Iron pipes are commonly processed in factories using various machines depending on the type and scale of the operation. Here are some of the most common machines used in processing iron pipes:

1. Cutting Machine: This machine is used to cut iron pipes to the required size. It can be a manual, semi-automatic or fully automatic machine. The manual cutting machine uses a hacksaw or rotary saw blade, while the automatic machines use a hydraulic or electric blade. The machine can cut straight or angled cuts, and can also cut multiple pipes at once.
2. Pipe Bending Machine: This machine is used to bend the iron pipes into different shapes and angles. It uses hydraulic or mechanical force to bend the pipes to the desired angle, which can be preset or adjustable. The machine is used to create a variety of shapes and curves that are required for different industrial and architectural applications.
3. Pipe Threading Machine: This machine is used to create threads on the ends of iron pipes to allow for connections with other pipes or fittings. It uses a die set to cut the threads on the pipe, and can be a manual, semi-automatic or fully automatic machine. The machine can also cut threads of different sizes and pitches, and can be adjusted to fit various types of pipes.
4. Pipe Welding Machine: This machine is used to weld iron pipes together to create longer pipes or pipe sections. It uses various types of welding techniques such as arc welding, TIG welding or MIG welding, depending on the type and size of the pipe. The machine can also be used to weld fittings onto the pipes or to weld pipes onto other structures.
5. Pipe Shrinking Machine: The pipe shrinking machine is a hydraulic automatic pipe end processing machine that expands and shrinks the end face of the pipe fittings under normal conditions. It is controlled by an integrated control touch display screen. The pipe fittings can be expanded, shrunk, bulged, and upset by changing the mold. Ribbon and other pipe ends are processed and formed. The pipe shrinking machine is widely used in the processing and forming of pipe fittings, automobile oil pipes, air pipes, water pipes, air-conditioning pipes and other joints. It is an ideal pipe end forming processing equipment.

In addition to the machines listed earlier, according to the pipe forming requirements for different products, there are also Pipe Notching Machine and Pipe Chamfering Machine. Overall, these machines play a crucial role in the manufacturing process of iron pipes, and they are designed to provide accuracy, precision, and efficiency in processing iron pipes in factories.

Metal tubes are used in a wide variety of products across different industries due to their strength, durability, and resistance to corrosion. 

1. Plumbing: Pipes produced by these machines can be used for plumbing applications such as water supply, drainage, and sewage systems.
2. Aerospace industry: Metal tubes are used in aircraft components such as hydraulic systems, fuel lines, and heat exchangers.
3. HVAC Systems: Pipes produced by these machines are commonly used for heating, ventilation, and air conditioning (HVAC) systems, including ducts and pipes that carry hot or cold air.
4. Oil and Gas Industry: Pipes produced by these machines are used in the oil and gas industry for transporting oil, gas, and other fluids.
5. Automotive Industry: Pipes produced by these machines are used in the automotive industry for exhaust systems, fuel lines, brake lines, and other applications.
6. Construction Industry: Pipes produced by these machines are used in the construction industry for structural support, water supply, and drainage systems.
7. Industrial and Manufacturing Processes: Pipes produced by these machines are used in various industrial and manufacturing processes, including chemical processing, food and beverage production, and pharmaceutical manufacturing.
8. Furniture: The support legs of most tables, chairs, storage baskets, storage racks and other storage products are made of metal tubes. The common woven collapsible storage baskets on the market use a lot of these parts.