10t Underhung Overhead Crane Export to Russia: Winning the Second Tender for a Gold Mine

Following the smooth and uninterrupted operation of two gantry cranes for 545 days, marking the success of their initial collaboration, a major gold mine in Russia’s Transbaikal region of Siberia launched a new tender process in early 2026, DAFANGCRANE successfully secured this follow-up order, distinguished by its precisely tailored solutions, rigorous adaptability to extreme cold environments, and highly efficient cross-border logistics services. Serving as critical maintenance equipment for the gold mine’s production line, the custom-engineered 10t LX underhung overhead crane not only resolved key challenges, such as limited headroom within the client’s facility and the demands of operating in sub-zero temperatures. But also, through its reliable end-to-end delivery process, it solidified the foundation of trust in Sino-Russian cross-border cooperation within the mining equipment sector. Furthermore, it has established a fully replicable, comprehensive solution model for other gold mining clients across Russia facing similar operational requirements.

Overcoming Spatial and Climatic Barriers: Why This Russian Gold Mine Chose DAFANFCRANE for a Second Tender

The client involved in this collaboration specializes in gold mining and advanced processing. The gantry crane they procured in their initial 2024 order operated flawlessly throughout the entire year, precisely meeting the high-intensity production demands of their gold mine. This success served as the fundamental premise for the client's decision to prioritize DAFANGCRANE in their subsequent tender for a gold mining enterprise, equipment reliability directly determines the extent of losses incurred due to downtime; thus, a single successful collaboration carries far more weight than extensive promotional campaigns.

For this second tender, the client, drawing upon the actual production realities and on-site operating conditions of their gold mine, put forward a set of even more rigorous customization requirements. These requirements were formulated in light of the constraints imposed by their aging processing facility, the extreme cold of the Siberian environment, the logistical challenges inherent to a remote inland mining region, and their core imperatives regarding cross-border procurement and the assurance of a smooth commissioning process. Consequently, the client faced four critical on-site challenges requiring immediate resolution—challenges that also represent the primary concerns for Russian mining clients when procuring lifting equipment:

1. Severe Space Constraints within the Facility: The gold processing plant is housed within an aging structure with a fixed layout and extremely limited spatial capacity. Every inch of floor space is already allocated for material storage and equipment placement, precluding the installation of additional floor-standing support columns. As a result, standard overhead bridge cranes cannot be installed, making an underhung overhead crane the only viable option to overcome this spatial constraint. Furthermore, operational “dead zones” exist along the periphery of the facility; if the lifting equipment fails to provide comprehensive coverage of the entire workspace, material transfer efficiency will suffer, indirectly leading to losses caused by production downtime.

Factory Environment Diagram-Dense Equipment Layout

Factory Environment Diagram-Limited Space

Factory Environment Diagram-Tight Spatial Constraints

2. Operational Challenges in Extreme Cold Environments: In the Transbaikal region, winter temperatures can plummet to an extreme low of -35°C. Under such conditions, standard carbon steel is susceptible to “cold embrittlement”—a phenomenon where the metal loses its ductility and becomes prone to brittle fracture under load. As cranes serve as critical load-bearing equipment, any operational failure can result in economic losses amounting to tens of thousands of dollars for every hour of downtime. Furthermore, extreme cold weather frequently leads to electrical component malfunctions and cable cracking, severely compromising the continuous operation of the equipment.

3. Logistics Challenges in Remote Inland Regions: The client’s mining site is situated deep within the Russian interior, far removed from major logistics hubs and lacking direct transport routes. Moreover, the crane components procured for this project are small in size and limited in quantity, making them unsuitable for conventional rail container transport (which entails multiple loading and unloading cycles, thereby increasing the risk of component damage). Consequently, a flexible and efficient road transport solution was required. Additionally, it was necessary to complete Russian EAC certification and customs clearance procedures in advance to mitigate the risks of port delays or cargo detention, thereby ensuring the equipment arrived on schedule without disrupting the gold mine’s production plan.

4. Requirements for Delivery and Operational Support: Given the remote geographical location of the mining site, the client’s operating personnel lacked prior experience in operating equipment in extreme cold environments. Should equipment commissioning fail or a malfunction occur without timely access to technical support, the production line would come to a complete standstill. Therefore, the client stipulated that the equipment must achieve “first-time commissioning success” and required the provision of comprehensive on-site training and robust after-sales support services.

Precision Spatial Adaptation: Underhung Overhead Crane Breaks Through Gold Mine Workshop Space Constraints

Addressing the critical issue of limited space within the client’s facility, we opted against utilizing standard, off-the-shelf equipment. Instead, based on a precise 1:1 replication of the facility blueprints provided by the client, we custom-engineered a series of LX 10t – S9m (0.6m + 9m + 0.6m) H9m A3-type underhung overhead crane. Throughout this process, our core objective was to “maximize floor space utilization and achieve the widest possible operational coverage,” thereby providing a precise solution to the client’s spatial constraints. This strategic approach was one of the key advantages that enabled us to stand out and secure the contract during the second round of bidding.

Gold processing plants are high-density operational environments where floor space directly dictates production efficiency. Conventional bridge cranes require floor-mounted support columns, which consume a significant amount of space needed for material storage. A requirement entirely incompatible with our clients’ needs. In contrast, the core advantage of the LX underhung overhead crane lies in its independence from ground support; it mounts directly onto the plant’s load-bearing roof structure, thereby completely liberating all floor space. This allows clients to maximize their floor layout for materials and production equipment, indirectly boosting overall production efficiency.

To resolve the challenge of “dead zones” during operations at the edges of a facility, we have implemented targeted optimizations in our equipment design. The core highlight of this approach is the “Ultra-Long End Extension” feature: in conventional overhead cranes, the travel range of the electric hoist is restricted to the area between the tracks, preventing it from reaching the facility’s perimeter and thereby rendering certain areas inaccessible for material handling. By designing a 0.6-meter extension at each end of the underhung overhead crane main beam, we enable the electric hoist to extend beyond the suspension points and reach the absolute edge of the facility. This ensures underhung overhead crane 100% operational coverage, guaranteeing the efficient utilization of every inch of floor space and eliminating the persistent problem of material handling dead zones.

Notably, the 9-meter span design aligns precisely with the centerline of the plant’s underhung overhead crane runway beams, requiring absolutely no structural modification to the facility (as the client’s plant offered no tolerance for such alterations). This approach not only saved on renovation costs but also prevented any disruption to production operations during the modification process. Furthermore, the main girder features a lightweight design, while fully guaranteeing load-bearing capacity, thereby meeting the demands of continuous operation at work class A3. Underhung overhead crane simultaneously reduces the structural load on the roof, making it ideally suited to the structural characteristics of older industrial facilities.

Underhung Overhead Crane Production Drawing 1

Underhung Overhead Crane Production Drawing 2

Underhung Overhead Crane Production Drawing 3

Extreme Cold Engineering Upgrade: Overcoming -35°C Cold Brittleness for Year Round Operational Stability

The severe cold of Siberia’s Transbaikal region stands as the “number one enemy” of crane operations—and one of the core criteria of greatest concern to our Russian gold mining clients when procuring equipment. For gold mining operations, winter represents a critical period for both extraction and processing; should equipment fail due to extreme cold, the resulting economic losses would be irreparable. Drawing upon our extensive experience in customizing equipment for extreme-cold environments, we have subjected this LX 10t underhung overhead crane to a comprehensive, multi-dimensional upgrade tailored specifically for such conditions. From materials and manufacturing processes to electrical systems and rigorous testing, we have taken every measure to completely eliminate potential risks of equipment failure in extreme cold environments.

1. Upgraded Low-Temperature Materials: The main girder is constructed from a specially formulated Q355D low-temperature steel. This steel undergoes a specialized low-temperature quenching process, enabling it to maintain exceptional toughness and fatigue resistance even in environments as cold as -40°C. This completely resolves the “cold brittleness” issue inherent in standard carbon steel. The underhung overhead crane is capable of sustaining a rated load of 10 tons over extended periods, meeting the continuous operational demands of work class A3 applications in gold mines, and ensuring that the equipment remains free from fractures or deformation during extreme low-temperature winter weather.

2. Comprehensive Non-Destructive Testing (NDT): All critical load-bearing welds undergo a dual inspection process—combining ultrasonic testing with radiographic testing, to meticulously screen for internal defects point by point. Concurrently, core components. The main girder of the underhung overhead crane and the electric hoist are subjected to low-temperature load testing to ensure stable operation even under extreme cold conditions, thereby eliminating the risk of equipment failure caused by component defects.

3. Arctic-Grade Electrical Protection: Equipped with specialized cold-resistant cables and utilizing low-temperature-resistant insulating materials, the system ensures reliable signal transmission and current conduction in environments as cold as -35°C, thereby preventing cable cracking and insulation detachment caused by freezing. Furthermore, heating compensation elements are integrated into the control cabinet to monitor internal temperatures in real time; when the temperature drops below -20°C, the heating system automatically activates to prevent electronic components from malfunctioning due to extreme cold, ensuring precise equipment control and timely response while preventing downtime caused by electrical failures.

Furthermore, we proactively obtained the Russian EAC certification (Customs Union certification) in advance. This ensures that our equipment complies with Russia's safety standards for specialized equipment, thereby facilitating smooth customs clearance. A crucial guarantee that has enabled us to earn the trust of our Russian clients. For foreign trade procurement involving Russia, regulatory compliance is a fundamental prerequisite; equipment lacking EAC certification cannot enter the Russian market, let alone be deployed in mining operations.

Strategic Logistics Solutions: Eliminating Transshipment Risks to Ensure On Time Delivery

In light of the client’s specific circumstances, characterized by a small quantity of compact parts and the absence of direct logistics routes, we opted to forgo the traditional railway transit method (which entails multiple stages of handling, risks damage to parts, and involves lengthy transit times). Following a comprehensive assessment of the actual landscape of cross-border logistics between China and Russia, we devised a bespoke solution: a combination of land transport to the Chinese border followed by onward transfer via trucks within Russia. This tailored approach not only aligns with standard logistics principles but also precisely accommodates the specific characteristics of the parts, thereby ensuring that the equipment components arrive at the mining site intact and on schedule, effectively resolving the client’s logistics challenges.

The underhung overhead crane components procured for this shipment are small in size and limited in quantity; consequently, they do not require transport via large shipping containers. Instead, we utilize small, specialized cargo trucks to facilitate precise “point-to-point” delivery, thereby mitigating the risk of part damage typically associated with multiple stages of loading and unloading. The specific logistics workflow is outlined below:

• Loading takes place at our factory, utilizing packaging designed to be waterproof, rust-proof, and shock-resistant (individual components are separately wrapped and encased in protective foam to prevent damage from moisture, impact, or low temperatures during transit).
• Dedicated trucks transport the shipment directly to the Manzhouli border port in China, where local freight carriers take over to move the goods to the bonded zone for customs clearance.
•  Following customs clearance, the Russian client arranges for dedicated trucks to transport the shipment directly to their mining site. The entire journey features real-time visual tracking, with weekly updates provided to the client regarding key logistics milestones, ensuring they remain fully informed of the equipment’s transport status at all times.

Compared to traditional rail transport, this solution offers three core advantages:

• Flexible and Efficient: Tailored to the characteristics of small-sized parts, it eliminates the need to wait for container consolidation; parts production and packaging are completed within 30 days of contract signing, followed by cross-border transport within 7 days, ensuring the equipment arrives on schedule without disrupting the client’s production plans.
• Safe and Reliable: The entire process involves only three loading and unloading stages, thereby minimizing the risk of part damage and ensuring that the equipment components arrive at their final destination in pristine condition.
• Controllable Costs: It avoids the multi-tier transit fees associated with traditional rail transport; furthermore, by leveraging long-standing partnerships with logistics providers, we secure preferential cross-border shipping rates, thereby generating significant logistics cost savings for our clients.

Full Process Control for One Time Commissioning Success

To ensure the timely and high-quality delivery of the equipment, we have activated a “VIP Project Green Channel.” This initiative entails comprehensive, end-to-end oversight of every stage. Including production, testing, and installation, while also incorporating the use of specified materials. This approach allows the client to clearly witness our manufacturing capabilities and service standards, thereby further reinforcing mutual trust.

1. Production Control: We have established a dedicated production team to prioritize the allocation of raw materials and manufacturing equipment. Production is conducted in strict adherence to custom-engineered drawings, with the manufacturing of the underhung overhead crane main girder being fully visualized throughout the entire process. From raw material cutting and welding to surface grinding, ensuring that every single stage undergoes specialized quality inspection. Furthermore, we have optimized the production schedule to complete the manufacturing and assembly of the underhung overhead crane components within one month, ahead of schedule, while strictly maintaining the highest quality standards.

2. In-house Testing: Upon completion of component manufacturing, a comprehensive suite of tests. Including no-load, static-load, and dynamic-load testing, is conducted to ensure that all performance parameters of the equipment meet the specified requirements. Concurrently, the electrical and braking systems of the underhung overhead crane undergo rigorous and iterative debugging to eliminate any potential faults. Once testing is completed, a detailed test report is generated and submitted to the client for confirmation.

3. On-site Installation and Commissioning: Shortly after New Year’s Day in 2026, during the coldest season in Siberia (with temperatures plummeting to -32°C), we dispatched two senior installation engineers, both holding international certifications, to the client’s mining site to conduct comprehensive on-site installation and commissioning. Taking into account the specific environment of the client’s facility, the engineers precisely identified the optimal installation points and executed the installation of the underhung overhead crane in strict compliance with industry standards. Furthermore, to address the extreme cold, they performed a secondary round of equipment calibration to ensure stable operation under low-temperature conditions. Ultimately, the equipment successfully passed inspections by both the client and local special equipment authorities, enabling it to be put into production that very same day—three days ahead of the client’s schedule, thereby saving the client significant costs associated with downtime.

4. On-site Training and After-sales Support: Upon the completion of installation and commissioning, our engineers conducted systematic training for the client’s five crane operators and two maintenance technicians. The training focused specifically on operational techniques for extreme cold environments, key points for routine inspections, and troubleshooting methods for common faults, ensuring that the client’s personnel could operate the equipment independently. Concurrently, we pledged to provide 24-hour online technical support and a 72-hour supply chain for spare parts. This commitment effectively alleviated the client’s concerns regarding the inconvenience of after-sales service in such a remote region, thereby providing a robust guarantee for the long-term, stable operation of the equipment.

Deliverables and Customer Recognition: The Strength of Repeat Business

The successful delivery of the LX 10t underhung overhead crane not only fully addressed all of the client’s requirements but also earned their high commendation through our professional customization capabilities, reliable product quality, and efficient service standards. This achievement has further deepened our bilateral partnership and laid a solid foundation for our expansion into the Russian gold mining equipment market. The quantifiable results of this delivery are as follows:

1. Equipment Performance: Since being commissioned, the underhung overhead crane has operated continuously for three months without a single malfunction. It has demonstrated stable performance in extreme cold environments, with zero occurrences of issues such as cold embrittlement or electrical failure, thereby fully meeting the high-intensity production demands of the gold mine. Furthermore, the crane offers maximum operational coverage—eliminating “dead zones” within the facility—and has boosted material transfer efficiency by 25%.

2. Delivery Efficiency: The entire process—from contract signing to equipment commissioning—was completed in just 42 days. This timeline was three days ahead of the client’s requested deadline and eight days faster than our standard delivery cycle, perfectly aligning with and fulfilling the client’s urgent production requirements.

3.  Deepened Partnership: Highly satisfied with this delivery, the client has signed a long-term cooperation agreement with us. This agreement explicitly designates us as the preferred supplier for all future crane procurement needs related to new production lines, marking a significant upgrade in our relationship—evolving from a one-time “repeat purchase” into a “long-term strategic partnership.”

Client Testimonial:

“Мы очень довольны подвесным мостовым краном LX 10t, предоставленным вашей компанией. Это оборудование идеально адаптировано к суровым арктическим условиям и ограниченному производственному пространству нашего золотого прииска, при этом стабильно работает без каких-либо сбоев. Логистическая схема оказалась практичной и эффективной, гарантируя своевременную доставку оборудования на объект. Монтаж на месте и послепродажное обслуживание прошли на профессиональном уровне и были максимально внимательными к нашим потребностям. Надежная работа первого козловой кран и высококачественное обслуживание со стороны вашей компании стали клю reasons, по которым мы выбираем повторное сотрудничество. Мы с нетерпением ждем долгосрочного сотрудничества в будущем.”

—— Г-н Иван, Директор по закупкам крупного золотого прииска в Забайкальском крае России

If you represent a Russian heavy mining enterprise, such as a gold mine or metallurgical plant, and are currently facing challenges such as limited facility space, equipment adaptation for extreme cold environments, logistical difficulties in remote regions, or insufficient after-sales support; if you are in need of a reliable, custom-engineered overhead crane; and if you value a supplier’s extensive cross-border experience and the confidence affirmed by repeat business, we invite you to contact us!

With years of experience exporting mining equipment to Russia, we possess deep expertise in Russian EAC certification, cross-border logistics, and the specific requirements for customizing equipment for extreme cold climates. We offer personalized, one-on-one solution design; comprehensive end-to-end logistics support; on-site installation and commissioning services; and robust after-sales support. We also provide complimentary equipment selection advice and a customized quotation tailored to your specific needs.

Cindy

WhatsApp: +86 191 3738 6654

Email: cindywang@hndfcrane.com

I am Cindy, with 10 years of working experience in the crane industry and accumulated a wealth of professional knowledge. I have chosen the satisfying cranes for 500+ customers. If you have any needs or questions about cranes, please feel free to contact me, I will use my expertise and practical experience to help you solve the problem!