ما الفرق بين الرافعات العلوية ذات العارضة الواحدة والرافعات العلوية ذات العارضة المزدوجة؟
2026年3月21日
Single Girder vs Double Girder Overhead Crane: What Is the
Including standard gantry cranes, hydraulic gantry systems, and straddle carriers for worldwide applications.
Gantry cranes are a key product category in industrial lifting and handling solutions. They can be understood as lifting equipment formed by adding support legs on both sides to a overhead crane, and are typically used for heavy-duty material handling in stockyards, shipyards, and other outdoor industrial environments. Since the main girder is supported by its own legs, gantry cranes can be designed as rail-mounted, wheeled, or stationary models depending on actual operating conditions, making them suitable for a wide range of indoor and outdoor lifting applications.
We provide not only standard gantry cranes, but also hydraulic gantry cranes and straddle carriers for more specialized lifting and transport applications.
Hydraulic gantry cranes, straddle carriers and travel lift (mobile boat hoist) require stronger engineering understanding and more specialized project coordination than conventional lifting equipment.
Unlike ordinary trading companies or fixed-model manufacturers, we rely on professional technical engineers and flexible production coordination to deliver more suitable solutions.
Our product range covers both standard gantry crane types and advanced heavy lifting solutions, helping customers find the right system for everyday handling or specialized project requirements.
Hydraulic gantry crane, mainly used for lifting and assembling large
Hand-pushed aluminium alloy portable gantry crane is a kind of
Double girder gantry crane are suitable for high-frequency lifting operations
MOTCRANE combines technical understanding, flexible production coordination, and project-focused service to deliver lifting solutions for global customers. Rather than operating as a simple trading intermediary or a fixed single-factory model, we work with professional engineers and qualified manufacturing partners to support standard cranes, hydraulic gantry systems, straddle carriers, travel lift (mobile boat hoist), and other customized heavy lifting projects.
Our gantry crane solutions follow a structured quality assurance process from requirement review to final delivery, helping ensure reliable performance and proper project execution.
Confirm capacity, span, travel method, and working conditions.
Develop drawings and technical solutions based on project needs.
Manufacture steel structure through specialized factories.
Select reliable suppliers for hoists, motors, wheels, hydraulic units, and electrical systems.
Check key materials, components, and fabrication quality during production.
For selected projects, assembly and adjustment are completed before painting to avoid coating damage during later installation.
Carry out running checks, functional testing, and load testing when required before delivery.
Complete final checks before packaging and shipment.
We provide responsive support from technical consultation to delivery coordination for standard and non-standard gantry crane projects.
Evaluate lifting needs and working conditions.
Match the right solution to the project.
Confirm drawings and key specifications before production.
Coordinate qualified factories and production progress.
Arrange pre-delivery assembly, adjustment, and testing for selected projects.
Support shipment, follow-up, and project communication.
Explore selected project cases covering standard gantry cranes, hydraulic gantry systems, straddle carriers and travel lift (mobile boat hoist) for different lifting and handling applications.
في ديسمبر 2025، قمنا في ديسمبر 2025 بتخصيص وتسليم 30 طنًا
In November 2025, MOTCRANE successfully completed 3 set of 3ton
In May 2023, we received an inquiry for the 5Ton
5-ton single girder overhead crane crossed the ocean and successfully
A customer from Kenya recently inquired about a 3-ton single-girder
The 2-ton free standing jib crane is thoughtfully designed to
Explore related articles about gantry crane types, application scenarios, heavy lifting solutions, and project selection tips for different industries.
Single Girder vs Double Girder Overhead Crane: What Is the
كيف تحقق الرافعة الجسرية الهيدروليكية الجسرية التي تزن 30 طنًا رفعًا متزامنًا عالي الدقة
How to Select a 30-Ton Hydraulic Gantry Crane for Industrial
FEM Standard European Electric Wire
Frequently Asked Questions About Gantry Crane Solutions
Choosing the right gantry crane solution depends on lifting capacity, span, working environment, and project requirements. Below are some common questions about standard gantry cranes, hydraulic gantry systems, and straddle carriers.
Generally, the basic specifications provided by the purchaser are sufficient for developing a preliminary design (load capacity, span, lifting height, indoor or outdoor use, power supply specifications, control method, operating frequency, and site photos or approximate dimensions).
However, to avoid misjudgments, it is best to also inform MOTCRANE of your intended actual workflow and operational objectives.
From standard portable, aluminum alloy, single-girder, and double-girder gantry cranes to custom heavy-duty solutions such as hydraulic gantry cranes, gantry transporters, and yacht cranes, MOTCRANE can provide tailored equipment solutions based on specific operational requirements.
This depends on the type of cargo, the operational workflow, the handling distance, and the on-site conditions. If you’re unsure which option to choose, we recommend describing your actual workflow to MOTCRANE—such as what cargo you need to lift, how it will be moved, whether cross-area transport is required, and any on-site constraints.
For needs involving loads under 3 tons and a smaller operational range, portable gantry cranes or aluminum alloy gantry cranes are typically suitable options.
For routine lifting operations within fixed areas in factories, warehouses, yards, or shipyards, single-girder or double-girder gantry cranes are usually the best choice. These types of equipment generally operate along fixed tracks and are suitable for repetitive lifting tasks within a specific area.
Hydraulic gantry cranes are better suited for the installation of large equipment, heavy-load jacking, and modular lifting in confined spaces. Since these operations typically require high precision during the jacking process and final positioning, they are more suitable for heavy-duty installation work rather than routine, high-frequency lifting.
Traveling cranes are generally used to transport containers, large components, or other long and oversized cargo across large areas. Common rated lifting capacities include 35 tons, 60 tons, and 80 tons. They not only provide lifting capabilities but also transportation capabilities. For shipyard and yacht handling applications, they can also be designed as specialized Travel Lift (Mobile Boat Hoist) solutions.
MOTCRANE is not a traditional steel fabrication plant in the conventional sense. For the steel structural components of gantry cranes, overhead cranes, jib cranes, and other heavy-duty material handling equipment projects, we typically arrange for manufacturing by specialized partner steel fabrication plants based on the equipment type and project requirements.
MOTCRANE is primarily responsible for project proposal confirmation, engineering design, procurement of key components, production coordination, quality supervision, as well as pre-shipment assembly inspections and technical commissioning. In short, while the steel structures are manufactured by specialized partner factories, MOTCRANE oversees the overall technical control, quality supervision, and project coordination to ensure that the final delivered equipment better meets actual operating conditions and project requirements.
Yes. For portable gantry cranes, aluminum alloy gantry cranes, hydraulic gantry cranes, straddle carriers, and Travel Lifts, MOTCRANE will arrange for pre-assembly, commissioning, and functional testing prior to shipment to ensure that the equipment’s operational status and key functions meet the requirements for use.
For standard gantry cranes, due to differences in structural dimensions and transportation methods, full-unit pre-assembly is generally not performed. However, trial runs of the travel and hoisting mechanisms are conducted prior to shipment to verify that these systems are functioning properly.
In short, MOTCRANE arranges appropriate inspections and tests prior to shipment based on the equipment type and project specifics to help minimize risks associated with on-site installation and commissioning.
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