Large-Diameter Forming

Large-diameter tank heads often come with unique challenges—nonstandard sizes, tight schedules and limited tooling options. Our dished and flanged (bump & spun) forming process is designed specifically to handle those demands, supporting heads up to 300″ in diameter and 1.5″ thick.

This approach gives fabricators flexibility without sacrificing quality or reliability.

Instead of relying on fixed dies, dished and flanged forming gradually shapes the head through controlled forming passes. This allows us to accommodate a wide range of diameters and profiles while avoiding the delays and costs associated with custom tooling.

It’s a proven solution for large or unconventional heads where adaptability matters as much as performance.

• Diameter Range: Up to 300″
• Thickness Range: Up to 1.5″
• Forming Method: Dished and flanged (bump & spun)
• Tooling: Minimal or no dedicated tooling required
• Production Locations: Available at all three CMF facilities

By offering this capability across multiple plants, we ensure consistent capacity and regional support for large-diameter projects.

• Greater design flexibility for evolving or nonstandard specs
• Efficient short-run production without excessive setup costs
• Reliable geometry control for oversized heads
• Nationwide availability for scheduling and logistics flexibility