Advanced Metalworking Solutions for
Naval Systems that Go in Harm's Way

Automated Pipe Production Methods Anticipated to Save $7M on Several Ship Classes


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The automation/mechanization of pipe fabrication processes for shipboard applications will improve quality and reduce costs on multiple naval platforms. Ingalls photo

S2565 Pipe Production Automation Methods


There are several thousand pipe welds on Navy ships, with each weld requiring a significant effort to produce. The Navy Metalworking Center (NMC) conducted a project to investigate and develop improved methods to reduce the cost of producing these welds. The project team developed portable mechanized tools and automation technologies to improve pipe fitting, welding, and installation on several naval platforms manufactured at Ingalls Shipbuilding (Ingalls), including the LHA(R), LPD, and DDG 51 classes, as well as the U.S. Coast Guard’s National Security Cutter (NSC).


Process Improvement:

NMC worked with Ingalls personnel to identify, develop, and enhance several technologies and tools to support automation / mechanization of pipe production processes at Ingalls. Specifically, the three main technologies investigated were a) automated pipe welding with an orbital welding system, b) enhanced brazing techniques using a ring burner and a hook-style torch tip, and c) improved fitting and rounding of pipe ends leveraging an assortment of both commercial and prototype tools. Ingalls craftsmen tested and evaluated the technologies and tools throughout the project. The most effective methods were down-selected for time trials and subsequent implementation.

Implementation and Technology Transfer:

Several commercial and prototype fitting tools are being transitioned and pursued for implementation. NMC and Ingalls identified, developed, tested, and refined several unique pipe fitting and rounding tools. NMC also identified several potential commercialization partners and obtained budgetary pricing to support Ingalls’ capital expenditure requests. Ingalls has implemented the three pipe fitting and alignment tools (the custom split-ring clamps, custom enhanced plug rounding tool, and the Intercon Enterprises pipe alignment clamp) that were transitioned at the project’s completion. Ingalls plans to purchase more of these tools for use throughout the shipyard on all platforms. Further development is required before the automated welding system and brazing technologies can be implemented.

Expected Benefits:

Improved pipe production tools and technologies are expected to reduce the cost of manufacturing thin wall piping system components at Ingalls. Based on pilot studies performed, the total targeted five-year cost savings is approximately $7M for the hulls constructed at Ingalls (LHA, DDG, LPD and NSC).


PMS 377 NSWCCD Ingalls NMC ONR Navy ManTech

For more information, contact:
Mr. Robert E. Akans
Senior Technical Director