
India’s steel industry features continuous high-load operation, alta temperatura, polvere pesante, flue gas corrosion and frequent cyclic lifting. Steel mill lifting equipment requires stable load-bearing capacity, excellent environmental adaptability and high safety to meet long-shift industrial production requirements.
This project targets a large integrated steel plant in eastern India, covering iron smelting, steel casting, coil rolling and finished product delivery. Previously, outdated on-site overhead cranes had insufficient load capacity and poor stability. Prone to frequent breakdowns under high-frequency heavy-load and harsh workshop conditions, they caused repeated production halts, low productivity and excessive maintenance costs.
To eliminate lifting bottlenecks, boost handling efficiency and reduce unplanned downtime, the plant upgraded its core lifting equipment. Based on local working conditions and production load demands, a customized 50-ton double girder overhead crane was installed for full-process production lifting. Dopo l'installazione, commissioning and long-term field operation, the crane perfectly adapts to the plant’s harsh environment and delivers stable, high-efficiency lifting performance.
This 50-ton double girder overhead crane is tailored for A6 heavy-duty working conditions, complying with Indian industrial power standards and on-site workshop layout. Its core technical parameters are listed below:
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Parametro tecnico
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Specific Specification
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Capacità di sollevamento nominale
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Gancio principale: 50T; Auxiliary hook: 10T
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Intervallo di lavoro
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24M (customized according to plant workshop layout)
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Altezza di sollevamento
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12M
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Classe operaia
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A6 (heavy-duty for frequent cyclic operation)
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Velocità di sollevamento
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Gancio principale: 0.5-8m/mio (frequenza variabile); Auxiliary hook: 1-12m/mio (frequenza variabile)
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Velocità di viaggio del carrello
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0-20m/mio (regolazione della velocità a frequenza variabile)
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Velocità di viaggio della gru
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0-30m/mio (regolazione della velocità a frequenza variabile)
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Alimentazione elettrica
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380V/50 Hz/3 Ph (Indian industrial standard power supply)
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Grado di protezione
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IP54 (dust-proof and splash-proof)
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Modalità di controllo
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Ground wireless remote control + cab manual dual control
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Safety Protection Device
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Overload limit, height limit, limite di viaggio, power loss protection, emergency stop device, dispositivo anticollisione
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Customized for steel mills’ high-temperature, dusty and corrosive environments, this crane adopts high-strength low-alloy steel for the main beam, featuring outstanding heat and oxidation resistance. It maintains stable structural performance without deformation during long-term continuous operation near smelting furnaces. Equipped with dustproof and heat-dissipating electrical components and IP54 protection grade, it avoids circuit and component damage from harsh conditions, supporting 24-hour stable operation for steel production.
Adopting full variable frequency speed regulation, the crane eliminates sudden starts, stops and load swing common in traditional cranes, ensuring smooth operation and high positioning accuracy. It greatly improves safety when lifting heavy steel ingots and molten steel ladles. The dual control mode of wireless remote control and cab operation enables flexible adjustment according to on-site conditions, reducing operational errors and improving overall working efficiency.
Matching steel production’s high-risk working characteristics, the crane is equipped with comprehensive safety devices including overload, height and travel limit protection, power-off braking and emergency stop functions. It automatically locks operations under abnormal conditions to prevent load falling and equipment collisions. The built-in fault self-inspection system enables maintenance personnel to quickly locate faults, eliminating potential safety hazards in daily production.
Key load-bearing components adopt integral welding and forging technology, with high rigidity and strong fatigue resistance to adapt to A6 frequent heavy-duty cyclic work. Vulnerable parts use high-temperature and wear-resistant materials suitable for steel mill scenarios. The modular design simplifies daily inspection and parts replacement, effectively reducing on-site failure rates, maintenance workload and operational costs, and ensuring continuous production line operation.
The crane undertakes stacking and transshipment of scrap steel, minerale di ferro, coke and other bulk raw materials in stockyards and processing areas. Its 50-ton rated load enables one-time lifting of heavy material bundles, avoiding repeated low-efficiency handling. Stable variable-frequency operation prevents material spillage, standardizes on-site stacking and ensures consistent material supply for smelting.
In high-temperature smelting and casting workshops, the crane handles molten steel ladles and steel ingot transfers. Its excellent heat resistance and operational stability adapt to intense furnace heat radiation, while precise positioning guarantees accurate pouring and docking. Ciò garantisce continuità, stable smelting and casting processes and avoids product quality fluctuations from unstable lifting.
Steel plant core equipment such as smelting furnaces and rolling mills requires regular overhaul and parts replacement. This 50-ton crane is widely used for lifting and installing heavy production equipment. Flexible dual-control operation adapts to narrow, high-altitude maintenance scenarios, and reliable safety configurations guarantee heavy-duty operation safety, shortening overhaul cycles and reducing production downtime.
In finished product warehouses, the crane is responsible for stacking, handling and truck loading of steel coils, plates and profile steels. Its stable and efficient operating speed greatly improves warehousing and delivery efficiency. Effective load swing suppression prevents finished steel surface damage and deformation, protecting product quality and supporting efficient warehouse logistics.
After long-term field operation, the customized 50-ton overhead crane stably adapts to the plant’s high-intensity harsh working conditions with zero major safety incidents. Compared with old equipment, it increases overall handling efficiency by over 30% and reduces failure rate by 40%. It effectively cuts unplanned downtime and maintenance costs, solves long-term production lifting bottlenecks, and provides reliable heavy-duty lifting support for the steel plant’s efficient and stable operation.
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