JIS & JWWA Compliant Drain Engineering

China Sink Strainer Manufacturer & Manufacturers for the Japan Market

Precision-engineered solid brass and SUS304/SUS316 kitchen sink strainers, anti-odor deep cup systems, and architectural sanitary drain hardware tailored for Japanese modular systems and wholesale distributors.

Featured Japanese Spec Series

Heavy-Duty Solid Brass Sink Strainers: Standard & Pre-Assembled Sets

Our premier solid brass strainers configured for extreme durability, ultra-smooth threading, and optimal mating with Japanese kitchen system cabinetry.

Industry Intelligence

Engineering for the Japanese Architectural & Plumbing Landscape

Japan's residential and commercial drainage architecture is characterized by stringent hygiene expectations, compact multi-family layouts, and the prevalence of modular System Kitchens (システムキッチン).

System Kitchen Integration

Japanese kitchen construction is heavily standardized by integrated prefabricated manufacturers. Sink strainers must conform to exact aperture tolerances (such as standard Ø115mm and Ø180mm interfaces) with zero clearance failure under slim under-counter cabinetry.

Hermetic Odor-Trap Architecture

Due to high urban density in metropolitan centers like Tokyo, Osaka, and Fukuoka, Japanese plumbing codes enforce air-tight water-seal traps (Wans (椀) traps) integrated within the strainer body to prevent volatile sewer gases from migrating into living quarters.

Deep-Cup Debris Segregation

Unlike Western garbage disposal systems, Japanese culinary practices require high-volume stainless steel or antibacterial PP catch baskets that strain food solids without clogging, demanding micro-perforated deep cups that maintain continuous laminar water flow.

Send Inquiry Now for Japanese OEM Specifications
1998
Established Year
28+ Years of Precision Engineering
28,400 m²
Dual-Plant Capacity
Yuhuan (China) & Kabinburi (Thailand)
< 0.02%
PPM Defect Tolerance
Multi-stage Optical & Pneumatic QC
100%
Traceability Verification
Spectral Material Batch Certification
Technical Analysis

Engineering Benchmark: Japanese Standard (JIS) vs. Western Plumbing

How JANA Plumbing adapts manufacturing lines to satisfy Japanese mechanical specifications, sealing methods, and hygiene dynamics.

Feature Parameter Japanese Market Standards (JIS / JWWA) Western Market Standards (ASME / CSA) JANA Manufacturing Execution
Standard Diameters Ø115mm (Compact Apartments) / Ø180mm (Standard) Ø3-1/2" (approx. Ø89mm) Dedicated hydraulic tooling for Ø115mm & Ø180mm deep-drawn press bodies.
Primary Material Grade JIS H 3250 C3604 brass, SUS304, or high-density PP ASTM B584 / C37700 brass, 201/304 Stainless Certified lead-free eco-brass & Japanese-grade austenitic stainless steel.
Internal Trap System Integrated Bell-type Wan-Trap with water seal barrier External P-Trap downstream in under-sink piping Integrated inverted cup trap with zero air bypass and anti-siphon stability.
Strainer Basket Design Deep-volume antimicrobial mesh basket (80–120mm depth) Shallow plug-in stopper basket (25–35mm depth) High-capacity punch baskets with smooth edge deburring to avoid waste snags.
Under-Flange Sealing Peroxide-cured EPDM / NBR compression gaskets Plumber's putty or silicone compound Pre-molded micro-ribbed elastomeric gaskets for tooling-free, zero-leak compression.
Supply Chain Resilience

Why Japanese Sourcing Houses Partner with JANA

We bridge advanced Chinese brass machining capabilities with geopolitical diversification and strict Japanese incoming-quality-acceptance standards.

Full In-House Metallurgy

From raw ingot melting and hydraulic extrusion to CNC threading and robot polishing, our 100% in-house manufacturing process gives total control over grain structure and porosity.

China + Thailand Dual Origin

Headquartered in Yuhuan, China with a 14,400 m² automated facility in Kabinburi, Thailand, we mitigate cross-border supply chain risks and tariff uncertainties for multinational trading desks.

Japanese Quality Control (Kaizen)

Our quality control engineers deploy strict 5S and poka-yoke (mistake-proofing) tooling, ensuring every thread, surface finish, and washer meets Japanese inspection protocols.

Rapid Prototype to Production

Equipped with high-precision 5-axis CNCs and 3D coordinate measuring machines (CMM), we take custom OEM drawings to verified functional samples within 15 working days.

Application Engineering

Localized Application Scenarios in Japan

Our drainage hardware powers diverse installations across Japanese residential complexes, hospitality landmarks, and commercial kitchens.

Mansion & Danchi Urban Complexes

High-density multi-story residential towers in Tokyo and Yokohama demand low-profile drain housings that fit shallow under-sink voids while preventing backpressure gurgling and odor leakage.

Izakaya & Commercial Kitchens

Heavy commercial cooking requires industrial-grade SUS304 strainers equipped with thermal-shock resistant sealing rings capable of handling continuous scalding water and grease loading.

Elderly-Care & Universal Access Facilities

Barrier-free kitchens throughout Japan require extra-smooth touch, easy-turn lock mechanisms, and antimicrobial copper-ion infused or high-polish baskets that can be emptied with minimal effort.

Complete Drain Portfolio

Deep Cup, Ball-Bearing & Engineered Polymer Sink Strainers

Comprehensive sink strainer assemblies engineered for high filtration capacity, effortless maintenance, and long service lives across international distribution channels.

Technical Clarifications

Frequently Asked Questions: Sourcing for Japan

Clear, technical insights to help Japanese importers, contractors, and kitchen manufacturers qualify our drain production capabilities.

Can JANA manufacture sink strainers compliant with Japanese JIS and JWWA dimensional standards?
Yes. While our historical production heavily serves North American UPC/cUPC standards, our factory tooling includes specialized progressive dies and deep-draw presses configured for standard Japanese sink openings—specifically Ø115mm (compact multi-family apartment sinks) and Ø180mm (large-format modular system kitchen sinks), complete with compatible thread pitches and gasket seat geometries.
How does JANA ensure air-tight odor containment required for Japanese multi-family residences?
Odors from multi-family drainage stacks are a major concern in Japanese housing. We engineer built-in water-trap barriers (such as bell/cup wan-traps) directly into our sink strainer assemblies. Each unit is tested under positive and negative pneumatic pressure to guarantee that sewer odors and micro-insects cannot breach the water-seal boundary.
What alloy compositions are utilized for brass and stainless steel sink strainers?
For solid brass models, we utilize high-density C3604 brass or lead-free eco-brass alloys compliant with California AB1953 and JIS H 3250 metallurgy standards. For stainless steel components, we strictly stamp using genuine SUS304 or marine-grade SUS316, verified via optical emission spectrometers to resist pitting from salty broths, shoyu (soy sauce), and harsh dishwashing detergents.
How do the dual factories in China and Thailand benefit Japanese procurement teams?
Our dual-plant model provides geographic risk mitigation. Sourcing managers can execute tooling, mold verification, and mass production at our Yuhuan headquarters in China, or leverage our 14,400 m² automated facility in Kabinburi, Thailand. Both plants share identical ISO 9001 quality management workflows, giving importers resilient production schedules and tariff flexibility.
What are the typical lead times and minimum order quantities (MOQ) for custom OEM projects?
For standard catalogue items, our standard MOQ is 500 units per SKU. For custom OEM/ODM projects requiring custom stamping dies, brand laser-etching, or tailored retail packaging, tooling takes approximately 20–25 days, followed by sample sign-off and 30–35 days mass production lead time. Air-shipped pre-production evaluation samples are provided upon request.

Start Your OEM Strainer Program for the Japan Market

Connect with our technical engineering department in Yuhuan, China or Kabinburi, Thailand to review CAD drawings, test metallurgical samples, or request a complete commercial quote.

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