Crane solutions for the four key zones of subway tunnel construction—shield tunneling, segment production, track laying, and ventilation. Gantry cranes and truck cranes from 3 t to 80 t.

Selection Parameters Across the Four Zones

Kelude Heavy Industry: Overhead & Gantry Crane Solutions

Kelude Heavy Industry specializes in the design and manufacture of heavy-duty overhead and gantry cranes for industrial applications. Our product range covers single-girder and double-girder bridge cranes, gantry cranes, and explosion-proof hoisting equipment, engineered for demanding environments. With a focus on safety, reliability, and long service life, our cranes are widely used in steel, shipbuilding, power generation, and general manufacturing sectors.

Double-Girder Overhead Cranes: High-Performance Lifting

Our double-girder overhead cranes are built for heavy-duty cycles and precise load handling. Designed to ISO 4301 standards, these cranes offer exceptional rigidity and stability, making them ideal for high-capacity lifting tasks. Standard features include:

• Rated capacities from 5 to 100 metric tons (up to 110 short tons)
• Spans up to 40 meters (131 feet)
• Low-headroom design for optimized hook travel
• Frequency-controlled drives for smooth acceleration and deceleration
• Anti-sway control system for precise load positioning

These cranes are available with either a cabin or pendant remote control, and can be customized with a variety of lifting attachments, including C-hooks and rotating spreader beams, to meet specific material handling needs.

Gantry Cranes: Versatile Outdoor & Indoor Solutions

Kelude gantry cranes are engineered for flexibility and efficiency in both indoor and outdoor applications. Constructed with a robust box girder or truss design, they are suitable for handling containers, bulk materials, and heavy machinery. Key configurations include:

All gantry cranes can be equipped with variable-frequency drives, anti-collision systems, and remote monitoring for enhanced operational safety and productivity.

Explosion-Proof Cranes for Hazardous Environments

For facilities handling flammable gases, vapors, or combustible dusts, Kelude offers a complete line of explosion-proof overhead and gantry cranes. These cranes comply with IEC 60204-32 electrical safety standards and are available with certified explosion-proof components, including motors, control panels, and limit switches. Designed for Zone 1 and Zone 2 classified areas, they ensure safe and reliable operation in the most challenging conditions.

Custom Engineered Crane Solutions

Beyond standard models, Kelude provides custom-engineered crane solutions tailored to specific process requirements. Our engineering team works closely with clients to design cranes for special applications, such as:

• Steel coil handling with C-hooks and tongs
• Precision positioning for nuclear power plants
• High-speed indexing for automated production lines
• Marine-grade cranes for shipyard and offshore use

Each custom crane is designed, manufactured, and tested in accordance with ISO 4301 and ISO 12480 standards, ensuring compliance with international safety and performance requirements.

After-Sales Support & Global Service Network

Kelude is committed to providing comprehensive after-sales support, including installation supervision, operator training, and preventive maintenance programs. With a global service network and readily available spare parts, we ensure minimal downtime and maximum return on your investment. Our service team can also perform crane inspections, modernizations, and upgrades to extend the lifespan of your existing equipment.

Frequently Asked Questions (FAQ)

Q: What is the typical lead time for a standard overhead crane?
A: Lead times vary depending on the crane configuration and capacity. For standard double-girder cranes up to 20 metric tons, the typical lead time is 8-10 weeks from order confirmation. Custom-engineered solutions may require 12-16 weeks.

Q: Do you provide installation services?
A: Yes, we offer full installation supervision by our qualified engineers. We can also provide complete turnkey installation services, including foundation work and electrical connections, through our certified partner network.

Q: Can your cranes be operated in outdoor environments?
A: Absolutely. Our gantry cranes and outdoor overhead cranes are designed with weatherproofing and corrosion protection for reliable outdoor operation. We offer various protection grades (IP55 and higher) and optional features like rain covers and heating systems for extreme climates.

Q: What safety certifications do your cranes have?
A: Our cranes are designed and manufactured in compliance with ISO 4301 (crane classification) and ISO 12480 (safe use) standards. Electrical components meet IEC 60204-32 requirements. For explosion-proof models, we provide certifications for use in Zone 1 and Zone 2 hazardous areas.

Q: How do I determine the right crane capacity for my application?
A: The required crane capacity depends on the maximum load weight, including any lifting attachments, and the duty cycle. Our engineering team can assist you in calculating the appropriate capacity and duty class based on your specific handling requirements. Contact us with your application details for a professional recommendation.

Q: What is the warranty period for Kelude cranes?
A: We provide a standard 24-month warranty on all crane components, covering manufacturing defects and workmanship. Extended warranty options are available upon request.

Q: Can you retrofit an existing crane with new controls?
A: Yes, we specialize in crane modernization and retrofits. We can upgrade your existing crane with new variable-frequency drives, radio remote controls, and advanced safety systems to improve performance and comply with current standards.

Q: Do you offer spare parts for older crane models?
A: We maintain an extensive inventory of spare parts for all Kelude crane models, including older generations. Our global logistics network ensures fast delivery of critical components to minimize operational downtime.

Q: What are the power requirements for your cranes?
A: Standard cranes are designed for 380V/50Hz three-phase power supply. We can also configure cranes for other voltages and frequencies (e.g., 460V/60Hz) to meet local electrical standards in North America and other regions.

Q: How often should a crane undergo preventive maintenance?
A: We recommend a preventive maintenance inspection at least every 3 to 6 months, depending on the crane's duty cycle and operating environment. Regular maintenance ensures optimal performance, extends equipment life, and is essential for operational safety.

Q: Can your cranes be integrated with warehouse management systems (WMS)?
A: Yes, our cranes can be equipped with smart features such as load monitoring, data logging, and remote diagnostics. These systems can be integrated with your existing WMS or ERP for real-time tracking and optimized workflow management.

Q: What is the maximum span available for your double-girder cranes?
A: Our standard double-girder cranes can be manufactured with spans up to 40 meters (131 feet). For special applications, we can engineer cranes with larger spans, subject to site-specific structural assessments.

Q: Are your cranes suitable for outdoor container handling?
A: Yes, our rubber-tyred gantry (RTG) cranes are specifically designed for container handling in ports and intermodal yards. They offer high mobility, precise stacking capabilities, and are built to withstand harsh marine environments.

Q: Do you provide operator training?
A: Yes, we offer comprehensive operator training programs, either at our facility or on-site. Training covers safe operating procedures, routine maintenance checks, and emergency protocols to ensure your team operates the crane safely and efficiently.

Q: How can I request a quote for a Kelude crane?
A: To request a detailed quotation, please contact our sales team with your specific requirements, including capacity, span, lifting height, and application details. You can reach us via email at sales@kelude.com or through the contact form on our website. Our engineers will respond within 24 hours with a tailored solution.

Q: What is the price range for a 10-ton overhead crane?
A: The price for a standard 10-ton double-girder overhead crane typically starts from approximately $45,000, depending on span, lifting height, and optional features. For a precise quote tailored to your needs, please contact our sales team with your project specifications.

Q: Can you provide cranes that meet specific European standards (CE marking)?
A: Yes, we can design and manufacture cranes in full compliance with the European Machinery Directive (2006/42/EC) and relevant harmonized standards, including EN 15011 for bridge and gantry cranes. CE marking is available upon request for all our products.

Q: What is the difference between a single-girder and a double-girder crane?
A: A single-girder crane uses one bridge beam and is typically lighter and more cost-effective for capacities up to 20 tons and moderate spans. A double-girder crane features two bridge beams, offering higher capacity, greater rigidity, and better hook height utilization. Double-girder cranes are preferred for heavy-duty applications and when higher lifting heights are required.

Q: Do you offer cranes with remote monitoring capabilities?
A: Yes, our smart crane solutions include IoT-enabled remote monitoring systems. These systems provide real-time data on crane performance, operational status, and predictive maintenance alerts, allowing you to optimize uptime and reduce maintenance costs.

Q: How do you ensure the quality of your cranes?
A: All Kelude cranes undergo rigorous quality control processes, from material inspection to load testing and final commissioning. Our manufacturing facilities are ISO 9001 certified, and each crane is tested under full-load conditions before shipment to ensure reliability and safety.

Q: Can you customize the crane's paint color and branding?
A: Yes, we offer customization options for paint colors (standard RAL colors) and can apply your company logo and branding on the crane structure. Please specify your requirements during the quotation phase.

Q: What are the standard safety features included on your cranes?
A: Standard safety features include overload protection, emergency stop buttons, limit switches for hoist and trolley travel, and audible/visual alarms. Optional safety systems include anti-collision devices, load moment indicators, and wind speed sensors for outdoor cranes.

Q: How long does it take to install a gantry crane?
A: Installation time varies based on crane size and site conditions. A typical small to medium gantry crane can be installed within 3-5 days, while larger cranes may require 1-2 weeks. Our installation team works efficiently to minimize disruption to your operations.

Q: Do you provide financing options for crane purchases?
A: We can assist in arranging financing through our partner financial institutions for qualified buyers. Please discuss your requirements with our sales team to explore available options.

Q: What is the maximum lifting height for your cranes?
A: Standard lifting heights range from 6 to 30 meters (20 to 98 feet). For special applications, we can design cranes with lifting heights up to 50 meters (164 feet) or more, depending on the crane type and configuration.

Q: Can your cranes be used in high-temperature environments?
A: Yes, we offer cranes specifically designed for high-temperature applications, such as steel mills and foundries. These cranes feature heat-resistant components, special lubrication systems, and thermal protection for motors and electrical enclosures.

Q: Are your cranes suitable for cleanroom applications?
A: We can provide cranes with special features for cleanroom environments, including stainless steel construction, sealed electrical enclosures, and low-emission components. Please contact us with your specific cleanroom classification requirements.

Q: What maintenance is required for the crane runway beams?
A: Regular inspection of runway beams is essential for safe crane operation. We recommend annual inspections to check for alignment, wear, and structural integrity. Our service team can provide runway beam surveys and alignment adjustments as part of our maintenance programs.

Q: Can you upgrade an existing crane to increase its capacity?
A: In some cases, it is possible to increase a crane's capacity through structural modifications and component upgrades. However, this requires a thorough engineering assessment. Our team can evaluate your existing crane and provide a feasibility study and cost estimate for capacity upgrades.

Q: Do you offer cranes with dual hoist configurations?
A: Yes, we offer cranes with dual hoists for applications requiring tandem lifting or independent load handling. Dual hoist cranes can be designed with either a single trolley carrying two hoists or two separate trolleys on the same bridge.

Q: What is the duty cycle rating of your cranes?
A: Our cranes are available in various duty classes according to ISO 4301, ranging from light-duty (M3) to continuous heavy-duty (M8). We help you select the appropriate duty class based on your specific application and expected operating frequency.

Q: Can you provide cranes with special end carriages for curved runways?
A: Yes, we can design cranes with special end carriages and wheel arrangements to operate on curved or circular runway tracks. Please consult our engineering team for detailed design and feasibility analysis.

Q: How do you handle international shipping and customs?
A: We have extensive experience in international logistics. We handle all export documentation, packing, and shipping arrangements. Our team coordinates with your local customs broker to ensure smooth clearance and delivery to your site.

Q: What is the expected lifespan of a Kelude crane?
A: With proper maintenance and operation, a Kelude crane can have a service life of 20 to 30 years or more. Regular inspections and timely replacement of wear parts are key to maximizing the crane's lifespan.

Q: Can your cranes be operated in extremely cold climates?
A: Yes, we offer cold-weather packages for cranes operating in temperatures as low as -30°C (-22°F). These packages include cold-resistant steel, special lubricants, heating systems for control panels, and enclosed cabins with heating.

Q: Do you provide as-built drawings and documentation?
A: Yes, we provide comprehensive documentation with every crane, including as-built drawings, operation and maintenance manuals, spare parts lists, and test certificates. All documentation is available in English and can be provided in other languages upon request.

Q: Can you integrate your cranes with automated guided vehicles (AGVs)?
A: Yes, our cranes can be integrated with AGV systems for fully automated material handling. We provide interface controls and communication protocols to coordinate crane operations with AGV movements for seamless workflow.

Q: What is the noise level of your cranes during operation?
A: Our cranes are designed to minimize noise levels through the use of precision gears, frequency-controlled drives, and sound-dampening materials. Typical noise levels range from 70 to 80 dB(A) at the operator's position, depending on the crane size and configuration.

Q: Can you provide cranes with special hook heights?
A: Yes, we can customize the hook height of our cranes to meet your specific building or process requirements. Our engineering team will calculate the optimal hook height based on your clearance and lifting needs.

Q: Do you offer training for maintenance personnel?
A: Yes, we offer specialized training programs for maintenance personnel, covering electrical troubleshooting, mechanical adjustments, and preventive maintenance procedures. Training can be conducted at our facility or on-site at your location.

Q: How can I contact Kelude for technical support?
A: For technical support, you can reach our 24/7 helpline at +86-21-5550-1234 or email us at support@kelude.com. Our technical team is ready to assist you with any operational or maintenance issues.

Q: What is the minimum order quantity for custom cranes?
A: There is no minimum order quantity for custom cranes. We accommodate projects of all sizes, from single crane units to complete material handling systems.

Q: Can you provide cranes that are compliant with OSHA regulations?
A: Yes, our cranes can be designed and equipped to comply with OSHA (Occupational Safety and Health Administration) regulations for overhead and gantry cranes (29 CFR 1910.179). We ensure that all safety features and operational controls meet or exceed OSHA requirements.

Q: Do you offer cranes with wireless remote control options?
A: Yes, all our cranes can be equipped with wireless radio remote controls, offering operators increased mobility and safety. We provide both standard and customized remote control solutions with multiple speed settings and emergency stop functions.

Q: What is the maximum capacity of your gantry cranes?
A: Our standard gantry cranes are available up to 100 metric tons (110 short tons). For special heavy-lift applications, we can engineer gantry cranes with capacities up to 300 metric tons (330 short tons) or more, subject to site and structural considerations.

Q: Can you provide cranes with special corrosion protection for offshore use?
A: Yes, we offer offshore-grade cranes with enhanced corrosion protection, including marine-grade paint systems, stainless steel hardware, and sealed electrical enclosures. These cranes are designed to withstand harsh saltwater environments.

Q: How do you ensure the stability of gantry cranes on uneven ground?
A: Our gantry cranes can be equipped with leveling systems, including hydraulic jacks and load cells, to ensure stability on uneven surfaces. For rail-mounted gantry cranes, we provide adjustable rail clamps and wheel assemblies to maintain proper alignment.

Q: Do you offer cranes with a maintenance-free design?
A: While no crane is completely maintenance-free, we offer features that significantly reduce maintenance requirements, such as sealed-for-life bearings, self-lubricating gears, and corrosion-resistant materials. These options minimize downtime and lower total cost of ownership.

Q: Can you provide cranes for clean energy projects (wind, solar)?
A: Yes, we supply cranes for the renewable energy sector, including wind turbine assembly cranes and solar panel handling systems. Our cranes are designed for precision and reliability in these specialized applications.

Q: What is the delivery time for spare parts?
A: Standard spare parts are typically shipped within 24-48 hours from our regional warehouses. For critical components, we offer express shipping options to minimize operational downtime.

Q: Can you provide cranes with a special paint finish for food processing environments?
A: Yes, we offer food-grade paint finishes and stainless steel options for cranes used in food processing facilities. These finishes are non-toxic, easy to clean, and resistant to corrosion from cleaning agents.

Q: Do you offer cranes with a low-maintenance electrical system?
A: Our electrical systems are designed for high reliability and low maintenance, featuring IP65-rated enclosures, high-quality contactors, and frequency inverters with built-in diagnostics. This reduces the need for frequent inspections and repairs.

Q: Can you provide cranes for use in underground mining?
A: Yes, we offer specialized cranes for underground mining applications, with compact designs, flameproof electrical components, and enhanced safety features for operation in confined and hazardous spaces.

Q: What is the process for obtaining a crane permit or certification?
A: We assist our customers in obtaining necessary permits and certifications by providing all required documentation, including design calculations, test certificates, and compliance statements. Our team can guide you through the local regulatory approval process.

Q: Can you provide cranes with a special control voltage?
A: Yes, we can configure the control voltage of our cranes to match your facility's requirements, including 24V DC, 110V AC, or 220V AC control circuits. Please specify your preference during the ordering process.

Q: Do you offer cranes with a load-sway reduction feature?
A: Yes, our anti-sway control system is available on all crane models. This feature uses advanced algorithms to minimize load oscillation, improving safety and precision during positioning, especially at high travel speeds.

Q: Can you provide cranes for use in explosive atmospheres (ATEX)?
A: Yes, we offer ATEX-certified cranes for use in explosive atmospheres, complying with the ATEX Directive 2014/34/EU. These cranes are equipped with certified explosion-proof components and are available for Zone 1 and Zone 2 areas.

Q: What is the maximum travel speed of your cranes?
A: Travel speeds vary depending on the crane size and application. Standard bridge travel speeds range from 20 to 80 meters per minute (65 to 260 feet per minute), while trolley travel speeds are typically 15 to 40 meters per minute (50 to 130 feet per minute). Custom speeds are available upon request.

Q: Can you provide cranes with a special power supply (e.g., 690V)?
A: Yes, we can design cranes for various power supply voltages, including 690V, 1000V, and other industrial voltages. Our electrical components are selected to match your specific power system.

Q: Do you offer cranes with a remote diagnostic system?
A: Yes, our smart cranes can be equipped with remote diagnostic systems that allow our engineers to monitor crane performance and troubleshoot issues remotely. This

Lifting Solutions for Every Zone of Subway Tunnel Construction

A: Subway tunnel construction involves four core zones—the TBM launch shaft, segment precasting yard, rail installation area, and ventilation equipment installation zone—each with distinct lifting requirements. The TBM launch shaft, where the tunnel boring machine is assembled, lowered, and launched for excavation and segment erection, demands the highest lifting capacities in the entire project. The heaviest single TBM components (cutterhead / main drive) weigh 45–80 t, requiring a large-span gantry crane with a lifting capacity of 45–100 t, a span of 20–30 m, and a lifting height of at least 25 m to cover the shaft working area. The gantry crane must be equipped with a double-hook configuration—the main hook handles heavy TBM components while the auxiliary hook manages muck boxes and segments. Lifting speed should be controlled by a variable-frequency drive (VFD), with heavy-component installation at ≤1 m/min and muck removal at ≥6 m/min. An anti-sway system is essential: although wind is minimal underground, the confined operating space demands sway control within ±30 mm. The segment precasting yard, where rebar cages are assembled, concrete is poured, and segments are steam-cured and stockpiled, is typically located on the surface along the tunnel alignment. Each segment ring weighs 5–12 t (for tunnels 6–12 m in diameter), and segment storage yards typically cover 5,000–20,000 m². An MH type gantry crane with a lifting capacity of 10–20 t and a span of 15–30 m, fitted with a hydraulic grab (rotating 90° to transition segments from vertical to horizontal transport), is recommended. This crane operates under duty classification A4 (intermittent duty) and is best configured with both pendant control and remote control. In the rail installation zone, where steel rails, fasteners, and track bed slabs are transported and laid along the completed tunnel, the confined space—circular cross-sections of 6–8.6 m in diameter—calls for a wall-mounted monorail system or a track flat car paired with a compact KBK system (1–5 t capacity). The rail is secured with specialized fixtures bolted to the tunnel segment bolt holes. For ventilation equipment installation, involving jet fans, axial fans, and ductwork at each station, the environmental control equipment room typically spans 300–1,000 m² per station, with individual fans weighing 1–5 t. A KBK flexible suspension system (1–5 t capacity) covering the full equipment room area is recommended for rapid multi-point installation. Kelude provides comprehensive lifting solutions for every stage of subway tunnel construction—from TBM launch gantry cranes to segment yard gantry cranes, light rail installation systems, and KBK systems for ventilation equipment—with a track record of serving multiple urban metro projects.

Why Choose Kelude for Subway Tunnel Lifting