The corrosion resistance of carbon steel elbows depends on the alloying elements contained in the steel. Chromium is the basic element for corrosion resistance of carbon steel elbows. When the chromium content in the steel reaches about 1.2%, the chromium interacts with oxygen in the corrosive medium to form an oxide film on the surface of the steel. It can prevent further corrosion of the steel matrix. Stainless steel elbow will not cause corrosion, pitting, rust or wear.

Stainless steel is still one of the strongest metal materials used in construction. Stainless steel elbow has excellent corrosion resistance, so that structural components can maintain the integrity of engineering design for a long time.

The chromium-containing stainless steel elbow also has both mechanical strength and high scalability, making parts easy to process and manufacture, meeting the needs of architects and structural designers. All metals react with oxygen in the atmosphere to form an oxide film on the surface. Stainless steel elbow must be preheated with carbon tubes before leaving the factory to avoid cold cracks during use. After preheating, the heat affected zone of medium carbon steel can be reduced. Improve the plasticity of carbon steel elbows. After the welding is completed, the residual stress can be reduced, and the preheating temperature of different types of steel is also different, but this process is usually completed during the welding process, and the preheating temperature can be adjusted according to the welding requirements.