Foshan Dalong Chain
Equipments Sales Co., Ltd.
Equipments Sales Co., Ltd.
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From high-traffic terminal escalators to vertical elevator systems in international departure halls, our chain block accessories are engineered to meet the demanding operational cycles of modern airports worldwide.
International airports are among the most demanding environments for mechanical infrastructure in the world. With passenger volumes at major hubs routinely exceeding 50 million travelers annually, the escalators and elevators that move people through terminals, concourses, and boarding gates operate under relentless load cycles — often 18 to 24 hours per day, 365 days a year.
Chain block accessories — including drive chains, return chains, compression chains, turning chains, slide blocks, screws, and fastening nuts — form the mechanical backbone of every escalator and elevator system deployed in these environments. A failure in any one of these components can trigger immediate service disruption, create serious passenger safety risks, and generate significant operational and reputational costs for airport operators.
Unlike commercial buildings or metro stations, international airports present a uniquely complex set of mechanical challenges. Understanding these challenges is essential to selecting the right chain block accessories for each application zone.
Airport escalators in peak zones such as immigration halls and boarding gates may carry thousands of passengers per hour. Drive chains and step chains must maintain structural integrity and dimensional stability under continuous tensile stress without elongation or fatigue cracking.
From the heated interiors of Arctic-climate airports to the humid, salt-laden air of coastal tropical hubs, chain block accessories must resist corrosion, thermal expansion, and lubricant degradation across a wide operational temperature spectrum.
Aviation infrastructure is subject to the most rigorous safety certifications globally — including EN 115, ASME A17.1, and GB 16899 standards. Chain accessories must meet or exceed these specifications, with full traceability of materials and manufacturing processes.
Airport operators typically have extremely limited maintenance windows — often just 2 to 4 hours overnight — during which all inspections, lubrication, and parts replacement must be completed. This demands components with long service intervals and rapid installation compatibility.
Major international airports commonly operate escalators and elevators from multiple OEM brands — Otis, Schindler, KONE, Mitsubishi, Hitachi, and Fujitec — simultaneously. Procurement teams require a supplier capable of cross-brand compatibility and consolidated spare parts management.
Many airport terminals have been in operation for 20 to 40 years, housing escalator and elevator systems for which original manufacturer support has been discontinued. Custom manufacturing of non-standard, legacy, and discontinued chain components is a critical procurement requirement.
The escalator drive chain is the primary power transmission component linking the main drive sprocket to the step chain system. In high-density concourse environments, premium-grade drive chains with precision pitch tolerances of ±0.05mm and hardened pin surfaces are essential to prevent premature wear and maintain smooth, vibration-free passenger movement.
Airport underground people-mover connections and inter-terminal transit links frequently employ long-run escalators with complex return path geometries. Escalator return chains and turning chains must accommodate tight bend radii while maintaining consistent tension distribution, preventing chain derailment and reducing noise transmission through structural floors.
Modern airport terminal buildings increasingly feature multi-story mixed-use structures integrating retail, hospitality, and transport functions. Elevator door slide blocks, precision screws, and locking nuts in these systems must deliver consistent door alignment and closure force across thousands of daily operations, while meeting fire-rated door assembly standards.
Airport multi-level parking facilities and below-grade baggage handling infrastructure rely on compression chains in escalator systems designed to manage both upward and downward passenger flows simultaneously. These chains must resist buckling forces and maintain geometric stability under variable load reversals unique to bidirectional escalator operation.
Airports are mandated to provide comprehensive accessibility infrastructure under international disability accommodation regulations. Elevator systems serving accessibility functions require the highest-precision slide blocks, screws, and nuts to ensure door timing, gap tolerances, and force limitations comply with ADA, BS 8300, and equivalent international accessibility standards.
Global hub airports such as those in Singapore, Dubai, Frankfurt, and Hong Kong operate hundreds of escalator and elevator units from multiple manufacturers. A single qualified supplier capable of providing certified chain block accessories compatible with Otis, KONE, Schindler, Mitsubishi, and Hitachi systems simultaneously represents an enormous procurement efficiency advantage.
The global airport infrastructure investment market is projected to exceed USD 1.7 trillion over the next decade, driven by new terminal construction in Asia-Pacific, Middle East expansion programs, and major retrofit projects across aging European and North American airports. This investment wave is reshaping the demand profile for chain block accessories in several significant ways.
Airport operators are rapidly adopting IoT-enabled condition monitoring systems that track chain elongation, vibration signatures, and lubrication status in real time. Next-generation chain block accessories are being designed with embedded sensor compatibility, enabling predictive replacement scheduling that eliminates unplanned downtime.
Airport sustainability mandates are driving demand for chain components manufactured from recycled-content steel alloys and produced using low-carbon manufacturing processes. Extended service life specifications — targeting 50,000+ operating hours — further reduce lifecycle material consumption and waste generation.
The expansion of global e-commerce logistics infrastructure is enabling airport maintenance teams to source certified chain block accessories from specialized global suppliers with 24–72 hour delivery windows to virtually any international location, reducing the need for large on-site inventory buffers.
New plasma nitriding, DLC (diamond-like carbon) coating, and nano-ceramic surface treatment technologies are extending chain pin and bushing wear life by 3–5× compared to conventional heat-treated components, directly addressing the high-cycle demands of airport escalator environments.
Foshan Dalong Chain Equipments Sales Co., Ltd. was established in January 2007 (formerly known as Nanhai Yanbu Seelee Elevator Parts Factory, founded in 1990).
Throughout its operational history, the company has steadfastly upheld the principles encapsulated in its service motto, "Customer First, Quality First," earning widespread acclaim across its diverse client base. This commendable reputation has facilitated partnerships with numerous prestigious clients spanning Europe, America, Southeast Asia, the Guangdong-Hong Kong-Macao Greater Bay Area, and Taiwan.
Among these esteemed clients are industry leaders such as Otis, Schindler, Hitachi, Kone, Mitsubishi, Fuji, and MTR Singapore, all of whom have recognized the company's commitment to excellence and reliability. (It is worth mentioning that we are KONE's global parts strategic cooperative supplier.)
Our company operates extensive production facilities totaling over 4,500 square meters located in Suzhou, complemented by additional factories in Shanghai and Nantong. These sites are outfitted with advanced manufacturing equipment and staffed by teams of seasoned professionals committed to efficient production and the delivery of high-quality products. We maintain a rigorous quality control system to ensure each product adheres to international standards. With a wealth of import and export experience, our products are currently exported to over 100 countries.
At our Foshan office, the warehouse is well-stocked with a substantial inventory of commonly utilized spare parts to guarantee ample availability. Additionally, our delivery sector is supported by an effective logistics system, ensuring the swift and punctual distribution of spare parts to our clientele. Simultaneously, we boast a seasoned sales team and a cadre of expert elevator engineers, both fully equipped to furnish our customers with rapid and precise solutions alongside comprehensive after-sales services.
For over a decade, Foshan Dalong Chain Equipments Sales Co., Ltd. has upheld a development policy characterized by pragmatism, self-reliance, and innovation. Specializing in the sales of major brand elevator components, we offer an integrated approach that encompasses sales, manufacturing (custom manufacturing of parts for elevators and escalators that are non-standard, discontinued, or of older models) and engineering technical consulting. We provide our clients in Europe, America, Southeast Asia, the Guangdong-Hong Kong-Macao Greater Bay Area, and Taiwan with comprehensive pre-sales technical consultations, a reliable supply of high-quality parts, and exemplary after-sales service.
Our production facilities across Suzhou, Shanghai, and Nantong are equipped with precision CNC machining centers, automated chain assembly lines, and comprehensive quality inspection laboratories — ensuring every chain block accessory shipped to international airport clients meets the most stringent dimensional and metallurgical specifications.
Our chain block accessories are certified and approved for use by the world's foremost elevator and escalator manufacturers, making us the preferred supply chain partner for international airport procurement and maintenance programs across every major global region.
Explore our comprehensive portfolio of precision-engineered chain block accessories, each designed and manufactured to satisfy the operational intensity, safety standards, and multi-brand compatibility requirements of international airport escalator and elevator systems.
