20G carbon steel elbow elbow spot steel manufacturers generally higher carbon content the greater hardness, strength is also higher, but lower ductility. Mainly refers to the mechanical properties depending on the steel carbon content, and generally do not add a large amount of alloying elements of the steel, sometimes referred to as carbon steel or carbon steel. Carbon steel, also known as carbon steel, carbon content refers WC less than 2% of the iron-carbon alloys. Steel stamping elbow purposes: to connect two identical nominal diameter pipe, so that the line for 90-degree turn. Standard: ISO, DIN, SMS, 3A Temperature: -20 ~ 232 ℃ Shell material: carbon steel, stainless steel, alloy steel Suitable medium: gas, liquid and steam