The 180D elbow products include cast iron, stainless steel, alloy steel, malleable cast iron, carbon steel, non-ferrous metals and plastics. The ways to connect pipes are: hot melt connection, electrofusion connection, direct welding (the most common way) flange connection, thread Connections and socket connections can be divided into casting elbows, welding elbows, stamping elbows, butt-welding elbows, etc. according to the production process.

The forming process of hot-push 180D elbow products has uniform wall thickness, beautiful appearance and continuous operation. It is suitable for mass production. It has become the main forming method for carbon steel and alloy steel elbows. It is also suitable for the forming of certain specifications of stainless steel elbows.
Stamping 180D elbow products is the earliest forming process used in the mass production of seamless elbows. It has been replaced by hot push or other forming processes in the production of general specifications of elbows. However, in some specifications of elbows, its output Smaller, too thick or too thin wall thickness, 180D elbow products are still used when there are special requirements, the elbow stamping and forming adopts the tube blank with the same outer diameter as the elbow, and it is directly pressed into the mold with a press.