Mandrel Bends in Steel, Aluminized Steel, 409 and 304 Stainless Steel. 22 1/2, 45, 90, 180 Degree and our Swan Cut Mandrel Bends. Over 3000 Bends in Stock. Tube and Pipe Bending Services Specializing in Mandrel Bending; Materials Worked with are Aluminum, Mild Steel and Stainless Steel; Mig and Tig Welding and Reverse Engineering Services are Available; Tubing Sizes in Inches: 1.5, 1.75, 1.875, 2, 2.25, 2.5 and 3; Types of Material: Mild Steel, Aluminized Steel & Stainless Steel; Plasma Cutting ...