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Mairuite (Shandong) Heavy Industry Machinery Co., Ltd.
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Large-sized double-layer PVC film packaging, small-sized non-sterilization wooden box packaging
Anti‑swing function
Optional support
Model Number
QD
Certification
CE
Brand Name
MRT
Place of Origin
China
Double-girder bridge crane
Double girder overhead crane is high‑performance heavy‑duty lifting equipment. Adopting rigid double box‑girder structure, it features small deflection and stable running. Multiple control ways and safety devices are equipped. Span, lifting height and working class can be customized. It supports OEM and non‑standard design, widely applied in workshops, steel mills, warehouses and other industrial sites for heavy goods lifting and handling.
Product Advantages
High rigidity double‑girder structure, minimal deflection and vibration for continuous heavy‑duty operation
Flexible load capacity, optional single or dual trolley for long and irregular workpieces handling
Full set of safety protections including overload limiter, travel limit switches, anti‑collision buffer and dual emergency brakes
VFD variable frequency drive, smooth start‑stop, low load swing and accurate positioning
High‑strength steel and premium welding workmanship, excellent anti‑wear and anti‑corrosion performance
Customizable span, lifting height and travelling speed to match different workshop layouts
Dual control options: operator cabin and wireless remote control for convenient operation
Support intelligent retrofit with remote monitoring, fault self‑diagnosis for industrial IoT connection
Main Technical Parameters
Item
Specification
Rated Lifting Capacity
5‑50t
Span
10.5‑31.5m
Lifting Height
6‑24m
Working Duty
A3‑A6
Lifting Speed
3.5‑13m/min
Trolley Travel Speed
20‑45m/min
Crane Travel Speed
30‑75m/min
Control Method
Pendant / Remote / Cabin
Power
380V 50Hz 3‑Phase
Application Scenarios
Machinery manufacturing workshops: hoisting and assembling large mechanical parts
Steel & metallurgy plants: handling steel plates, coils and bulk raw materials
Foundry workshops: transporting castings and heavy forgings
Power and new energy factories: installation and maintenance of heavy equipment
Heavy‑duty warehouses: frequent turnover of heavy bulk goods
Heavy equipment factories: moving molds and oversized workpieces
Heavy processing workshops: workpiece turnover and precise positioning
Indoor heavy‑load production lines for continuous high‑intensity lifting tasks
Why Choose Us
Professional manufacturer, all equipment can be customized according to your working conditions
Strict quality inspection before delivery, support CE certification
Long warranty period and overseas technical guidance service
Flexible trade terms: EXW, FOB, CIF, DDP available
Support OEM & ODM solution design
Contact us and send your requirements of load, size and working environment, we will provide the most suitable transportation solution and formal quotation for you.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter,Seller,Other
Year Established:
2005
Employee Number:
500~1000
Ecer Certification:
Site Member
Merit (Shandong) Heavy Industry Machinery Co., Ltd. is a subsidiary of Shandong Longhui Group. It is located at the foot of the world-famous Mount Tai. Yangliu Town, the hometown of Yanghu, a famous general in the Western Jin Dynasty, is the hometown of cranes. A professional manufacturer of heavy h... Merit (Shandong) Heavy Industry Machinery Co., Ltd. is a subsidiary of Shandong Longhui Group. It is located at the foot of the world-famous Mount Tai. Yangliu Town, the hometown of Yanghu, a famous general in the Western Jin Dynasty, is the hometown of cranes. A professional manufacturer of heavy h...