Butt welding elbow in the incorrect use can produce the phenomenon of corrosion, welding curved hairs students after corrosion, usually for the butt welding elbow pipe wall thinning, local pits and pitting. Butt welding elbow after the corrosion detection methods: leakage flux method was used to detect the basic principle is based on the fundamental features of high permeability of ferromagnetic materials.
Stainless steel elbow won't produce corrosion, pitting, corrosion or wear and tear. Stainless steel or building one of the highest strength of metal materials in the material. Because the stainless steel has good corrosion resistance, so it can make structure parts permanently maintain the integrity of engineering design. Chromium stainless steel also has high mechanical strength and extensibility, easy processing and manufacturing of parts and can meet the needs of architects and structural designers. All metal and atmospheric oxygen in the reaction, formed in the surface oxide film. Unfortunately, in the ordinary carbon steel formed on the oxidation of iron oxide to continue, kept expanding rust, eventually forming holes. Can use paint or resistant to oxidation of the metal (for example, zinc, chromium and nickel) on plating to ensure that the surface of carbon steel, but, as we know, the protection is only a thin film. If the cover was damaged, the following steel began to rust.
