Nelson Fastener Systems Datasheets for Refractory Ferrules

Refractory ferrules are designed to protect boiler tube inlet areas and metal tube sheets in sulfur recovery units (SRUs) used in oil refinery operations. Boiler tube inserts are also used in methane reformers and waste heat boilers (WHB).
Refractory Ferrules: Learn more

Product Name Notes
Ceramic ferrules are an essential part of the standard drawn arc stud welding process. They are designed to encircle the weld stud to protect the weld arc and limit it...
S7X 3/16” “Steerhorn” and S4X “Y” Anchor refractory anchor studs have a special weld end shape. The weld ends of these studs are made by doubling the stud back on...
The rectangular ferrules shown below are used to weld the following stud types: R1P and R1L Rectangular Studs without Holes, R2P Two Tine Rectangular Studs, R5P Strand Support Studs, R6P...
These ferrules have an internal cavity, and are used to weld studs that have a base diameter that is significantly smaller than the outer diameter of the stud. This combination...