26-Mar-2026

From Workshop to the Red Sea: The Manufacturing Journey of 11 Units LHB Explosion-Proof Double Girder Cranes for Yemen

Trust in quality begins with transparency.

At Dongqi Crane, we believe that a picture is worth more than a thousand specifications. It is proof of process, evidence of precision, and a testament to our commitment to safety. Today, we are taking you behind the scenes of a landmark project: the production of 11 units of LHB type double girder explosion-proof overhead cranes, supplied to a major industrial facility in Yemen in 2020.

This order—featuring capacities of 3 tons, 5 tons, 7 tons, and 10 tons—represented not just a logistical challenge, but a rigorous test of our manufacturing standards for hazardous environments. Below, we document the three critical phases of production: Pre-painting (Fabrication), Post-painting (Finishing), and Final Packing.

Phase 1: Precision Fabrication – Before Painting

The foundation of any reliable explosion-proof crane lies in the integrity of its steel structure. Before any paint touches the surface, our skilled technicians in the Dongqi factory are hard at work.

In this phase, we focused on the main girders, end carriages, and trolley frames.

  • Main Girders: The double girder design was fabricated using high-strength steel. Our images show the clean, straight weld seams on the box girders. For explosion-proof applications, structural integrity is non-negotiable; each weld was inspected to ensure zero defects that could compromise safety under load.
  • End Carriages: The end carriages were precisely machined to ensure perfect alignment with the runway. You can see the running wheels being fitted. Even at this raw stage, the quality of the steel and the precision of the cutting are visible.
  • Trolley & Hoist Components: The hoist trolleys, designed specifically for Ex-proof (Explosion-proof) environments, were assembled with specialized anti-spark components.
End beam - before painting
Main beam - before painting
Main beam - before painting
Main beam - before painting
Main beam - before painting
Main beam - before painting

Phase 2: Finishing – Anti-Corrosion & Explosion-Proof Painting

The environment in Yemen often involves high temperatures, dust, and industrial chemicals. To ensure longevity, surface treatment is critical. Phase 2 showcases the cranes in their finished color—typically a signal color (often yellow or red) that meets international safety standards.

During this stage:

  1. Sandblasting: All components underwent thorough sandblasting to remove any rust or mill scale, achieving a high surface cleanliness grade (Sa 2.5).
  2. Primer & Topcoat: We applied a high-build anti-corrosion primer followed by a durable topcoat. For explosion-proof cranes, the paint system also serves to prevent static buildup.
  3. Component Assembly: The photos from this phase show the fully assembled cranes. You can clearly see the explosion-proof motors, frequency converters for smooth operation, and the electrical control boxes (Ex-proof rated) mounted neatly on the bridge.
Main beam
Main beam
Main beam
end beam
end beam
Explosion-proof wire rope hoist
Explosion-proof wire rope hoist
Crane trolley
Crane trolley

Phase 3: Ocean-Ready – Waterproof Tarpaulin Packing

Shipping heavy industrial equipment from China to the Middle East requires meticulous packing to withstand saltwater corrosion and long transit times. Phase 3 documents our export-standard packing process.

To ensure that the cranes arrived in Yemen in “as-new” condition:

  • Waterproof Protection: Each component—from the main beams to the electrical accessories—was wrapped in multiple layers of industrial-grade waterproof tarpaulin.
  • Reinforced Fixing: We utilized specialized steel frames and lashing belts to secure the loads onto flat racks and open-top containers. The images clearly show how we prevent shifting during rough sea voyages.
  • Labeling: All packages were labeled with the project name, part number, and handling instructions to facilitate easy customs clearance in Yemen and smooth on-site installation.
Use waterproof cloth packaging
Use waterproof cloth packaging
Use waterproof cloth packaging
Use waterproof cloth packaging
Use waterproof cloth packaging
Use waterproof cloth packaging

Why This Matters for Your Next Project

This 2020 Yemen project is a prime example of Dongqi Crane’s capability to handle complex, high-stakes orders for the Middle Eastern market. Whether you are in the oil & gas, chemical, or heavy industrial sector, safety is paramount.

When you partner with Dongqi Crane:

  • You get certified safety: All LHB type cranes meet international explosion-proof standards.
  • You get visual accountability: Like the photos above, we maintain strict quality control records throughout the production cycle.
  • You get logistical expertise: We understand the complexities of shipping heavy industrial equipment to challenging locations, ensuring your investment arrives safely.

Are You Looking for Reliable Explosion-Proof Cranes?

Whether you require LHB double girder cranes, single girder models, or customized overhead cranes for hazardous areas, Dongqi Crane is your trusted partner.

We are currently accepting inquiries for new projects in the Middle East, Africa, and beyond.

Contact us today to get a quote:
📧 Email: sales010@cranesdq.com
🌐 Website: sg.craneyt.com/contact/

Let us build the safety and reliability your factory needs. Request your customized quote now.