Featured Kitchen Strainers & Drainage Assemblies
Explore our primary tier of engineered kitchen sink strainers, bottom grids, bath wastes, and conversion kits manufactured across our Zhejiang and Thailand facilities.
China Kitchen Sink Bottom Grid, Antique Brown JN-9888-5-ABP Manufacturers, Factory
Wholesale Trip Lever Bath Waste JN-6003 Manufacturers, Suppliers
Wholesale Brass Pop-up Assembly JN-5014-L-BN Manufacturer, Factory
China Toe Touch Conversion Kit-1 Hole JN-6111 Manufacturer, Supplier
China Replacement Strainer Basket JN-1116 Supplier, Factory
China Brass Closet Spud JN-3001 Manufacturers, Suppliers
Wholesale Replacement Disposer Stopper JN-1114 Manufacturers, Supplier
Wholesale Replacement Strainer Basket JN-1105 Manufacturers, Factories
Metallurgical Excellence & Precision Hydroforming Engineering
Understanding the structural integrity, material grade selection, and hydraulic efficiency of modern stainless steel sink strainers for high-volume commercial and residential applications.
Austenitic Stainless Steel Grades: AISI 304 vs. AISI 316
In global plumbing manufacturing, the material foundation dictates longevity and resistance to localized pitting corrosion. Premium China stainless steel sink strainer suppliers utilize cold-rolled AISI 304 (18/8 Chromium-Nickel) and AISI 316 (18/10/2 Chromium-Nickel-Molybdenum) stainless steel alloys. AISI 304 provides exemplary yield strength (≥ 205 MPa) and tensile strength (≥ 515 MPa), making it ideal for standard residential food preparation environments subject to organic acids and household detergents.
For high-salinity coastal environments or commercial foodservice operations exposed to heavy chlorine sanitizers, AISI 316 strainers incorporate 2-3% Molybdenum, raising the Pitting Resistance Equivalent Number (PREN) from ~19 to >23. This prevents microscopic crevice corrosion beneath rubber sealing washers and locknut threads.
Deep-Drawing & Progressive Die Stamping Technologies
Manufacturing a seamless deep-cup kitchen sink strainer (such as the JN-1006 series) requires precise multi-stage progressive stamping and hydraulic deep drawing. The strain hardening of stainless steel sheets during deep cup formation demands automated intermediate annealing processes to relieve internal stress tensor forces.
| Material Specification | AISI 304 Stainless Steel | AISI 316 Stainless Steel | Heavy-Duty Solid Brass |
|---|---|---|---|
| Chemical Composition | 18% Cr, 8% Ni | 16% Cr, 10% Ni, 2% Mo | Cu 57-60%, Pb < 0.25% (Lead-Free) |
| Corrosion Resistance (NSS Test) | 96 Hours Pass | 240 Hours Pass | 120 Hours Pass (Plated) |
| Primary B2B Application | Residential Kitchen Sinks | Commercial Catering & Marine | Commercial Rough-In Plumbing |
| Tensile Strength | 515 MPa | 580 MPa | 380 MPa |
| Code Compliance | UPC, cUPC, ASME A112.18.2 | UPC, cUPC, NSF 61/372 | UPC, cUPC, AB1953 Lead-Free |
China Industrial Ecosystem & Dual-Origin Supply Chain Resilience
Navigating modern geopolitical tariffs, lead-time optimization, and raw material sourcing security through dual-base manufacturing infrastructure.
Yuhuan, Zhejiang HQ Manufacturing
Since 1998, our primary manufacturing cluster in Yuhuan, Zhejiang Province, has leveraged China’s most mature sanitary ware industrial ecosystem. In-house processes include raw brass forging, stainless steel cold-roll stamping, CNC precision thread cutting, automated polishing, and final electroplating/PVD coating. This vertical integration guarantees total operational control over every sub-component SKU.
Kabinburi, Thailand Expansion
Operational since December 2023, Gateway Enterprise Corporation (Thailand) Co., Ltd. spans 14,400 m² in the Kabinburi Industrial Zone, Prachinburi. Featuring modern robotic stamping cells and automated assembly lines, this second facility offers global importers total tariff mitigation (Section 301 exemption strategies) while enforcing identical ISO 9001 quality controls.
Supply Chain Risk Mitigation
By offering dual-origin sourcing (Country of Origin: China or Thailand), B2B buyers can seamlessly balance landed cost structures, mitigate geopolitical logistics bottlenecks, and establish resilient, long-term inventory buffer strategies for large-scale enterprise distribution centers.
Global Procurement, OEM Customization & Private-Label Matrix
Tailored manufacturing workflows for building material retail conglomerates, plumbing wholesalers, and OEM sink fabricators across North America and Europe.
Surface Finish Engineering & PVD Technology
Modern architectural trends demand unified metallic color palettes across kitchen fixtures. China factories utilize advanced Physical Vapor Deposition (PVD) Arc Ion Plating to deliver consistent aesthetic finishes that withstand harsh cleaning compounds:
- Polished Chrome (PC): Multi-layer electroplated Nickel-Chrome (>12μm Ni, >0.25μm Cr) exceeding ASTM B117 standards.
- PVD Brushed Brass / Gold (PVD-BN/BG): Zirconium Nitride (ZrN) coating yielding a scratch-resistant surface hardness up to 2000 HV.
- PVD Matte Black & Gunmetal (PVD-MB/GM): Titanium Aluminum Nitride (TiAlN) thin-film coating immune to fingerprint smudging and UV fading.
- Antique Copper & Bronze (AB/AC): Hand-rubbed chemical conversion coatings with protective acrylic clear coats.
Custom Packaging & Supply Chain Integration
We provide retail-ready packaging execution fully compliant with major big-box home center distribution guidelines:
- Retail Blister Clamshells: High-clarity thermoformed PET with custom die-cut insert cards and barcode labeling.
- Contractor Master Packs: Heavy-duty corrugated boxes optimized for pallet density and warehouse racking efficiency.
- Private-Label Laser Engraving: Micro-laser etched logos on strainer flanges, stoppers, and rubber gaskets.
- Custom Assembly Kits: Pre-assembled strainer units with tailpieces (e.g., JN-1001-1-T) to reduce contractor job-site labor.
Regulatory Compliance Standards & Localized Technical Support
Verifiable certification portfolios ensuring zero clearance friction with municipal plumbing inspectors and national retail compliance audits.
UPC & cUPC Certification
Issued by IAPMO R&T, our uniform plumbing code listings verify full compliance with ASME A112.18.2 / CSA B125.2 standards governing plumbing waste fittings. Strainers undergo rigorous mechanical thread shear testing, thermal cycling, and joint tightness evaluation under static pressure head conditions.
AB1953 & NSF/ANSI 372 Lead-Free Compliance
In adherence to North American drinking water standards and California AB1953 laws, all brass components in contact with potable water lines maintain a weighted average lead content of less than 0.25%, verified through X-ray fluorescence (XRF) testing.
ISO 9001:2015 Quality Management
Both our China and Thailand plants enforce total quality management systems (TQM). Every production batch undergoes First Article Inspection (FAI), Statistical Process Control (SPC) during stamping, and 100% pneumatic leak checking prior to packaging.
Next-Generation Strainer Design Trends & Innovations
Analyzing market shifts toward high-flow drainage geometries, workstation sink integration, and eco-friendly manufacturing.
1. Workstation Sink Multi-Tier Compatibility
With the rise of integrated culinary workstation sinks featuring internal ledges, strainers are evolving beyond passive waste catches. Modern designs incorporate low-profile deep baskets, flush drop-in stoppers, and secondary mesh traps that allow seamless operation beneath sliding cutting boards and colanders.
2. Hydraulic Flow & Anti-Clogging Geometry
Traditional grid strainers often choke under high-volume commercial kitchen rinsing. Next-generation strainers feature engineered micro-perforation arrays and ball-bearing detent basket stoppers (such as model JN-1006). This maintains maximum fluid discharge capacity (>45 L/min) while capturing food particles as small as 1.5mm.
3. Tool-Free Quick-Lock Installation Mechanics
To reduce plumbing installation labor costs, innovative China suppliers are engineering threaded brass locknuts with extended flanges and hand-tightening wing features. This eliminates the need for specialized plumber socket wrenches in confined under-sink cabinetry.
4. Sustainable Metallurgy & Low-VOC Finishes
Environmental regulations are accelerating the phase-out of hexavalent chromium plating processes. Modern factories are investing heavily in Closed-Loop PVD Arc Plating and physical water recycling infrastructure, providing green-building certified products aligned with LEED certification standards.
Localized Deployment & Industry Application Scenarios
Versatile drainage engineering deployed across diverse architectural and commercial sectors globally.
Residential Kitchens
Heavy-duty deep cup strainers (JN-1001, JN-1024) paired with stainless steel bottom grids (JN-9888 series) protect granite, quartz, and fireclay sinks against impact scratches while delivering lifetime leak prevention.
Commercial Foodservice
Deep junior duo basket strainers (JN-1206) constructed from 304/316 stainless steel withstand high-temperature grease discharges and industrial dishwashing detergents in commercial kitchens and hotel prep areas.
RV & Mobile Living
Compact 2-inch and 3.5-inch bar sink strainers and space-saving disposal flange sets configured for lightweight RV cabinetry and marine galley sinks subjected to continuous vehicle vibration.
Laboratory Sinks
Passivated AISI 316 stainless steel strainers engineered for chemical resistance in school chemistry labs, medical research facilities, and industrial testing environments.
Frequently Asked Questions: Sourcing & Engineering
Direct technical answers to common questions raised by procurement managers, OEM engineers, and plumbing importers.
What is the key advantage of sourcing stainless steel sink strainers from China & Thailand dual-factory bases?
Operating production bases in both Yuhuan, Zhejiang (China) and Kabinburi (Thailand) provides global importers with structural flexibility. China delivers unmatched supply chain speed, mature raw material access, and deep technical tooling capabilities. Meanwhile, our Thailand facility offers 100% tariff mitigation for North American buyers seeking to avoid Section 301 duties, maintaining unified ISO 9001 quality controls and identical UPC/cUPC product specifications.
How do you ensure leak-free sealing performance on deep-cup strainer models?
Our sink strainers (such as JN-1001 and JN-1006 series) feature precision CNC-machined die-cast brass locknuts and high-density EPDM/rubber washers paired with non-hardening fiber gaskets. The stainless steel cup walls maintain uniform rigidity, preventing flex when tightened to standard plumbing installation torques (25-30 ft-lbs).
Can JANA Plumbing produce custom OEM finishes to match faucet finishes?
Yes. Utilizing state-of-the-art Physical Vapor Deposition (PVD) and automated electroplating, we custom match customer finish target master swatches, including Brushed Nickel, PVD Matte Black, Brushed Gold, Gunmetal, and Antique Bronze, verified via spectrophotometer colorimeter testing.
What third-party plumbing code listings do your products carry?
Our strainer and waste assemblies carry verified UPC and cUPC certificates issued by IAPMO R&T, complying fully with ASME A112.18.2 / CSA B125.2. Furthermore, our brass products comply with lead-free mandates under AB1953 and NSF/ANSI 372 standards.
What are your standard production lead times and Minimum Order Quantities (MOQ)?
For standard catalog items, standard MOQs range from 500 to 1,000 units per SKU depending on finish. Production lead times average 30–40 days for initial container orders, with expedited 20-day reorder fulfillment available for established blanket-purchase programs.
Expanded Drain Components & Replacement Hardware
Secondary tier of high-demand strainers, grid grids, stopper assemblies, and disposer flanges manufactured to tight engineering tolerances.
China Deluxe Sink Strainer JN-1024 Manufacturers, Suppliers
Wholesale Flower Grid Strainer JN-5011 Supplier, Suppliers
Wholesale 4" OD Strainer Grid JN-6325 Manufacturers, Supplier
Wholesale Deep Junior Duo Basket Strainer JN-1206 Manufacturer, Suppliers
China Deep Cup Strainer Ball-bearing Basket JN-1006 Manufacturer, Supplier
China 4-1/4" OD Snap-in Strainer Grid JN-6323 Supplier, Factory
Wholesale Replacement Disposer Stopper JN-1120 Manufacturers, Factories
China Sink Strainer with tailpiece JN-1009-2-T Manufacturers, Supplier
Initiate OEM Engineering Inquiry or Request Catalog
Connect directly with our senior plumbing engineering team in Zhejiang or Thailand for factory-direct quotes, CAD spec reviews, or UPC certificate verifications.
China Headquarters: 52-1 Fugang Road, Bingang Industrial Zone, Shamen Town, Yuhuan, Zhejiang, China, 317607
Thailand Base: 454/10 Moo 9 Kabinburi Industrial Zone, T. Nongki, A. Kabinburi, Prachinburi 25110