remains below 0.25%. Independent IAPMO test reports are provided with every product batch.
Can you produce custom finishes matched to our existing faucet lines?
Yes. Our automated electroplating and PVD finishing lines can master-match custom physical color samples, including Matte Black, Brushed Brass, Rose Gold, Chrome, Gunmetal, and Oil-Rubbed Bronze. Finish samples undergo spectrophotometer color testing and CASS salt-spray testing to confirm coating adhesion and long-term corrosion resistance.
What is the standard minimum order quantity (MOQ) for OEM custom projects?
Standard stock catalog items carry flexible minimum order quantities starting at 500 to 1,000 units per SKU. For custom OEM designs requiring specialized molds or progressive stamping dies, initial MOQs are typically 2,000 to 3,000 units depending on component volume and material setup.
How are your bathroom sink stoppers tested for long-term cycling and water tightness?
Pop-up springs and internal click-clack cartridges undergo rigorous pneumatic cycle testing exceeding 100,000 compressions without seal fatigue. Furthermore, 100% of finished assemblies are tested under hydrostatic pressure to ensure total sealing against silicone and rubber washer interfaces.
Do you offer private-label retail packaging and customized barcoding?
Yes. We provide complete packaging solutions including full-color retail box designs, clamshell blisters, polybags with headers, master carton printing, and custom GS1 barcode labeling tailored for home improvement center shelves and wholesale distributor warehouses.

Accelerate Your Plumbing Sourcing Program Today

Partner with an established manufacturer offering dual production origins, verified code certifications, and uncompromised engineering quality.