
Recently, extreme weather events have been occurring frequently worldwide: persistent heavy rainfall in southern China, record-breaking heatwaves across parts of the United States and Canada, and high temperatures combined with humidity in Japan and South Korea. Although cold storage facilities are typically located indoors, high temperature and humidity can still intensify heat exchange and increase air moisture levels, accelerating wear on door components and reducing their sealing performance. If doors become loose, deformed, or corroded, leading to leaks, this may result in increased energy consumption at best, and at worst, spoilage of food and pharmaceuticals, causing immeasurable losses.
In such cases, the sealing performance and structural stability of cold storage doors become critical to ensuring effective temperature control. Among these, seemingly insignificant components like handles and hinges are actually key elements that affect the door’s airtightness, energy efficiency, and service life.
Handles and Hinges: The Core Guarantee for Cold Room Door Sealing
Handle: Responsible for securing and operating the door, it is a key component ensuring the cold storage’s airtightness and ease of operation.
Hinge: Supports the weight of the door and maintains a stable structure even after repeated opening and closing, preventing sagging or deformation to ensure long-lasting and reliable sealing performance.
Choosing high-performance hardware with features such as corrosion resistance, forced tightness, and fine adjustment can effectively address common issues like seal aging and cold air leakage caused by extreme climates.
Kunlong Industrial introduces the following high-performance handle and hinge products, ensuring stable and efficient operation of cold storage systems:
SK1-840 Compression Handle
- Made of stainless steel with excellent corrosion resistance, effectively preventing the handle from rusting in high-humidity environments and extending the equipment’s service life.
- The accessory has a maximum stroke of 47 mm, accommodating door panels of varying thicknesses to ensure tight sealing and reduce the risk of cold air leakage.
- 70-degree opening angle, suitable for space-constrained areas, enhancing ease of operation and efficiency.


SK1-903S Handle Latch
- Equipped with a compression clamping function that enhances door pressure and improves sealing performance.
- Connecting steel pipes enable multi-point synchronized locking, ensuring simultaneous sealing at multiple locations on large cold storage doors to prevent cold air leakage.
- Dual-height adjustment seat design accommodates various door structures, enhancing installation flexibility and sealing stability.
- Stainless steel material offers strong corrosion resistance, ensuring the equipment operates stably for extended periods even in harsh environments.


SK2-724 Convex Door Hinge
- The structural design for durability makes the product more robust, preventing loosening and deformation over extended use, ensuring stable and secure sealing of the door.
- Equipped with fine-tuning functionality to meet various sealing requirements and enhance cold storage sealing performance
- The lift design automatically raises the door when opening, preventing ground friction that could damage the door and extending its service life.
- The 180° large opening Angle makes it convenient to handle goods and improves work efficiency.


SK2-1460 Heavy Duty Hinge
- Aluminum alloy material, lightweight and rust-resistant, reduces door weight while extending product lifespan.
- Load-bearing structural design enhances hinge load capacity, effectively supporting heavy-duty cold storage doors and maintaining structural stability.
- Highly adjustable to accommodate various door panel thicknesses, ensuring a tight fit between the door and frame for enhanced sealing performance.
- Left and right opening options allow for versatile installation directions, enhancing equipment universality and flexibility.

