Explore our industrial-grade, boltless keyhole interlocking structures optimized for heavy load capacity, stability, and zero-tool rapid deployment.
The global demand for modular storage structures is shifting from traditional, labor-intensive bolted systems to modern boltless options. As logistics nodes, industrial workshops, and residential e-commerce fulfillments surge globally, procurement managers face strict performance benchmarks. The gourd-hole rack—often designated as a keyhole or interlocking rivet rack—has emerged as a foundational structural solution for high-density, versatile warehousing.
Enterprise procurement departments, particularly in North America, Western Europe, and Australia, rely on gourd-hole shelving due to its unique mechanical setup. By utilizing cold-rolled steel posts punched with precision taper slots, the design allows rivets to slip seamlessly into place and lock under gravity. This completely eliminates structural hardware overhead, speeding up field assembly by up to 70% and lowering shipping volume (CBM) for long-haul logistics.
Tailored engineering approaches designed to resolve load distribution, space optimization, and safety compliance across diverse commercial environments.
Take a look inside our 32,000 m² state-of-the-art facility. We integrate automated roll-forming, continuous cold punching, and electrostatic powder coating lines.
A trusted manufacturer with deep industry expertise, providing reliable B2B supply chain solutions globally.
Founded in 2016, Ningbo Shibang Storage Rack Co., Ltd. is a leading enterprise specializing in the design, manufacture, and global distribution of heavy-duty industrial warehouse racking and light-duty commercial keyhole shelving systems. With a modern 32,000 m² manufacturing facility, we leverage 12 years of industry experience and 8 years of direct export expertise to serve global clients. Our annual export revenue has reached $18 million.
Quality and structural integrity are core to our manufacturing philosophy. Supported by a dedicated quality control team of 35 QA/QC inspectors, we perform comprehensive multi-stage checks. This includes Ultrasonic Testing (UT) for weld seams, load-bearing stress analysis, coating thickness verification, and raw material tensile testing to ensure every batch complies with international safety standards.
Operating with a robust international trade setup, our primary markets cover North America, Western Europe, Southeast Asia, and Australia. To maintain consistent production cycles and reliable raw material supply, we partner with over 850 verified supply chain vendors. Our R&D team of 22 structural and mechanical engineers offers extensive customization options, including tailored load capacities, custom powder-coating colors, and seismically engineered profiles. Over the past year, we launched 140 new products and optimized structural components to meet changing market demands.
Our diverse client portfolio spans 3PL logistics providers, automated distribution centers, retail mega-warehouses, and heavy manufacturing facilities. Through strategic partnerships, we guarantee fast material turnarounds and reliable product delivery even during peak shipping seasons.
Ningbo Shibang remains focused on engineering and material performance improvements. Our product development pipeline is directed by two main requirements: reducing weight without sacrificing load-bearing capacity, and implementing environmentally responsible manufacturing practices.
By using micro-alloyed, high-strength low-alloy (HSLA) steel sheets, we have reduced overall product weight by 12% while keeping structural bending stiffness stable. Additionally, we are updating our automatic roll-forming lines to support multi-profile variations, allowing us to produce customized shapes with shorter turnaround times.
On the finish coating side, we have transitioned to zero-VOC, heavy-metal-free thermosetting powder coatings. This update helps our clients meet their internal environmental and safety standards while providing excellent resistance to rust and oxidation in humid environments.
Ensuring our storage products meet regional structural safety certifications and shipping requirements.
For seismically active zones in North America and Southeast Asia, we customize beam shapes and upright post dimensions to satisfy local building codes and seismic criteria.
We supply complete mill test certificates (MTC) with our raw steel materials, verifying yield strength, chemical composition, and performance consistency.
We pack our products using high-density flat-pack cardboard boxes on reinforced pallets. This structure minimizes damage during shipping and maximizes container volume utilization.
Expert answers to help you navigate structural engineering details, custom manufacturing options, and bulk procurement logistics.
We primarily use cold-rolled carbon steel coils (such as Q235B grade) that meet ASTM and EN standards. For highly demanding industrial applications, we also offer high-strength steel grades to reduce structural weight while maintaining high load limits.
The keyhole design uses tapered slots along the upright frames. When the rivet at the end of the beam is placed into the slot and pressed down, it wedges into the narrower end of the keyhole. The weight of items on the shelf increases this locking tension, creating a stable, rigid joint without requiring bolts or fasteners.
Our structural engineering team offers customization for dimensions (height, width, depth), steel thickness, load capacity ranges (up to 150 kg per tier), custom epoxy powder coating colors (RAL matching system), and decking materials (MDF, particleboard, wire mesh, or steel panels).
Typical production cycles range from 20 to 30 days following order confirmation, depending on the customization required. Our factory operates automated forming and coating lines to ensure consistent output quality and delivery timelines.
Review our extended range of light-to-medium-duty storage racks engineered for household, retail, and commercial use.
Shibang Rack