Precision Sanitary Engineering · Dual-Hub Resilient Supply

Wholesale Bathtub Drain Kits Manufacturer & Factory

Architecting high-integrity solid brass bath waste assemblies, overflow configurations, and commercial drainage systems engineered to ASME A112.18.2 / CSA B125.2, UPC, and cUPC standards since 1998.

Engineered Drainage Components

Commercial Specifier & Wholesale Drain Assemblies

Explore our heavy-duty solid brass and stainless steel plumbing hardware, cast and machined under ISO 9001 certified precision processes for residential builders and commercial distributors.

China Deep Cup Strainer Ball-bearing Basket with tailpiece JN-1006-T Manufacturer, Manufacturers

China Deep Cup Strainer Ball-bearing Basket with tailpiece JN-1006-T Manufacturer, Manufacturers

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China Twist Locking Sink Strainer with tailpiece JN-1031-T Manufacturers, Suppliers

China Twist Locking Sink Strainer with tailpiece JN-1031-T Manufacturers, Suppliers

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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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Strategic Procurement Intelligence

Global B2B Procurement Realities: Bathtub Drain Systems

In the contemporary commercial, hospitality, multi-family, and pre-fabricated modular construction ecosystem, procuring wholesale bathtub drain kits involves evaluating life-cycle cost, strict code approvals, and delivery dependability.

Hospitality & Multi-Family Longevity

Commercial developers demand rugged solid brass waste & overflow (W&O) units capable of enduring aggressive descaling chemicals, repeated high-pressure hydraulic loads, and rigorous tenant turnarounds without thread galling or mechanical linkage creep.

Prefabricated & Pod Modularity

Offsite modular bathroom pods require standardized, pre-tested drain kit dimensions featuring slip-joint adjustability, telescopic overflow tubes, and captive O-ring seals that eliminate job-site solvent welding failures during crane lifts.

Multi-Jurisdiction Certification

Wholesale plumbing distributors cannot risk inventory quarantine. Every bathtub drain kit must comply with strict North American standards including ASME A112.18.2 / CSA B125.2, UPC, cUPC listings, and regional lead-free mandates like AB1953.

Labor-Saving Fast Assembly

With global plumbing labor costs escalating, tier-1 contractors specify "drop-and-lock" push-button (clicker) or lift-and-turn bath plugs that do not require complex inside-pipe drop-lever linkage adjustments beneath sub-flooring.

1998
Established Engineering Roots
28,400 m²
Global Production Footprint
200+
Sanitary Engineering Artisans & QC
Dual-Origin
China HQ & Thailand Facilities
Manufacturing Metallurgy

End-to-End Bathtub Drain Architecture & Metal Forming

A bathtub drain kit is a critical hydrostatic barrier preventing catastrophic hidden subfloor leaks. JANA Plumbing optimizes each production step in-house to protect brand reputations.

Hydraulic Forming & Precision Stamping

Overflow plates, strainer flanges, and deep drain cups are manufactured from high-purity brass alloys and SS304 sheets. Automated progressive dies eliminate micro-fracturing along tight contour radii, ensuring uniform wall thickness across 1-1/2" and 1-3/8" bath drain tubing.

CNC Threading & Critical Seating

Coarse threads (11-1/2 NPSM) and fine threads (16 NPSM) are cut on multi-axis CNC lathes. Sealing faces undergo 100% surface roughness verification, guaranteeing that rubber compression washers and beveled friction rings seat reliably without thread sealant tape failures.

PVD & Electroplated Architectural Finishes

Beyond traditional Polished Chrome, we engineer durable surface finishes: Matte Black, Brushed Nickel (BN), Oil Rubbed Bronze (ORB), and Physical Vapor Deposition (PVD) Brushed Gold. Our finishes pass 96-hour neutral salt spray (NSS) testing without blistering.

Geographic De-Risking

Industrial Footprint: China HQ & Thailand Production Hub

Global supply chain volatility has made tariff mitigation and production redundancy indispensable. JANA Plumbing provides importers an established dual-hub production system under unified quality control.

Yuhuan Headquarters (Zhejiang, China)

Founded in 1998, this 14,000 m² facility serves as our metallurgical research center, deep-draw hydraulic forming hub, tooling workshop, and high-volume brass casting facility. Housing over two decades of engineering expertise, it handles complex custom designs and high-capacity global orders.

  • Full internal lifecycle: Smelting, forging, CNC, polishing & testing
  • Direct access to the world's most concentrated sanitary hardware supply chain
  • Certified ISO 9001, UPC, and cUPC testing laboratories

Gateway Enterprise Facility (Kabinburi, Thailand)

Operational since December 2023, this 14,400 m² advanced facility in Prachinburi Province was purpose-built to shield North American importers from regional tariffs and supply disruptions, backed by automated production machinery.

  • Equipped with multi-axis automated manipulators and robotic buffing cells
  • Identical tooling, QA standards, and raw material specs as our China HQ
  • Eligible for strategic international trade origin requirements
R&D Pipeline

Technical Roadmap: Next-Generation Bathtub Drainage

As building codes evolve toward tighter environmental standards and smarter wastewater handling, our engineering team leads innovation across four core domains.

Lead-Free Eco-Metallurgy

Accelerating our transition toward proprietary bismuth- and silicon-stabilized copper alloys that comfortably surpass NSF/ANSI/CAN 372 and California AB1953 lead-content requirements while eliminating stress-corrosion cracking.

Tool-Free Rapid Drain Mechanisms

Developing patent-pending drop-in mechanical cartridges that allow end-users to swap stopper mechanisms (Tip-Toe, Push-Pull, or Lift-and-Turn) without unthreading the main drain flange from the bathtub basin.

Hair Interception & Vortex Flow

Computational fluid dynamics (CFD) modeling of overflow geometries and waste shoe conduits to maximize flow discharge rates above 7.0 GPM while capturing fiber debris above the water seal trap.

Integrated IoT Testing

Deploying inline acoustic emission testing and automated pneumatic differential decay sensors during assembly lines to verify 100% leak-proof seals on every brass waste tee before packaging.

Quality Verification

North American Code Compliance & Regulatory Protection

JANA Plumbing operates a strict Quality Management System validated by internationally recognized auditing bodies. We supply full documentation to protect your distribution network.

UPC / cUPC Listings (IAPMO R&T)

Our bath and shower drains are certified to meet or exceed ASME A112.18.2 / CSA B125.2 specifications. Regular unannounced factory surveillance audits ensure materials and dimensions consistently match filed drawings.

Lead-Free AB1953 & NSF Compliance

Through optical emission spectroscopy (OES) melt tests, every brass alloy heat batch is evaluated to confirm weighted average lead content remains well under 0.25%, meeting municipal health codes without sacrificing thread integrity.

ISO 9001 & BRC Manufacturing Audits

Our facilities implement comprehensive tracking from raw copper ingot purchasing through automated packaging. Barcode-indexed batch traceability supports warranty verification across private-label retail distribution.

Catalog Additions

Specialty Plumbing Fittings & Sanitary Strainers

Complete your supply chain orders with our complementary plumbing SKUs, engineered in our specialized brass machining plants.

Procurement Knowledge Base

Frequently Asked Questions (FAQ) for Bathtub Drain Kit Buyers

Technical guidance covering material selection, certification details, and wholesale supply agreements.

What product categories does JANA Plumbing manufacture in-house?
JANA Plumbing manufactures solid brass and stainless steel sink strainers, bar sink strainers, disposer flange and stopper sets, lavatory pop-up drains, standard & custom bath drains, shower drains, replacement drain assemblies, closet flanges, tank levers, shower arms and flanges, stainless sink bottom grids, flexible connection hoses, brass dielectric unions, and precision pipe fittings.
Which plumbing code listings and quality certifications cover your bathtub drain kits?
Our portfolio includes UPC and cUPC listings issued by IAPMO R&T under ASME A112.18.2 / CSA B125.2, compliance with California AB1953 lead-free mandates, ISO 9001 quality management certification, and BRC global standard manufacturing audits. Importers can request specific listing certificate numbers prior to placing initial production runs.
What are the key benefits of sourcing bathtub drain kits via your Thailand facility?
Our Kabinburi, Thailand plant (Gateway Enterprise Corporation) spans 14,400 m² and operates high-automation stamping and machining equipment. For North American and global buyers, sourcing from Thailand delivers supply-chain risk diversification and tariff advantages while utilizing identical engineering drawings, metallurgy specifications, and QC testing verified by our China headquarters.
Can JANA Plumbing accommodate custom OEM or private-label bathtub drain configurations?
Yes. With in-house tooling creation, hydraulic stamping, progressive die casting, multi-spindle CNC machining, polishing, electroplating, and custom packaging lines, we engineer custom bath waste kits based on CAD models, dimensional prints, or competitive benchmark samples with laser-etched branding and custom retail barcode packaging.
What metal alloys and drain stopper mechanisms are available for wholesale orders?
We provide bath drain shoe assemblies and waste piping in heavy cast brass (C37700 / low-lead equivalents), tubular brass (17-gauge and 20-gauge), and corrosion-resistant polypropylene/ABS options for spec-driven projects. Stopper mechanisms include Tip-Toe (Foot-Actuated), Push-Pull, Lift-and-Turn, and Classic Chain & Stopper assemblies in Chrome, Brushed Nickel, Matte Black, and PVD finishes.