Heavy-Duty Mining & Construction Dump Bodies
In the mining and heavy construction industries, equipment uptime is everything. Dump bodies (haul truck beds) are subjected to continuous high-impact loading, extreme abrasion, and structural fatigue. To survive these harsh environments, they must be fabricated with uncompromising precision and premium wear-resistant materials.
Openex specializes in the custom fabrication of massive, severe-duty dump bodies for rigid mining haul trucks and articulated dump trucks. With massive facility lifting capacities up to 250 tons, we can seamlessly manufacture, weld, and paint bodies for 40-ton to 400-ton class mining trucks entirely under one roof.
Dump Body Manufacturing Specifications
We custom manufacture haul bodies directly to your OEM blueprints, optimizing for payload capacity, weight reduction, and extreme durability.
| Truck Class Capacity | 40-Ton to 400-Ton Payload Classes |
|---|---|
| Primary Materials | Hardox® 400/450/500, AR400, AR500, High-Strength Low-Alloy (HSLA) Steels |
| Structural Components | Impact-resistant floor plates, reinforced rock canopies, heavy bolsters, and box-section ribs. |
| Welding Standards | AWS D1.1 Certified. Full-penetration SAW & FCAW for maximum structural integrity. |
| Surface Protection | In-house steel grit blasting (SA 2.5) followed by multi-coat heavy industrial epoxy/polyurethane painting. |
Our Work: Mining Dump Bodies
The Manufacturing Process
We utilize high-definition plasma and laser cutting machines to cleanly profile heavy wear-resistant (AR) steel plates. Precise edge bevelling is performed to prepare the joints for deep-penetration welding.
Using our massive 3000-ton press brakes, we fold the floor panels and structural ribs, minimizing the number of weld seams required. This drastically increases the overall strength and fatigue life of the dump body.
Our fitters assemble the canopy, sidewalls, bolsters, and floor. AWS-certified welders then use Flux-Cored Arc Welding (FCAW) and Submerged Arc Welding (SAW) to fuse the heavy assemblies together.
Once ultrasonic testing (UT) confirms weld integrity, the massive body is moved into our state-of-the-art blast booths. We apply heavy-duty industrial primers and topcoats to protect against corrosion.