Explore our curated structural glass assemblies, frameless sliding systems, custom enclosures, and premium wellness units built for commercial and residential development properties.
In contemporary commercial developments and luxury residential projects, bathroom design has transitioned from a purely utilitarian function to a primary selling point. The centerpiece of this transformation is the modern glass shower door system. Today's procurement executives, hotel development engineers, and wholesale importers no longer evaluate glass shower enclosures based solely on visual transparency; they prioritize advanced structural physics, safety performance, glass processing treatments, and long-term durability metrics.
Frameless and semi-frameless glass installations have emerged as the dominant global specification. This demand stems from the architectural intent to optimize natural light transmission, eliminate dark corners, and create clean horizontal planes. However, going frameless introduces major structural requirements. Because frameless configurations lack perimeter metal channels to distribute stress, the glass panels themselves must serve as structural members. Consequently, manufacturing processes must achieve zero tolerance in glass edge finishing, absolute flatness across the panel face, and precise drilling of hinge and handle holes to prevent structural failure under load.
Founded in 2005, Hangzhou Kaifeng Sanitary Ware Co., Ltd. operates a modern 20,000 square-meter production facility in Hangzhou's Xiaoshan District. With two decades of research, development, and engineering expertise, Kaifeng has built a fully integrated supply chain capable of delivering premium bathroom products, including freestanding bathtubs, massage bathtubs, steam showers, shower cabins, and modular shower panels. This infrastructure allows us to export more than 80% of our products to highly regulated markets in the United States, Canada, the United Kingdom, Germany, South America, and the Middle East.
Our story is one of consistent growth driven by engineering precision. What started as a focused workshop has developed into a leading exporter that sells 36,000 freestanding bathtubs, 6,000 massage bathtubs, 60,000 shower rooms, and 12,000 complete systems annually. By combining automated glass tempering, precise CNC metal processing, and rigorous quality check protocols, we provide global buyers with sanitary ware that meets strict performance standards.
Standardized workflows trace every raw glass sheet and metal extrusion back to its heat number and batch source for complete accountability.
Tolerance levels are maintained within ±0.5mm for metal frames and structural glass panels, ensuring smooth and rapid on-site assembly.
Our tempering processes conform to North American SGCC and European CE EN 12150 safety glass certification protocols.
Choosing Hangzhou Kaifeng Sanitary Ware as your manufacturing partner provides access to a highly integrated industrial cluster in Zhejiang, China. The Hangzhou-Shaoxing-Ningbo industrial corridor contains a dense network of high-purity silica float glass production plants, precision aluminum extrusion mills, stainless steel casting factories, and specialized surface treatment facilities. This localized density minimizes the carbon footprint of transport, reduces material lead times, and allows for rapid customization cycles.
Our raw float glass is sourced from premium suppliers to ensure low iron content, minimal air bubbles, and excellent structural consistency. Once the glass enters our 20,000 square-meter facility, it undergoes computerized cutting, precision edge grinding, hole drilling, and thermal tempering in our automated furnace. Tempered glass panels are then treated with hydrophobic nano-coatings to repel water and soap scum. By keeping these operations in-house, we control quality at every step, reduce material waste, and offer competitive pricing to our global distributors.
We apply high-performance hydrophobic nano-coatings that bond with the silica molecules on the glass surface. This barrier repels mineral deposits and scaling, reducing cleaning frequency by up to 75%.
We source structural hardware made from solid SUS 304/316 stainless steel and anodized 6063-T5 aluminum, ensuring high corrosion resistance in wet environments.
Our thermal tempering process increases the flexural strength of our glass to four to five times that of standard annealed glass, meeting all major international safety standards.
For architectural project managers, material compliance is a critical step in building verification. Our products are fully tested to conform to rigorous performance criteria, including:
In addition to raw material certifications, we perform lifecycle stress testing on our hardware assemblies. Our sliding door rollers, hinges, and pivot brackets undergo 100,000 open-close cycle tests under maximum load to guarantee operation without wear or structural drop. All framing extrusions are subjected to 48-hour salt spray testing to verify rust resistance and long-lasting finish quality in humid environments.
For e-commerce partners and direct-to-site project deliveries, packaging integrity is vital. We utilize heavy-duty corrugated cartons containing high-density polyethylene (HDPE) edge protectors, shock-absorbing polystyrene foam blocks, and vacuum-sealed plastic wraps. This packaging is designed to meet ISTA 3A and 6A drop-test criteria, preventing transit damage through shipping and courier networks.
Architects and interior designers are continually refining bathroom layouts to maximize both style and utility. Below are the key design integrations we support:
High-end properties prioritize space optimization and minimalist design. Our custom frameless sliding doors (like the Anlaike KF-2314B) feature soft-close dampers and slim tracking profiles that save floor space while offering smooth, quiet operation.
Consistency, ease of installation, and structural durability are key for multi-family builds. Our pre-drilled glass panels and adjustable wall-profile systems adapt to out-of-plumb walls, reducing labor costs and installation times.
Modern layouts often incorporate curbless, barrier-free walk-in showers to support aging-in-place and universal access. Our fixed glass panels and wide-opening hinged doors make it easy to create layouts that meet ADA guidelines.
A visual look inside our 20,000 square-meter facility, showcasing our glass processing machines, structural assembly areas, and quality control systems.
Glass thickness determines the structural stiffness, weight, and overall feel of the shower door assembly. 6mm (1/4") glass is commonly used for framed or semi-frameless sliding systems where metal framing provides the primary support. 8mm (5/16") is a versatile option that offers a solid feel with a moderate weight, suitable for both semi-frameless and framed structures. 10mm (3/8") is the standard for high-end frameless designs, offering excellent structural rigidity, weight, and safety. 12mm (1/2") is reserved for premium custom heavy glass installations, requiring heavy-duty brass hinges and concrete anchor paths to support the weight of the panels.
Spontaneous breakage in tempered glass is primarily caused by nickel sulfide (NiS) inclusions. During tempering, these microscopic inclusions change phase and expand over time, creating internal stress that can lead to breakage. To minimize this risk, Kaifeng uses high-quality raw float glass with low trace impurities. We also offer heat soak testing (HST) as an optional quality control step. In this test, tempered glass panels are placed in a calibrated chamber and heated to approximately 290°C. This accelerates the expansion of any NiS inclusions, causing at-risk glass to break within the controlled test environment rather than after installation.
Yes. As an experienced OEM/ODM manufacturer, we customize structural elements, wall profiles, hardware, and finishes to meet local building standards. Whether your project requires ADA-compliant entry widths, specific threshold dams for water containment, or out-of-plumb adjustments to accommodate uneven drywall, our engineering team can modify our standard product designs to match your project specifications.
For standard designs in our catalog, our typical production lead time is 30 to 45 days from receipt of deposit and technical approval. Custom OEM configurations may require an additional 10 to 15 days for design, prototype creation, and testing. Our standard MOQ is a 20-foot shipping container, which can include a mix of shower enclosures and bathtubs to help distributors and project developers optimize their logistics costs.
To ensure long-lasting performance in humid bathroom environments, all our aluminum extrusion channels are anodized or powder-coated to a thickness of 10 to 15 microns. Our stainless steel components (such as rollers, handles, and hinges) are made from SUS 304 or 316 steel and undergo electro-polishing or multi-layer PVD vacuum plating. This creates a durable finish that resists tarnishing, scratching, and oxidation over time.
A selection of our high-quality massage bathtubs, space-saving sliding enclosures, and pivot-door systems designed for modern bathrooms.
Kaifeng
