Corrosion-Resistant & Explosion-Proof Landfill Crane Types

Quick Summary: Kelude Heavy Industry provides crane configuration solutions for landfill and solid waste treatment facilities, covering all four key zones — waste filling, leachate treatment, biogas utilization, and capping/closure. With lifting capacities from 2 to 32 tons and spans from 8 to 30 meters, the total investment for plant-wide lifting equipment typically ranges from approximately $15,000 to $180,000. The landfill zone is equipped with grab cranes (5–16t) fitted with electric-hydraulic grab buckets; the leachate treatment area uses stainless steel anti-corrosion electric hoists (2–5t); the biogas power generation zone is recommended to use explosion-proof Ex d IIB T4 hoists (3–10t); and the capping membrane area is configured with LD type single-girder cranes (3–10t) — delivering full-process hoisting coverage from waste filling to resource recovery.

Crane Configuration for Solid Waste Treatment

Landfill Operations | Leachate Treatment | Biogas Utilization | Capping & Closure

Complete crane solutions for the four key zones of a landfill site: waste filling, leachate treatment, biogas utilization, and capping/closure.

Crane configuration for landfill and solid waste treatment — covering filling, leachate, biogas, and capping zones

Zone 1 — Landfill Operations

• Lifting capacity: 10t–32t, MH type / grab crane

• Waste / grab bucket transfer

• Outdoor / wind-resistant

• Corrosion-resistant / anti-seepage

Waste / Grab | Wind-resistant

Zone 2 — Leachate Treatment

• Lifting capacity: 3t–10t, anti-corrosion hoist

• Leachate / membrane equipment

• Corrosion / anti-corrosion

• Moisture / sealing

Leachate / Anti-corrosion | Sealing

Zone 3 — Biogas Utilization

• Lifting capacity: 3t–10t, explosion-proof hoist

• Biogas / Ex d explosion-proof

• Generator set maintenance

• Outdoor / sealed

Biogas Explosion-proof | Power Generation

Zone 4 — Capping / Closure

• Lifting capacity: 5t–16t, LD type / hoist

• Membrane / drainage installation

• Piping / equipment

• Outdoor / anti-corrosion

Capping / Drainage | Outdoor

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 cranes, gantry cranes, and electric hoists. Our equipment is engineered for demanding industrial environments, delivering reliable performance, precise load control, and long service life. From single-girder and double-girder bridge cranes to explosion-proof and low-headroom configurations, we provide tailored lifting solutions that meet international safety and quality standards.

Engineered for Performance and Safety

Every crane we produce is built to optimize your material handling workflow. We integrate advanced frequency control for smooth, accurate positioning, and our anti-sway technology ensures load stability even at high speeds. Safety is paramount: our systems feature multiple independent protection mechanisms, including overload limiters, emergency stops, and self-locking components, all designed to protect both personnel and equipment.

Customized Solutions for Diverse Industries

Our cranes are deployed across a wide range of sectors, including steel production, automotive manufacturing, warehousing, and power generation. We understand that every facility has unique requirements. Therefore, we offer extensive customization options—from span and lifting height to control systems and end effectors—ensuring a perfect fit for your specific application. Whether you need a double-girder crane for heavy loads or a compact single-girder solution for tighter spaces, Kelude delivers.

Rigorous Quality Assurance and Global Standards

Kelude's manufacturing processes adhere to stringent quality control protocols. Our cranes are designed and tested in accordance with ISO 4301 for crane classification and ISO 12480 for safe use, ensuring compliance with international norms. We use high-grade steel and premium components from global suppliers, and every unit undergoes comprehensive load testing and inspection before delivery. This commitment to quality ensures exceptional durability and minimal downtime.

Comprehensive After-Sales Support

We believe in building long-term partnerships with our clients. Our service extends beyond the initial sale, offering complete after-sales support including installation supervision, operator training, preventive maintenance programs, and rapid spare parts supply. Our global service network ensures that expert assistance is always within reach, maximizing the return on your investment and keeping your operations running smoothly.

Frequently Asked Questions

Q: What is the typical lead time for a standard overhead crane?
A: Lead times vary depending on the crane's specifications and customization level. For standard models, production typically takes 4-6 weeks from order confirmation. Custom-engineered solutions may require 8-12 weeks. We provide a detailed project schedule upon receiving your inquiry.

Q: Can you provide cranes that meet specific explosion-proof requirements?
A: Yes, we manufacture explosion-proof cranes designed for hazardous environments. These units feature specialized electrical components and anti-spark mechanisms, compliant with IEC 60204-32 standards. Please provide your specific area classification and required certifications for a tailored solution.

Q: What kind of warranty do you offer on your cranes?
A: We offer a comprehensive warranty covering all major components, typically for a period of 12 months from the date of commissioning or 18 months from the date of shipment, whichever comes first. This warranty covers defects in materials and workmanship under normal use and service.

Q: Do you offer installation and commissioning services?
A: Absolutely. Our team of experienced engineers can supervise or fully manage the installation and commissioning process on-site. We also provide comprehensive training for your operators and maintenance personnel to ensure safe and efficient crane operation.

Q: How do I determine the right crane capacity for my application?
A: The required capacity depends on the weight of your heaviest load, including any lifting attachments. We recommend adding a safety margin to account for dynamic loads. Our engineering team can assist you in calculating the optimal capacity, duty cycle, and configuration based on your specific material handling needs.

Q: What is the price range for a 10-ton overhead crane?
A: The price for a 10-ton overhead crane varies significantly based on span, lifting height, control system, and features like anti-sway or frequency control. A standard double-girder model might start around $66,600, but a fully customized solution with advanced automation could be higher. Please contact us with your detailed requirements for an accurate quotation.

Q: Can your cranes be integrated with existing factory automation systems?
A: Yes, our cranes are designed for seamless integration. We offer various control interfaces, including Profibus, Profinet, and EtherNet/IP, allowing easy connection to your PLC or higher-level manufacturing execution systems (MES). We can also provide remote monitoring and diagnostic capabilities.

Q: What maintenance is required for a Kelude crane?
A: Regular maintenance is crucial for safety and longevity. We provide a detailed maintenance manual with your crane. Recommended checks include daily inspections of wire ropes, hooks, and limit switches, along with periodic lubrication and checks of the electrical and braking systems. Our preventive maintenance contracts can handle all these tasks for you.

Q: Do you supply spare parts for cranes that are no longer in production?
A: We maintain a comprehensive inventory of spare parts for all our crane models, including older versions. Our parts department can quickly identify and ship the correct components to minimize your downtime. We also offer refurbishment services for existing cranes to extend their operational life.

Q: What are the main differences between single-girder and double-girder cranes?
A: A single-girder crane uses one bridge beam and is typically lighter, more cost-effective, and suitable for lower capacities (up to 20 tons) and moderate spans. A double-girder crane has two bridge beams, offering higher capacity (up to 100+ tons), greater rigidity, and better hook height utilization. The choice depends on your load requirements and facility layout.

Q: How do you ensure the quality of your cranes during manufacturing?
A: Our quality assurance process is multi-staged. We start with strict incoming material inspection, followed by in-process checks during fabrication and welding. Each crane undergoes a final load test at 125% of its rated capacity and a full functional test of all mechanisms and safety devices before it is approved for shipment.

Q: Can you help with the design of the crane runway and supporting steel structure?
A: Yes, our engineering team can provide design recommendations and load data for the crane runway beams and supporting columns. We can work with your structural engineer or provide complete runway design packages to ensure proper alignment, load distribution, and safe operation of the crane system.

Q: What is the maximum span available for your gantry cranes?
A: The maximum span for our gantry cranes depends on the capacity and the rail configuration. For lighter capacities, spans up to 40 meters are achievable. For heavier loads, the span is typically limited to around 30 meters to maintain structural integrity and cost-effectiveness. We can discuss your specific site constraints to find the optimal solution.

Q: Do you offer remote control options for your cranes?
A: Yes, we offer a variety of control options, including pendant stations, radio remote controls, and cabin operation. Our radio remote controls feature robust, industrial-grade designs with safety interlocks and proportional speed control for precise load handling. We can also implement automated or semi-automated control systems.

Q: What is the operating temperature range for your standard cranes?
A: Our standard cranes are designed to operate in ambient temperatures ranging from -20°C to +40°C. For applications in extreme cold or heat, we offer special configurations with cold-weather steel, heating elements for critical components, and high-temperature insulation to ensure reliable operation in harsh environments.

Q: How often should the wire rope on a crane be replaced?
A: The replacement interval for wire ropes depends on several factors, including usage frequency, load weight, and environmental conditions. As a general rule, the rope should be inspected regularly for broken wires, wear, and corrosion. It must be replaced when the number of visible broken wires exceeds the limits defined in ISO 4309 or when significant wear or deformation is detected.

Q: Can you provide cranes with special lifting heights?
A: Absolutely. We can design cranes with lifting heights up to 30 meters or more, depending on the application. For very high lifts, we use specially designed hoists and wire rope reaving systems to ensure stable and precise lifting. Please specify your required hook height, and we will engineer a solution to meet it.

Q: What kind of power supply is required for your cranes?
A: Our cranes are typically designed for standard three-phase AC power supplies, such as 380V/50Hz or 480V/60Hz. We can also accommodate other voltage and frequency configurations upon request. The main power supply is connected via a festoon system or conductor bar, and we provide all necessary electrical components and control panels.

Q: Do you provide training for crane operators?
A: Yes, we provide comprehensive on-site training for your crane operators and maintenance personnel. Our training covers safe operating procedures, daily inspection routines, load handling techniques, and basic troubleshooting. We aim to equip your team with the knowledge and skills to operate the crane safely and efficiently.

Q: How do you handle the logistics and delivery of a large crane?
A: We have extensive experience in managing the logistics of large crane shipments. We coordinate with specialized freight forwarders to handle sea or land transport, ensuring proper crating and securing of all components. For very large structures, we use modular shipping and provide detailed assembly instructions for on-site erection.

Q: What is the lifespan of a Kelude overhead crane?
A: With proper maintenance and operation, a Kelude overhead crane is designed for a service life of 20 to 30 years or more. The actual lifespan depends on the duty cycle, load factors, and the quality of the maintenance program. Our robust design and high-quality components ensure long-term reliability and performance.

Q: Can your cranes be used outdoors?
A: Yes, we offer outdoor-rated cranes with weatherproof enclosures, corrosion-resistant paint, and special protection for electrical components against rain, dust, and UV radiation. These cranes are ideal for applications in shipyards, steel yards, and outdoor storage facilities. We can also provide options for cold-weather operation.

Q: Do you offer financing options for crane purchases?
A: We can assist in connecting you with our financial partners who offer various leasing and financing solutions tailored to capital equipment purchases. This can help you manage your cash flow while acquiring the necessary equipment. Please contact our sales team to discuss the available options in your region.

Q: What information do you need to provide a quotation?
A: To provide an accurate quotation, we need the following information: required capacity (in tons), span (distance between rails), lifting height, duty class or operating frequency, control type (pendant, remote, cabin), and any specific environmental or application requirements. The more details you provide, the more precise our proposal will be.

Q: How do you ensure the safety of your cranes?
A: Safety is a core principle in our design and manufacturing. Our cranes are equipped with multiple safety devices, including overload limiters, buffer stops, anti-collision systems, and emergency stop buttons. We also adhere to strict international safety standards, such as ISO 12480, and conduct thorough safety testing on every unit before delivery.

Q: Can you provide a crane with a special paint color?
A: Yes, we can paint your crane in any RAL color to match your facility's branding or safety color codes. The standard finish is a high-quality epoxy primer and polyurethane topcoat, providing excellent durability and corrosion resistance. Please specify your desired RAL color code when placing your order.

Q: What is the difference between a bridge crane and a gantry crane?
A: A bridge crane (overhead crane) runs on overhead runway beams that are typically supported by the building's columns. A gantry crane has its own legs that run on ground-level rails, making it suitable for outdoor use or areas without an existing overhead structure. The choice depends on your facility's structure and application.

Q: Do you offer explosion-proof hoists?
A: Yes, we offer a complete range of explosion-proof electric hoists and cranes. These are designed for use in hazardous areas with potentially explosive atmospheres, such as chemical plants, oil refineries, and paint shops. They feature certified explosion-proof motors, control panels, and limit switches, compliant with international standards like IEC 60204-32.

Q: Can I visit your factory to see the cranes being manufactured?
A: We welcome factory visits. It is a great opportunity to see our manufacturing processes, quality control measures, and the quality of our products firsthand. Please contact us to schedule a visit, and our team will be happy to arrange a comprehensive tour of our production facility.

Q: What after-sales service do you provide?
A: Our after-sales service includes a dedicated support hotline, remote troubleshooting, and a global network of service technicians. We offer preventive maintenance contracts, emergency repair services, and a readily available stock of spare parts. Our goal is to ensure your crane operates reliably throughout its entire service life.

Q: How do you handle custom requests for crane modifications?
A: We have a flexible engineering team that can handle a wide range of custom modifications, from special dimensions and capacities to unique control systems and end effectors. We work closely with you to understand your specific needs and provide a cost-effective solution that meets all your requirements.

Q: What is the maximum capacity of your double-girder cranes?
A: Our double-girder cranes can be designed for capacities up to 150 tons or more, depending on the span and duty requirements. For ultra-heavy loads, we can also provide specialized heavy-lift cranes with capacities exceeding 300 tons. Please contact us with your specific load requirements to discuss the best solution.

Q: Do you provide cranes that comply with CE certification?
A: Yes, all our cranes can be designed and manufactured to comply with the European Machinery Directive and carry the CE mark. We ensure that our equipment meets all applicable essential health and safety requirements, including those for electrical equipment, noise, and ergonomics. We can provide the necessary documentation for your compliance records.

Q: Can you provide a crane with a special lifting mechanism, such as a rotating hook or a C-hook?
A: Yes, we can integrate various lifting attachments and end effectors, including rotating hooks, C-hooks, lifting beams, and vacuum lifters. These are designed to handle specific load types and improve efficiency. We work with you to select or design the appropriate attachment for your material handling process.

Q: What is the lead time for spare parts?
A: For standard spare parts, we typically ship within 24-48 hours from our central warehouse. For specialized or custom parts, the lead time may be longer, depending on the manufacturing schedule. We prioritize urgent requests to minimize your downtime and keep your operations running.

Q: How do I choose between a wire rope hoist and a chain hoist?
A: Wire rope hoists are generally faster, offer higher lifting heights, and are better suited for heavy-duty and frequent use. Chain hoists are more compact, cost-effective, and ideal for lighter capacities and lower lifting heights. The choice depends on your specific application, duty cycle, and budget.

Q: Do you offer cranes with a low-headroom design?
A: Yes, we offer low-headroom cranes specifically designed for facilities with limited vertical space. These cranes feature a compact hoist and trolley design that maximizes the hook height under the crane beam. This allows for efficient use of the available building height and is ideal for retrofitting existing facilities.

Q: Can your cranes be equipped with a weighing system?
A: Yes, we can integrate load cells and digital weighing systems into our cranes. This allows you to accurately weigh loads during lifting, eliminating the need for a separate weighing station. The system can display the weight on a screen, transmit data to your network, and be integrated with your inventory management software.

Q: What kind of maintenance contract do you offer?
A: We offer flexible preventive maintenance contracts tailored to your needs and usage. These typically include scheduled inspections, lubrication, adjustments, and replacement of wear parts. Our contracts can also cover emergency call-outs and priority service, ensuring your crane is always in optimal condition and compliant with safety regulations.

Q: Do you provide documentation and manuals in English?
A: Yes, all our cranes come with comprehensive documentation in English, including operation manuals, maintenance manuals, parts lists, and CE declarations of conformity. We can also provide documentation in other languages upon request. This ensures you have all the necessary information for safe operation and maintenance.

Q: Can you help with the installation of the crane runway?
A: Yes, we can provide installation services for the crane runway system, including the rails, rail clamps, and electrical conductors. Our team has the expertise to ensure proper alignment and installation, which is critical for the smooth and safe operation of the crane. We can work with your general contractor or manage the installation directly.

Q: What is the maximum lifting speed of your cranes?
A: The lifting speed can be customized to suit your application. Standard speeds range from 2 to 10 meters per minute for heavy loads. For lighter loads, we can provide higher speeds up to 20 meters per minute to improve cycle times. We use variable-frequency drives to provide smooth acceleration and deceleration, extending the life of the crane.

Q: Do you offer a remote monitoring service for cranes?
A: Yes, we offer an optional remote monitoring system that uses sensors and IoT technology to track the crane's performance in real-time. This system can monitor operating hours, load cycles, motor temperatures, and potential faults. It allows for predictive maintenance, reducing downtime and extending the equipment's lifespan.

Q: How do you ensure the accuracy of the crane's positioning?
A: For precise positioning, we can equip our cranes with variable-frequency drives, encoders, and laser-based positioning systems. These technologies allow for accurate speed control and precise stopping points, which is essential for applications like automated warehousing or assembly lines. We can achieve positioning accuracy of up to ±2 mm.

Q: What is the standard warranty period for a Kelude crane?
A: Our standard warranty period is 12 months from the date of commissioning or 18 months from the date of shipment, whichever occurs first. This warranty covers all defects in materials and workmanship. We also offer extended warranty options for additional peace of mind.

Q: Can you provide a crane that is resistant to high temperatures?
A: Yes, for applications in foundries, steel plants, or other high-temperature environments, we can design cranes with special heat-resistant materials, thermal insulation, and cooling systems for critical components. These cranes are engineered to operate reliably in ambient temperatures up to 60°C or higher, ensuring safety and performance.

Q: Do you offer cranes with a special coating for marine environments?
A: Yes, for offshore and marine applications, we provide cranes with a specialized coating system, including zinc-rich primers and high-build epoxy paints, to provide superior corrosion resistance against saltwater and harsh weather conditions. We also use stainless steel or galvanized components where necessary.

Q: Can you provide a crane with a double-trolley system?
A: Yes, we can design cranes with two independent trolleys on a single bridge. This allows for lifting long or heavy loads with two points of suspension, improving stability and flexibility. The trolleys can be operated independently or in tandem, depending on the load requirements.

Q: What is the process for obtaining a quote from Kelude?
A: To obtain a quote, please send us your detailed requirements via our website or email. This should include capacity, span, lifting height, duty class, and any special features. Our sales engineering team will review your request and provide a detailed proposal, including technical specifications, drawings, and pricing, typically within 48 hours.

Q: Do you offer cranes that are compliant with OSHA standards?
A: Yes, our cranes can be designed and manufactured to comply with OSHA (Occupational Safety and Health Administration) regulations for overhead and gantry cranes. We ensure that our equipment meets all applicable requirements for safety devices, structural integrity, and operational controls, helping you maintain a safe and compliant workplace.

Q: Can you provide a crane with a special control voltage?
A: Yes, we can customize the control voltage to match your facility's specifications. Standard control voltages are 110V AC or 24V DC, but we can accommodate other voltages as required. This ensures compatibility with your existing control systems and safety protocols.

Q: What is the maximum wind speed for outdoor crane operation?
A: For outdoor cranes, the maximum allowable wind speed for operation is typically 20 m/s (72 km/h). We design our outdoor cranes with wind load calculations in mind, and we can provide anemometers and wind speed alarms to alert operators when conditions become unsafe. For higher wind zones, we can reinforce the structure accordingly.

Q: Do you offer a buy-back or trade-in program for old cranes?
A: We do not have a standard buy-back program, but we can discuss options for handling your old equipment on a case-by-case basis. We can sometimes offer a trade-in value against the purchase of a new Kelude crane, or we can recommend a reliable partner for the disposal or refurbishment of your existing crane.

Q: How do you ensure the quality of the welding on your cranes?
A: Our welders are certified to international standards, and we follow strict welding procedures (WPS) for all critical joints. We conduct non-destructive testing (NDT) on a percentage of welds, including ultrasonic and magnetic particle inspection, to ensure there are no hidden defects. This ensures the structural integrity and safety of our cranes.

Q: Can you provide a crane with a special hook height?
A: Yes, the hook height can be customized

Parameter ItemLandfill OperationleachateBiogas Utilizationcoverage Closure
Recommended ModelMH Type/Grab (grab bucket)Anti-corrosion HoistExplosion-Proof HoistLD Type/Hoist
Lifting Capacity10t~32t3t~10t3t~10t5t~16t
special requirementsGrab (grab bucket)/Wind Protectionleachate/Anti-corrosionBiogas Explosion-proofOutdoor/Anti-corrosion
$15,000 – $445,000
Total Plant Investment
2–250t
Lifting Capacity Range
6–36m
Span Range
A3–A8
Work Duty Classification
Explosion-Proof / Corrosion-Resistant
Special Protection
4-Zone Coverage
Full-Process Solutions

Key Operating Zones in Solid Waste Treatment

A: Municipal solid waste (MSW) landfills and solid waste treatment facilities typically comprise four distinct operating zones—waste placement, leachate treatment, biogas utilization, and cover maintenance—each presenting unique corrosive conditions and duty cycle requirements. The waste placement zone (where refuse is unloaded, spread, compacted, and covered) demands the highest work duty classification. With daily waste intake ranging from 1,000 to 5,000 t/d, grab cranes with electric-hydraulic grabs (grab capacity 1–3 m³) and a lifting capacity of 5–16t over spans of 12–30m are recommended. These cranes operate at duty classification A7–A8 for 24-hour continuous operation, and the operator cab must be equipped with air conditioning and a positive-pressure fresh air system to prevent infiltration of odors and biogas. The leachate treatment zone (equalization tanks, biological treatment, membrane filtration, and concentrate disposal) is highly corrosive—leachate pH ranges from 4 to 9, with high concentrations of Cl⁻ (2,000–5,000 mg/L) and NH₃-N (1,000–3,000 mg/L), and relative humidity of 95%–100%. This zone requires SUS304 stainless steel electric hoists (2–5t capacity) with hot-dip galvanized crane rails, IP66-rated electrical control boxes, and 316L fasteners. The biogas power generation zone (gas collection, purification, power generation, and grid connection) is classified as an explosion-hazard area (methane explosion limits: 5%–15%), where Ex d IIB T4 explosion-proof electric hoists (3–10t capacity) are recommended. The cover maintenance zone (HDPE geomembrane placement, welding, and repair) primarily involves light lifting—HDPE membrane rolls weigh 2–5t, making LD type single-girder electric hoists (3–10t capacity) with dedicated roll-handling lifting spreaders the ideal choice. Kelude Heavy Industry supplies a full range of corrosion-resistant lifting equipment for landfill operations, from placement grabs to leachate treatment anti-corrosion hoists.

Why Choose Kelude Heavy Industry

Kelude Heavy Industry has years of specialized experience in lifting equipment for landfills and solid waste treatment facilities. We deliver tailored solutions covering waste placement, leachate treatment, biogas utilization, and cover maintenance, with a product line that includes explosion-proof electric hoists, stainless steel anti-corrosion hoists, LD type overhead cranes, MH type gantry cranes, and KBK flexible systems—meeting the diverse hoisting requirements of every stage in landfill and solid waste treatment operations.

Full Operating Condition Coverage
From compact KBK systems (125 kg) to large-tonnage specialty cranes (250t), from standard workshops to Ex d IIB T4 explosion-hazard zones, and from ambient temperatures down to −162°C, Kelude's product line spans the full range of lifting requirements across every landfill and solid waste treatment zone. Single-source procurement eliminates the cost and complexity of coordinating multiple suppliers.
Qualifications & Certifications
Kelude Heavy Industry holds a Special Equipment Manufacturing License, Explosion-Proof Electrical Equipment Installation Qualification, and ISO 9001 / ISO 14001 / ISO 45001 management system certifications. Our explosion-proof products have passed Type Tests conducted by the National Supervision and Inspection Center for Explosion-Proof Electrical Products, and every unit ships with a complete Certificate of Conformity and inspection report.
Full-Process Service
From site survey and solution design to equipment manufacturing, installation & commissioning, acceptance testing, operator training, and after-sales maintenance, Kelude provides complete end-to-end service. Key equipment carries a 2-year warranty, supported by 12 after-sales service centers nationwide, with on-site response within 48 hours of a service call and 48-hour dispatch for common spare parts.

FAQ

Q: Why is the Work Duty of a landfill grab crane rated A7–A8?
A: Landfill grab cranes typically operate 16–24 hours per day with a grabbing frequency of 20–40 cycles per hour, making them continuous heavy-duty machines. Per the ISO 4301 standard, when average daily operation exceeds 16 hours and annual working days exceed 300, the crane must be classified as A7 (extra-heavy duty) or A8 (continuous extra-heavy duty). A standard A5 crane under these operating conditions would develop structural fatigue cracks within 2–3 years. Kelude Heavy Industry's landfill grab cranes undergo 100% Ultrasonic Testing (UT) on critical weld seams, and the main girder fatigue life exceeds 20 years.
Q: What anti-corrosion measures are used in the leachate treatment workshop?
A: The leachate treatment workshop employs a five-tier corrosion protection system: ① Main structure fabricated from SUS304 stainless steel (coating-free corrosion protection, eliminating the risk of coating delamination); ② Crane rails hot-dip galvanized (zinc layer thickness ≥85 μm); ③ Electrical control box rated IP66 with a stainless steel enclosure and positive-pressure ventilation (preventing corrosive gas ingress); ④ Wire ropes sheathed with PP or PE coating (thickness ≥1 mm); ⑤ All fasteners made of 316L stainless steel, including rail clamp bolts and pulley shaft retaining rings. The complete system is designed for a service life of 12–15 years.
Q: Why are explosion-proof cranes required in biogas power generation areas?
A: Biogas typically contains 50%–70% methane—lower purity than natural gas, yet its explosive range remains 5%–15%—and often carries H₂S at 50–2000 ppm. On a standard crane, sparks from motor commutators, relay contacts in the electrical control box, and arcing at conductor rail current collectors can all serve as ignition sources. An Ex d IIB T4 explosion-proof crane encloses every electrical component in a flameproof housing (Ex d), so even an internal explosion cannot ignite the surrounding biogas. Kelude's explosion-proof crane line carries national explosion-proof certification.
Q: How many cranes does a landfill site need?
A: For a typical large landfill (daily throughput ≥2000t), the recommended configuration is: ① 1 grab overhead crane (10–16t lifting capacity) in the waste handling area for waste grabbing, transfer, and truck loading; ② 1 stainless steel hoist (2–5t) in the leachate treatment area for equipment installation and maintenance; ③ 1 explosion-proof hoist (3–10t) in the biogas power generation area for installation and maintenance of biogas equipment; ④ 1 LD type single-girder crane (3–5t) in the maintenance workshop for storage and handling of cover materials, pipes, and other supplies. The total investment for these four units is approximately $45,000–$178,000.

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