Foshan Xuanqing Zhilian Technology Co., LTD Cases

Innovation in Refrigeration Systems: Holeless Piano Hinges of 304 and 201 Stainless Steel in Cold Storage Applications I. Material Fundamentals: 304 vs. 201 Stainless Steel 304 Stainless Steel (1.4301/SS 304)   Composition: Fe-18Cr-8Ni, C≤0.08%, excellent intergranular corrosion resistance. Mechanical Properties: Tensile strength ≥515 MPa, yield strength ≥205 MPa, elongation ≥40%. Corrosion Resistance: Passes 500-hour salt spray test (ASTM B117), ideal for humid environments (RH≥70%).   201 Stainless Steel (1.4372/SS 201)   Composition: Fe-17Cr-5Mn-0.6Ni, lower Ni content but higher Mn for strength. Mechanical Properties: Tensile strength ≥520 MPa, yield strength ≥275 MPa, elongation ≥40%. Corrosion Resistance: Suitable for dry environments; 200-hour salt spray resistance (ASTM B117), cost 30% lower than 304. II. Case Study: Hybrid Material Application in Cold Storage Zones Client Challenge: A pharmaceutical distribution center in Texas required:   Zoned Corrosion Resistance: Freezer rooms (-25°C, 80% RH) and dry storage (5°C, 40% RH) needed differentiated solutions. Cost Optimization: Balance performance with budget constraints for 500+ cold storage doors.   Solution Design:   Freezer Zones: 304 stainless steel holeless piano hinges (2.0mm thickness) with TIG-welded joints. Dry Storage Zones: 201 stainless steel hinges (1.5mm thickness) with laser-cut edges for precision.   Technical Specifications:   Parameter 304 Hinges (Freezer) 201 Hinges (Dry Storage) Surface Treatment Electropolished (Ra≤0.8μm) Passivated (Ra≤1.6μm) Thermal Expansion 17.2×10⁻⁶/°C 18.5×10⁻⁶/°C Joint Design Full-length continuous weld Intermittent welds (100mm intervals) III. Installation & Performance Validation 1. Freezer Zone Implementation Welding Process: 304 hinges welded with ER308L filler wire (1.2mm diameter), post-weld annealing at 1050°C to eliminate carbide precipitation. Sealing System: Silicone gasket (Shore A 60) embedded in hinge grooves, achieving air leakage ≤0.05 m³/(m·h) at 250Pa pressure. 2. Dry Storage Zone Implementation Cost-saving Measures: 201 hinges use press-fit mounting tabs instead of full welding, reducing labor by 40%. Durability Testing: 100,000 cycle fatigue test at -5°C to 30°C temperature swing, no crack initiation observed in 201 components. IV. Operational Outcomes (12-Month Data) Metric 304 Hinges (Freezer) 201 Hinges (Dry Storage) Industry Baseline (Traditional Hinges) Energy Consumption 18% lower than baseline 12% lower than baseline N/A Corrosion Incidents 0 (no pitting/oxidation) 0 (minor surface discoloration) 3–5 incidents/year Maintenance Cost $2,500/year $1,800/year $8,000/year Door Seal Lifespan 60 months (projected) 48 months (projected) 24 months V. Technical Innovations Hybrid Material Design Thermal break design in 304 hinges: Polyamide 66 strips (0.5mm) reduce heat transfer by 55%, preventing condensation in freezer zones. Intelligent Monitoring 304 hinges integrated with strain gauges (accuracy ±50με) to monitor stress in real-time, data transmitted via IoT gateway to BMS. Welding Quality Control 100% ultrasonic testing (UT) for 304 welds (defect detection ≥0.3mm), visual inspection for 201 welds (surface roughness ≤25μm). VI. Industry Implications Cost-Benefit Paradigm 304 stainless steel suits critical zones (pharmaceuticals, seafood), while 201 optimizes non-corrosive environments (dry food storage), achieving 25–40% cost savings. Regulatory Compliance Meets NSF/ANSI 3-A standards for food contact surfaces (304 hinges), and ISO 14644-1 Class 8 for cleanrooms (201 hinges with passivated finish).

On February 22nd, a group of Iraqi customers made their way to Foshan Xuanqing Factory. The factory, which has long been celebrated for its high-quality manufacturing of door and window accessories, moulds, and related safety products, warmly received the Iraqi guests.   Foshan Xuanqing Factory has firmly established its reputation in the industry, owing to its state-of-the-art production technology and unwavering commitment to product quality. The aluminum corner connectors manufactured here are fabricated from premium-grade aluminum materials. These connectors come with a plethora of advantages, such as remarkable high strength, outstanding corrosion resistance, and an elegant appearance. They serve as essential components in guaranteeing the structural stability and aesthetic allure of doors and windows.   In addition to the above, the window and door anti-fall ropes presented by the factory were also a highlight. These anti-fall ropes are meticulously engineered with high-strength materials, ensuring reliable safety performance. They play a crucial role in preventing potential hazards caused by the accidental fall of windows and doors, providing an extra layer of security for users.   The person in charge of Xuanqing Factory emphasized that this visit by the Iraqi customers is of great significance. It not only reflects the international recognition of the factory's products and technologies but also offers a precious opportunity for further cooperation and communication. The factory will continue to uphold the principle of quality supremacy, constantly improve product quality and service levels, and strive to provide even better products and services to customers both domestically and internationally. It is believed that through this visit, the cooperation between Foshan Xuanqing Factory and the Iraqi customers will reach new heights, jointly driving the development of the door and window accessories, mould manufacturing, and safety product industries.      

Door and Window Glue - injected Corner Brackets: Ensuring Stability, a Quality Choice In modern architecture, door and window glue - injected corner brackets play a crucial role in the stability of doors and windows. They are mainly made of high - strength alloy materials or engineering plastics, which inherently possess excellent strength and toughness. Through advanced and precise processing techniques, the corner brackets have a compact and reasonable structure, perfectly adapting to doors and windows. From a mechanical perspective, the glue - injected corner brackets establish a stable triangular support system at the joints of doors and windows. In the daily use of doors and windows, whether it is the frequent opening and closing vibrations or the exposure to wind pressure and gravity, the corner brackets can evenly distribute the forces by virtue of their structure, avoiding excessive local stress. For example, in high - rise residential buildings, when strong winds howl, the glue - injected corner brackets can effectively resist the wind pressure, preventing the doors and windows from deforming or loosening, and ensuring the safety of residents. The glue - injection process further enhances their stability. High - quality sealant is injected into the gaps between the corner brackets and the door or window profiles. It not only fills the voids but also acts like a powerful bond, tightly adhering the two together. After the sealant cures, it forms a unified and solid whole with the corner brackets and profiles, enhancing the structural rigidity. Even after experiencing temperature changes and humidity fluctuations, the connection between the corner brackets and the profiles remains firm, consistently maintaining the stability of the doors and windows.

The Process of Glue - injected Corner Brackets for Doors and Windows Glue - injected corner brackets for doors and windows are a type of connection and fixing materials widely used in modern architecture. Through a special glue - injection process, they provide a more stable and reliable guarantee for the installation and use of doors and windows. The following is a detailed introduction to the characteristics of glue - injected corner brackets for doors and windows. Strong structural stabilityThe glue - injected corner brackets for doors and windows are made of high - strength alloy materials or engineering plastics through precise processing techniques. With a compact structure, they can provide strong support at the joints of doors and windows, ensuring the stability and safety of doors and windows during use. Excellent weather resistance and corrosion resistanceGlue - injected corner brackets for doors and windows are usually made of materials with strong weather resistance and good corrosion resistance. They can effectively resist the erosion of harsh weather conditions such as sunlight, rain, acid rain, and salt spray, ensuring a long service life. Superior sealing performanceDuring the installation process of glue - injected corner brackets, a specific sealant is used for filling. This sealant has good elasticity and adhesion, which can effectively fill the gaps between the door and window frames and the wall, preventing the penetration of air, moisture, and dust, and improving the sealing performance of doors and windows. Environment - friendly and energy - savingThe use of glue - injected corner brackets can reduce the energy consumption of doors and windows. By improving the sealing performance of doors and windows, the loss of hot and cold air is reduced, thus achieving energy - saving effects. At the same time, high - quality sealant materials do not release harmful substances, which are harmless to the environment and human health. 注胶角码密封胶的选择和使 门窗注胶角码在不同气候条件下

In the heart of the United States, a remarkable transformation took place in a student apartment complex. The goal was to enhance the living experience for students while ensuring durability and safety.   The student apartments, which housed hundreds of students from various universities, were in need of an upgrade. The management team decided to invest in high-quality corner codes to improve the functionality and aesthetics of the doors and windows.   These corner codes, specifically designed for student housing, were made from durable materials that could withstand the rigors of daily use. They provided a secure connection between the frames of the doors and windows, ensuring that they remained stable and in place.   The installation process was seamless. The construction crew worked efficiently to install the corner codes, minimizing disruption to the students' daily lives. In no time, the apartments were transformed.   The students noticed the difference immediately. The doors and windows now opened and closed smoothly, without any rattling or drafts. The enhanced stability also provided a greater sense of security.   Moreover, the corner codes added a touch of modernity to the apartments. Their sleek design complemented the overall aesthetic of the complex, making it more appealing to prospective students.   This case study serves as a testament to the power of small but significant improvements. By investing in corner codes, the student apartment complex was able to provide a better living environment for its residents, enhancing their college experience.   In conclusion, the use of corner codes in American student apartments is a smart investment that can have a significant impact on the quality of life for students.

In the world of construction and architecture, finding reliable and efficient solutions is crucial. The use of high-quality door and window corner codes has proven to be a game-changer in one of our recent projects.   The project in question was a large-scale residential complex. The architects and builders were looking for a solution that would not only ensure the structural integrity of the doors and windows but also enhance the aesthetic appeal. That's when our advanced door and window corner codes came into the picture.   These corner codes are made from premium materials, ensuring durability and resistance to wear and tear. They are designed to fit perfectly with different types of doors and windows, providing a seamless connection.   During the installation process, the ease of use of these corner codes was immediately apparent. The construction team was able to install them quickly and accurately, saving valuable time and effort. The precision engineering of the corner codes ensured that there were no gaps or misalignments, resulting in a flawless finish.   The impact on the overall look and feel of the residential complex was remarkable. The doors and windows looked sleek and modern, adding to the aesthetic appeal of the buildings. Moreover, the enhanced structural stability provided by the corner codes gave the residents a sense of security.   In conclusion, the use of our door and window corner codes in this project was a resounding success. It demonstrated the power of innovative solutions in transforming construction projects and delivering exceptional results. Whether it's for residential or commercial applications, these corner codes are a must-have for anyone looking for quality and reliability.