Technical Details: CD Welding

The vast majority of industrial manufacturing processes are highly regulated and standardized in today’s technologically advanced world. The International Organization for Standardization (ISO) and many other regulators have established global guidelines that inform manufacturers, distributors, and customers of the quality of available goods and services. ISO approval registrations aren’t an industry requirement, but without a certificate appropriate to a company’s products, management systems, or practices, trusted customers and partners will be difficult to obtain. Northland Fastening Systems (NFS) follows ISO 9001 certificate regulations for the stud welding industry. As a provider of complete stud welding supplies, we understand the importance of quality parts, tools, and other products as well as standardized services. We offer stud welding supplies for drawn arc, short cycle, and CD welding, including tools for rent or purchase, a full variety of studs, and welding accessories. Our customers also benefit from tool repairs and servicing.

CD Welding

Whatever kind of welding operation you use, there are technical details and specifications that are critical to know and follow. For CD welding, in particular, technical details direct everything from the stud requirements to onsite welding conditions. Some basic CD specifications include:


CD studs come in a variety of dimensions that are generally smaller than drawn arc welding studs. CD stud welding utilizes smaller dimension studs, pins, and other fasteners for quick, clean connections that will handle lighter shear loads than drawn arc welds, but meet requirements for food grade equipment, one-sided marking, and rapid operations. Studs come threaded internally or externally, and with partial to full thread specifications. Studs can also be flanged.


CD stud welding does not require the use of ceramic ferrules, fluxes, or shielding gas. The weld is completed with an exact calibration of capacitor discharge generated heat and welding gun pressure. Studs are made from mild steel, stainless steel, aluminum, or brass. They can be plated with copper, nickel, zinc, or other materials for various applications. CD studs can also be annealed when required.


Because the process doesn’t need to use shielding gas or ferrules and because CD stud welding is a rapid, clean operation that results in a strong weld, it’s ideal for automation. CD studs can be loaded quickly and easily into auto feed systems and equipment controlled robotically through CNC software programs. They can also be loaded into a handheld auto feed gun.

Welding conditions:

CD stud welding requires relatively exact conditions for the successful installation of connectors. The tool, power supply, and other equipment need to be capable of welding the diameter, length, and material of your studs. The weld surface should be clean, free from lubricants or dust, and without imperfections like excessive roughness. The tip size, stud diameter, and angle of the tool must also be applied correctly for a good weld.

To learn more about the CD welding process and our selection of welding supplies, contact NFS at (651) 730-7770 or request a quote online.