Welding is only one part of metalworking. You also can cut steel, using oxygen/acetylene equipment with a special head called a cutting torch. Cutting torches come as part of many consumer-grade gas ...

Mild steel - used for bike frames, car body panels and fixings (nuts, bolts, screws and nails) An alloy that is grey and smooth, rusts if not protected Ductile and tough, easy to form, braze and weld, ...