Featured Commercial & Residential Drain Assemblies
Engineered to exceed North American and European plumbing codes. Explore our primary selection of heavy-duty brass and stainless steel sink strainers, linkage systems, and protective screens.
Wholesale Trip Lever Drain Assembly JN-6108
China Economy Strainer JN-1026 Suppliers, Factory
China Brass Linkage Assembly JN-6202 Manufacturer
Wholesale Replacement Strainer Basket JN-1102
China Replacement Brass Closet Spud JN-3001-F
Wholesale SS Basket Strainer JN-1015-BN
China Low Pattern Sure Grip Flange JN-8101
China Three Prong Drain Protector JN-1402
Executive Summary: Architectural Fluid Management & Macro Drain Solutions
Addressing modern urban plumbing bottlenecks, bio-film suppression, and hydraulic discharge rates in high-traffic residential and commercial lavatories.
Fluid Dynamic Optimization
Traditional bathroom sink drain screens often introduce fluid flow restrictions, leading to standing water accumulation and bio-film build-up. China's leading OEM factories utilize CFD (Computational Fluid Dynamics) simulations to re-engineer perforation geometries, achieving optimal flow velocities up to 18.5 GPM (Gallons Per Minute) while retaining 99.4% particulate filtration capability.
Bio-Film & Corrosion Mitigation
Accumulation of organic residue inside lavatory waste channels triggers sulfur-reducing bacterial growth. By specifying high-purity Lead-Free Brass (CuZn40 / H62) and passivated AISI 304/316 Stainless Steel mesh screens, our manufacturing systems guarantee high antimicrobial activity and total resistance against household chemical agents (pH 2 to pH 12).
Commercial Sourcing Economics
Scale-driven manufacturing in China offers global distributors and sanitaryware brands up to 42% cost reduction compared to European domestic forging, without compromising tolerances. Integrated tooling design enables rapid prototyping to volume shipment within a 25-day production cycle.
Engineering Metallurgy & Material Performance Comparison
Rigorous material selection is the cornerstone of structural longevity. Below is an engineering performance audit comparing raw materials used in OEM bathroom sink drain screen fabrication.
| Material Grade | Tensile Strength (MPa) | Corrosion Resistance | Lead Content (%) | Recommended Application Environment |
|---|---|---|---|---|
| Solid Forged Brass (H62/H65) | ≥ 390 MPa | Excellent (NSS > 196h) | < 0.25% (AB1953 Compliant) | Luxury Commercial & Premium Residential Lavatories |
| Austenitic Stainless Steel (AISI 304) | ≥ 520 MPa | Superior (NSS > 240h) | 0.00% (100% Lead-Free) | High-Traffic Hospitality, Institutional & Public Restrooms |
| Marine Grade SS (AISI 316) | ≥ 620 MPa | Maximum (Pitting Resistance) | 0.00% (100% Lead-Free) | Coastal Facilities, Cruise Ships & Medical Laboratories |
| Engineered ABS + Chrome Plating | ≥ 45 MPa | Good (NSS > 96h) | 0.00% (Non-Metallic Base) | Economy Rental Properties & Lightweight Modular Housing |
Precision Micro-Stamping & Hydro-Forming
Our Chinese production facilities utilize multi-stage progressive stamping dies capable of achieving mesh hole diameters down to 1.2mm without edge burrs. This ensures smooth water drainage while capturing hair strands and micro-particulates. Secondary hydro-forming guarantees precise rim contouring to seat flush against porcelain, glass, or vessel sink surfaces.
Surface Finishing & Electroplating Tech
To match modern bathroom interior design trends, our factory integrates PVD (Physical Vapor Deposition) coating chambers alongside multi-layer nickel-chrome electroplating lines. Available finishes include Polished Chrome, Brushed Nickel, Oil Rubbed Bronze, Matte Black, and Physical Gold, tested to withstand over 200,000 thermal cycles (10°C to 85°C).
China Factory 4.0: Automated Production & Supply Chain Resilience
Integrating Smart Automation with Dual-Origin Logistics to Eliminate Sourcing Vulnerabilities for International Importers.
Robotic Machining & Polishing
Automated 6-axis robotic arms perform continuous CNC machining, thread cutting, and polishing. Human error is effectively eliminated, guaranteeing seamless thread engagement on sink drain bodies and perfect flange concentricity across million-unit production runs.
Dual-Origin Strategy (China + Thailand)
To mitigate tariff fluctuations and geopolitical supply chain risks, our operations extend beyond our primary Yuhuan, Zhejiang facility. We operate fully equipped sister facilities in Kabinburi, Thailand (14,400 m²), offering global partners dual-sourcing options under identical ISO Quality Management Systems.
MES Automated Quality Control
Every batch undergoes inline optical vision inspection to verify hole positioning, edge smoothness, and thread pitch. Integrated ERP/MES software logs heat-code batch traceability from raw brass ingot to final packaged master carton.
Global Procurement: Compliance Standards & Regulatory Audits
Ensuring seamless market entry into North America, Europe, Australia, and the Middle East through certified code compliance.
North American Plumbing Code Compliance
For B2B importers supplying major retail chains (Home Depot, Lowe's, Ferguson), code compliance is non-negotiable. Our bathroom sink drain assemblies and screens strictly conform to ASME A112.18.2 / CSA B125.2 standards. Products are certified under UPC and cUPC listings by IAPMO, ensuring compliance with US National Plumbing Codes and Canadian regulations.
Lead-Free & Environmental Governance
Adhering to California AB1953 and the US Safe Drinking Water Act (SDWA), all brass components in contact with potable water or drainage effluent undergo strict XRF spectroscopy testing to guarantee lead content below 0.25%. Furthermore, our chrome plating plants run zero-discharge closed-loop water treatment systems aligned with global ESG criteria.
| Certification Mark | Governing Body | Applicable Scope | B2B Importer Value Add |
|---|---|---|---|
| cUPC Listing | IAPMO R&T | US & Canada Plumbing Code | Unlocks wholesale distribution & retail shelf placement |
| ISO 9001:2015 | SGS / TUV Rheinland | Quality Management Systems | Guarantees batch-to-batch structural consistency |
| AB1953 Standard | State of California | Lead Content Verification (<0.25%) | Eliminates environmental legal liability in North America |
| CE / EN 274 | European Union Compliance | Waste Fittings for Sanitary Appliances | Facilitates seamless import into EU Member States |
Technical Roadmap & Next-Generation Innovation (2026–2030)
Pioneering smart drainage solutions, bio-inspired anti-clogging geometries, and eco-sustainable manufacturing processes.
Nano-Scale Superhydrophobic Coatings
Next-gen drain screens feature fluoropolymer nano-coatings that reduce surface tension. Water sheets off rapidly without leaving water spots or soap scum accumulation, extending cleaning intervals by over 400%.
Magnetic Snap-Fit Quick Removal
Eliminating cumbersome screw threads, our patent-pending Neodymium magnetic lock mechanism allows end-users to detach the strainer screen with a simple upward lift for effortless maintenance.
Integrated IoT Micro-Sensors
Designed for modern smart commercial buildings, prototype drain screens incorporate micro-pressure transducers that monitor drainage flow rates and send automated clogging alerts to facility managers.
Frequently Asked Questions (Technical & Procurement FAQ)
Expert insights for OEM buyers, engineering specifiers, and sanitaryware importers.
Our standard Minimum Order Quantity for standard catalog SKUs is 1,000 pieces per batch. For custom OEM/ODM designs requiring dedicated progressive stamping dies or specialized PVD finishes, our MOQ starts at 3,000 units. We offer initial sample runs of 50–100 pieces for engineering validation prior to full mass production.
Thread cutting on our brass and stainless drain bodies is executed using multi-axis CNC turning centers in a single clamping setup. This guarantees absolute pitch accuracy (NPT or G thread standards) and perfect 90-degree perpendicularity relative to the sealing flange, preventing installation cross-threading and gasket leakage.
Yes. Our internal spectrophotometry laboratory can analyze customer-supplied target samples (e.g., custom Brushed Brass, Rose Gold, or Gunmetal) and formulate precise color-matching parameters in our PVD and electroplating baths, ensuring delta-E color variance under 0.8 across all production lots.
Tooling design, 3D CAD modeling, and DFM (Design for Manufacturing) review take 3 to 5 business days. Production of high-precision progressive carbide dies typically takes 18 to 22 calendar days, followed immediately by initial sample submission (FAIR - First Article Inspection Report).
Our Kabinburi, Thailand manufacturing base provides zero-tariff or reduced-tariff import advantages into North America and select trade zones, protecting buyers from Section 301 tariffs applied to mainland China exports while maintaining identical technical specifications, materials, and quality controls.
Complete OEM Drain Component & Sanitary Hardware Range
Explore our full line of specialty strainers, overflow plates, crumb cups, and compression couplings engineered for residential and commercial plumbing networks.
China Trip Lever Overflow Plate JN-6106
China Deep Junior Duo Strainer JN-1207
Wholesale Sink & Basin Crumb Cups JN-1104
Wholesale Economy Plastic Strainer JN-1008-5
Wholesale Compression Coupling JN-3004
Economy Strainer with Tailpiece JN-1007-T
China Side Mount Tank Lever JN-2008
