Sumner Internal Fit-Up Clamp, 8–12" Pipe Clamp

The Sumner 784103 Internal Fit-Up Clamp is designed to accurately align and hold pipe sections during welding and fabrication. Covering pipe sizes from 8 to 12 inches, this rugged internal clamp helps ensure proper joint alignment while reducing setup time for high-quality welds.

Built for demanding pipe fabrication and construction environments, the clamp features a durable steel construction with an expanding internal mechanism that securely grips the inside diameter of the pipe for dependable fit-up.

Key Features

• Model 784103 internal fit-up clamp
• Fits 8" through 12" nominal pipe sizes
• Provides accurate internal pipe alignment for welding
• Expanding mechanism securely grips pipe interior
• Heavy-duty steel construction for jobsite durability
• Helps reduce fit-up and welding preparation time
• Designed for repeated use in fabrication and field applications

Construction Details

The clamp utilizes an expanding internal alignment system that centers adjoining pipe sections while providing a secure hold during tack welding and final weld preparation.

Manufactured with rugged steel components to withstand frequent use in pipe fabrication shops, maintenance facilities, and field construction projects.

Designed for smooth operation and reliable alignment across its specified pipe size range.

Important Notes

Designed for use on nominal 8" to 12" pipe.

Verify pipe dimensions and compatibility before use.

Follow all applicable welding and safety procedures during installation and operation.