50 Ton Double Girder Gantry Crane Exported to Qatar for a Precast Concrete Storage Yard | Case Study

Middle East Project | GCC | Precast Concrete Handling Solution

نظرة عامة على المشروع

A precast concrete manufacturing yard in Qatar needed a reliable, high-capacity lifting solution to move heavy concrete panels, beams, and box-culvert segments between the production line, curing area, and open-air storage yard. WEIHUA supplied a رافعة جسرية مزدوجة العارضة سعة 50 طنًا, engineered specifically for outdoor precast concrete handling in the demanding heat and humidity conditions typical of the Gulf region.

This case study outlines the customer's application requirements, the technical specifications of the delivered crane, and the results achieved after commissioning — a reference project for any precast concrete plant أو construction materials yard across Qatar, Saudi Arabia, the UAE, and the wider GCC evaluating a heavy-duty outdoor gantry crane.

Customer Background and Challenge

The end user operates a large-scale precast concrete storage yard producing box culverts, girders, and structural panels for regional infrastructure projects. Before contacting WEIHUA, the customer faced three recurring problems with their existing handling setup:

Limited span and lifting height — the yard's long, parallel storage rows required a crane capable of covering wide spans without intermediate columns.
Harsh outdoor operating environment — high ambient temperatures, sand, and humidity demanded a crane structure and electrical system rated for continuous outdoor duty.
Heavy, irregular concrete loads — precast beams and panels required a stable double girder structure and a hook capable of safely handling asymmetric loads up to 50 tons.

These requirements pointed toward a رافعة جسرية ذات عارضة مزدوجة rather than a single girder model, since double girder design offers a lower headroom loss, higher lifting height, and greater structural rigidity for precast concrete handling at this capacity.

The WEIHUA Solution-50 Ton Double Girder Gantry Crane

Based on a site survey and the customer's layout drawings, WEIHUA's engineering team proposed a رافعة جسرية مزدوجة العارضة سعة 50 طنًا configured for outdoor material handling in a concrete storage yard environment.

مواصفات الرافعة

غرض	مواصفة
نوع الرافعة	رافعة جسرية مزدوجة العارضة (Outdoor, Rail-Mounted)
قدرة الرفع المقدرة	50 Tons (Main Hook) / 10 Tons (Auxiliary Hook)
فترة	30 m (typical range for wide-row precast yards)
ارتفاع الرفع	Main Hook: 14 m / Auxiliary Hook: 16 m
Cantilever Length	9 m (one or both ends, per yard layout)
سرعة الرفع	Main Hook: 3–8 m/min / Auxiliary Hook: 6–12 m/min
سرعة سفر العربة	20–30 m/min
Crane Traveling Speed	30–40 m/min
واجب العمل	A5 (FEM) / M5 (medium-heavy duty), per FEM 1.001 / ISO 4301
بناء	Box-type double girder for rigidity and stability
مقياس السكة الحديدية	Per site foundation design, typically 30–35 m matching span
مزود الطاقة	380V/415V, 50Hz, 3-phase (configurable to local grid standard)
طريقة التحكم	Cab control + wireless remote control
فئة الحماية	IP54/IP55 electrical enclosures for outdoor, humid environments
Surface Coating	Anti-corrosion primer + marine-grade topcoat, UV- and heat-resistant
Applicable Standards	GB/T 14406, FEM 1.001, ISO 4301
طلب	Precast Concrete Yard / Concrete Component Handling
بيئة العمل	Outdoor, high-temperature, humid coastal climate
نوع الرافعة	رافعة كهربائية سلكية trolley
وجهة	Qatar, Middle East (GCC)

Why a 50 Ton Double Girder Gantry Crane Was the Right Fit

Rigid box-girder structure built to handle the weight and dimensions of precast beams, panels, and box culverts without excessive deflection.
Outdoor-rated components — corrosion-resistant coating and electrical enclosures suited to a hot, humid Gulf climate.
Wide-span gantry legs allow the crane to straddle multiple storage rows, maximizing yard throughput per crane.
Rail-mounted travel for efficient movement along the full length of the precast concrete storage yard, reducing cycle time between production, curing, and stacking areas.

Manufacturing and Export Process

Every WEIHUA crane goes through structured fabrication, factory testing, and export packing before shipment. For this Qatar project, the major structural components — main girders, end trucks, and gantry legs — were fabricated, assembled, and load-tested at WEIHUA's production facility prior to disassembly for shipping.

Main girder and structural components wrapped in weatherproof packaging ahead of export.

Packaged crane girders staged for loading, with an assembled gantry crane visible in the background.

Components were securely wrapped, crated, and loaded onto flatbed trailers for transport to the port, ensuring the structural steel arrived in Qatar ready for on-site erection with minimal delay.

Crane components loaded and chain-secured on a flatbed trailer for the export journey.

نتائج

After installation and commissioning at the Qatar precast concrete yard, the 50-ton double girder gantry crane delivered:

Higher yard throughput — wide span coverage reduced the number of cranes needed to service multiple storage rows.
Safer handling of heavy precast components — stable box-girder design and matched hoist capacity for beams, panels, and box culverts up to 50 tons.
Reliable outdoor operation — structure and electrical systems performing consistently under Qatar's high-temperature, high-humidity conditions.
Reduced handling cycle time between production, curing, and storage stages of the precast concrete workflow.

About WEIHUA Cranes

ويهوا designs and manufactures رافعات علوية, gantry cranes, and hoists for industrial and outdoor material handling applications worldwide, with export experience across the Middle East, Gulf Cooperation Council (GCC) countries, and other international markets. For precast concrete plants, ports, and heavy industrial yards requiring a heavy-duty gantry crane solution, WEIHUA's engineering team provides project-specific design, factory testing, and export logistics support.

Looking for a gantry crane solution for your precast concrete yard or industrial site? Contact WEIHUA's engineering team for a customized proposal based on your span, capacity, and site conditions.

الأسئلة الشائعة

What capacity of gantry crane is needed for a precast concrete storage yard?

Capacity depends on the weight of the heaviest precast component (beams, panels, or box culverts) plus the lifting attachment. A 50-ton double girder gantry crane is a common choice for mid-to-large precast yards handling heavy structural elements.

Why choose a double girder gantry crane over single girder for precast concrete handling?

Double girder gantry cranes offer greater structural rigidity, higher lifting height, and better load stability for heavy, irregularly shaped precast components — making them the preferred choice above roughly 20–30 tons capacity.

Can WEIHUA gantry cranes be customized for Qatar and Middle East climate conditions?

Yes. WEIHUA engineers cranes for outdoor Gulf-region conditions, including corrosion-resistant coatings and electrical components rated for high temperature and humidity.