QD double girder overhead crane

The QD double girder overhead crane from Chunhua Crane represents a reliable, heavy-duty material handling solution designed for industrial environments that demand consistent performance under high-cycle operations. As a senior export sales engineer, I can confirm that this overhead bridge crane is engineered for buyers seeking a robust lifting system that balances load capacity with operational flexibility. The QD series serves as the backbone of production and warehousing facilities worldwide, offering a key strength in its ability to handle loads from 3 metric tons up to 150 metric tons with a standard span range of 7.5 meters to 31.5 meters, making it suitable for both compact workshops and expansive industrial halls.

Technically, the QD double girder crane is built around a welded box-section girder design that provides excellent torsional rigidity and minimizes deflection under full load. The standard lifting height spans from 6 meters to 30 meters, with custom extensions available for special building profiles. The crane structure utilizes either single or double girder configurations depending on the span and capacity requirements, with the double girder design being standard for capacities above 20 tons. The main hoist mechanism is driven by a dedicated motor with dual-speed or variable frequency drive (VFD) control, ensuring smooth load positioning and reduced mechanical stress. For electrical components, we offer standard Chinese-branded motors and controls, with the option to upgrade to Schneider or Siemens electrics at the buyer’s request. The control interface is available in three primary formats: a pendant handle for direct floor operation, a wireless remote control for operator mobility and safety, or a fully enclosed cockpit for applications requiring constant operator visibility. Safety devices are integrated as standard, including overload limiters, emergency stop buttons, buffer stops at both ends of the runway, and audible travel alarms. Optional features include IP55-rated electrical enclosures for dusty or humid environments, explosion-proof configurations for chemical or petrochemical facilities, and anti-corrosion coatings for coastal or marine applications. The entire design complies with GB/T 3811 and GB/T 14405 crane standards, and we can manufacture to FEM, DIN, or CMAA specifications upon request.

This crane is deployed across a broad spectrum of heavy industries. Typical applications include steel mills for handling coils and billets, port and shipyard facilities for container and machinery lifting, heavy machinery assembly plants for positioning large components, warehouse and logistics centers for bulk storage retrieval, power generation stations for turbine and generator maintenance, and automotive manufacturing lines for stamping die changes and engine block handling. The QD series is equally effective in foundries, precast concrete yards, and mining maintenance workshops where reliability and uptime are critical.

Choosing Chunhua Crane as your supplier delivers direct factory pricing that is typically 30 to 50 percent below equivalent European-branded cranes, without compromising on structural integrity or safety compliance. Our factory, established in 2003, has produced thousands of cranes for domestic and international clients, and we can provide CE certification for European markets and CCC certification for Chinese domestic projects as required. Every crane is engineered to order, meaning we adapt the span, lifting height, control system, and electrical configuration to match your exact facility dimensions and operational workflow. We guarantee a formal quotation and preliminary CAD drawing within four hours of receiving your inquiry, allowing you to evaluate the solution quickly. Our logistics team coordinates sea freight to over 60 countries, and we have established shipping routes to major ports in Southeast Asia, the Middle East, Africa, South America, and Europe.

The ordering process is straightforward and designed for international buyers. You can initiate a project by contacting us via WhatsApp or email with your required capacity, span, lifting height, and preferred control mode. Our engineering team will respond with a detailed quotation and a general arrangement CAD drawing within four hours. Once the proposal is accepted, we require a 30 percent T/T deposit to begin fabrication. Production typically takes 30 to 45 days, depending on capacity and customization complexity. After completion, we arrange sea freight to your designated port, and we can also coordinate optional on-site installation and commissioning services through our network of local partners. This structured approach ensures that from initial inquiry to operational crane, the entire process remains transparent, timely, and aligned with your project schedule.