Some of the best welders work and train at Colonna's. Put us to work for you.

The Welding Shop supports the Structural/Sheet Metal and Pipe Shops in the installation, removal, upgrade and fabrication of vessels’ structures and distributive systems.

The Welding Shop Personnel are Qualified for Welding of:

• Carbon Steel to Carbon Steel
• Carbon Steel to Stainless Steel
• Clad Welding of Manganese Bronze
• Copper Nickel to Copper Nickel
• Aluminum
• Stainless Steel
• Copper Nickel to Carbon Steel
• Consumable Insert Carbon Steel
• Chromium-Molybdenum Alloy Steel
• P2 Piping Open Butt Joint
• Shaft Weld Repairs
• Clad Welding Hard Surfacing
• Copper Nickel to Nickel Base Alloys
• Stainless Steel Overlay on Carbon Steel
• Stud Automatic Timed Arc
• Shaft Austenitic Stainless Steel Overlay
• Ceramic Refrac-T-Back Tape

Specialized training and experience of shop personnel include Certification and Qualification to weld in accordance with DoD, NAVSEA, ABS, USCG, and AWS certification requirements. Our qualified welding processes include: FCAW, GMAW, GMAWS, GTAW, SAW, SMAW and SW. A staff of NDT inspectors reporting separately to the QA staff who perform both shop and shipboard quality inspections augments the shop.

Major Welding Shop Equipment Includes:

• Powercon Portable single-operator welders (11)
• Miller II 8-Pack welding machines (11)
• Portable Gas Engine Welders (2)
• Miller CP-300 MIG machines for Aluminum (3)
• Miller Syncrowave 300 TIG machines (4)
• Oxweld MIG wire-feeders (4)
• Lincoln LN-25 Wire Feeders (46)
• Bug-O Automatic track welding systems (4)
• Automatic Stiffener Welder – Bug-O w/ Lincoln LN-7 Wire Feeders (1)
• Lincoln LT-7 Submerged Arc Tractors with Power Sources (4)
• Lincoln Multi-welds (32)
• Lincoln Submerged Arc Hand Held System
• Lincoln NA5-S Submerged Arc Systems
• Ransom Turning Rolls for tanks up to 20’ diameter
• Arc-1800 Pro Weld International Stud Welder
• Aggressive 89Kva Heat Treating Machines (2)