Custom Fabrication of Heavy Steel Casings
Large-scale infrastructure and industrial equipment require massive protective housings that can withstand extreme underground pressures, environmental corrosion, and heavy operational loads.
Openex specializes in the heavy plate rolling, welding, and machining of large steel housings and casings. We routinely manufacture massive components such as Tunnel Boring Machine (TBM) shields, deep foundation caissons, turbine housings, pump casings, and underground structural shafts. With 250-ton lifting capacities and some of the world's largest CNC boring mills, we deliver fully assembled, precision-machined housings directly to your job site.
Housing & Casing Manufacturing Specifications
We build to your exact blueprints, whether you need a single massive TBM shield or high-volume foundation casings. Below are our general facility capacities:
| Maximum Diameter (Rolled) | Up to 12,000 mm (12 Meters) and beyond in sections |
|---|---|
| Maximum Plate Thickness | Up to 200 mm (Cold/Hot Rolling dependent on material) |
| Common Materials | Carbon Steel (Q345, A36, S355), Wear-Resistant Steel (Hardox), High-Strength Low-Alloy (HSLA). |
| Machining Tolerances | Precision boring and flange facing for massive mating surfaces, down to ±0.05 mm on large diameters. |
| Testing & NDT | 100% Ultrasonic Testing (UT) & Radiographic Testing (RT) on critical full-penetration welds. |
Our Work: Heavy Housings
The Manufacturing Process
Using our massive multi-roll plate bending machines, we cold or hot roll thick steel plates into perfectly cylindrical or conical casings, ensuring minimal material distortion.
Sections are joined using automated SAW column and boom manipulators. This guarantees deep penetration, defect-free welds necessary to withstand immense environmental pressures.
Post-weld, massive housings are placed into our on-site heat treatment furnaces. Once stabilized, our floor-type boring mills machine the mating flanges and critical mounting points.
Housings bound for underground or subsea environments are moved to our state-of-the-art blasting booths and coated with heavy-duty epoxies to ensure decades of corrosion resistance.