Sink Strainer Manufacturer & Factories

Our sink strainers and related sanitary drain fixtures comply directly with ASME A112.18.2 / CSA B125.2 (Plumbing Waste Fittings) and NSF/ANSI 61. We hold active UPC and cUPC listing certificates issued by IAPMO R&T (including Certificates No. 6229, 8175, 12307, N-11587, and T-11586), certifying conformity for legal installation across the United States and Canada. In addition, our solid brass formulations are fully certified to California AB1953 and NSF/ANSI 372 lead-free standards (<0.25% weighted lead content across wetted surfaces). International buyers can request specific SKU listing verification documents directly from our compliance team prior to placing container orders.

Solid brass sink strainers (such as our JN-1001 series) are manufactured using hot-forged CW617N / C37700 brass alloy. Compared to stamped sheet steel or molded polymers, hot-forged brass provides superior wall density, eliminating porosity, pinholes, and internal casting voids. Brass possesses natural antibacterial properties, exceptional resistance to dezincification in alkaline or chlorinated municipal water supplies, and high tensile strength capable of withstanding heavy installation torque without stripping locknut threads. This makes brass the premier choice for luxury residential builds and high-liability multi-family housing.

Since 1998, our Yuhuan headquarters in Zhejiang, China has served as our technological center of excellence, managing in-house hydraulic forming, tooling design, CNC machining, and electroplating across 14,000 square meters. To shield international clients from trade volatility, tariffs (such as US Section 301), and geopolitical disruptions, Gateway Enterprise Corporation (Thailand) Co., Ltd. was established in Kabinburi Industrial Zone, Prachinburi Province. Spanning 14,400 square meters with automated robotic lines, our Thailand facility allows buyers to diversify their supply origin with 0% anti-dumping risk while enjoying unified product drawings, tooling, and strict ISO 9001 quality audits.

We manufacture three primary sealing architectures:
1. Spin & Lock Mechanism (JN-1002 / JN-1003): Utilizes die-cast internal locking pins that compress the neoprene stopper ring against the brass seat via a quarter-turn rotation, creating an airtight, positive mechanical lock immune to backpressure.
2. Ball-Bearing & Snap-In Basket (JN-1004 / JN-1005 / JN-1006): Employs spring-loaded 316 stainless steel ball bearings located inside the center post, allowing smooth vertical transit between open drainage and sealed standing-water positions.
3. Four-Pronged Friction Guides (JN-1010): Designed for rapid contractor drop-in replacements with heavy rubber seal discs that compress under water weight.

Yes. Over 80% of our production volume is delivered under private-label OEM agreements for international plumbing brands and distributor house labels. Our engineers can adapt flange diameters (from standard 4-1/2" OD to custom European or RV dimensions), modify thread lengths, integrate custom tailpieces, and laser-etch your corporate trademark on the basket stopper or flange rim. We offer complete packaging solutions, including retail blister packs, custom full-color retail cartons, multi-pack contractor master cartons, and barcoding compliant with GS1 standards.

For standard brass and stainless steel sink strainers, our baseline MOQ is typically 1,000 units per SKU, or consolidated container shipments combining multiple categories (e.g., sink strainers, disposer flanges, shower drains, and closet flanges). Standard production lead times range between 35 to 45 calendar days following tooling approval and deposit receipt. For recurring supply contracts, we support automated blanket order releases and localized safety stock buffers to accommodate urgent replenishment cycles.