Carbon steel pipe has good corrosion resistance, pressure bearing capacity and machinability, and is widely used in many fields.
1. Pipes for mechanical engineering. Such as airline structural tubes, automobile half shaft tubes, transmission shaft tubes, large tractor structural tubes for vehicles, tractor water cooler tubes, rectangular square tubes and rectangular tubes for agricultural locomotives, transformer tubes and rolling bearing tubes, etc.
2. Drilling pipes for petroleum geological environment. Such as: oil drilling pipes, oil drilling pipes (kelly and hexagonal drill pipes), drill jacks, oil pipelines, oil waterproof casings and various tee joints, geological environment drilling pipes (core pipes, waterproof casings, active drilling rods, drill jacks, hoops and pin connectors, etc.).
3. Chemical pipes. Such as: petroleum cracking pipes, pipes for heat exchangers and pipelines of chemical machinery and equipment, stainless steel acid-resistant pipes, air-conditioning pipes for organic fertilizers and pipes for transporting chemical plant materials, etc.
4. Tubes for pipelines. Such as: water, gas pipes, seamless pipes for compressed air pipes, oil pipelines, pipes for oil and gas main lines. Leading pipes for agricultural irrigation water and pipes for sprinkler irrigation equipment, etc.
5. Pipes for thermal equipment. Such as boiling water pipes and saturated steam pipes used in general heating furnaces, overheating pipes, large smoke pipes, small exhaust pipes, arch brick pipes and continuous high-temperature alloy steel pipes used in electric locomotive heating furnaces.
6. Managed by other departments. Such as: tubes for utensils (tubes for liquefied gas cylinders and general utensils), tubes for instruments and meters, tubes for watch cases, injection needles and tubes for medical machinery, etc.

The main difference between cast iron pipes and carbon steel pipe is that they have different uses, different characteristics and different classifications.
1. Cast iron pipes with different uses are suitable for domestic drainage pipes, rainwater pipes, industrial waste water pipes and raindrop pipes in the interior of civil and industrial buildings that are newly built, expanded, and reconstructed and connected by clamps. Carbon steel pipe are used for conveying fluids and powder solids, exchanging heat energy, manufacturing mechanical parts and containers, and are an economical type of steel. The use of steel pipes to manufacture space trusses, columns and mechanical supports of building structures can reduce weight, save 20-40% of metal, and realize industrialized mechanized construction.
2. Different features, cast iron pipe have the advantages of safe and reliable operation, low damage rate, convenient construction and maintenance, and excellent anti-corrosion performance.
In addition, carbon steel pipe is a steel pipe welded by coils. Its processing is simple, but its life span is about 20-30 years, and the price is comparable to that of ductile cast iron pipes. Cast iron pipes are cast iron pipes cast by high-speed centrifuges. They are resistant to corrosion and pressure for more than 70 years. They are generally used as underground water and gas pipelines in cities.


