It is mainly used for conveying gas and heating.

Characteristics: the galvanized pipe contacts with water, and after several years of use, a large number of rust scale and bacteria will be generated in the pipe; Due to welding, the pressure resistance is weak; The inside is rough and uneven, and the pressure drop of the pipe is large; Welding is required during installation; But it's cheap.

. seamless pipe, made of one piece of metal, with no joint on the surface. Materials include ordinary and high-quality carbon structural steel, low-alloy steel, alloy steel, stainless and acid resistant steel, etc. According to the purpose, it can be divided into two categories: general purpose (for water and gas pipelines, structural parts and mechanical parts) and special purpose (for boilers, geological exploration, bearings, acid resistance, etc.).

It is mainly used for petroleum geological drilling pipes, cracking pipes for petrochemical industry, boiler pipes, bearing pipes and high-precision structural steel pipes for automobiles, tractors and aviation.

Characteristics: because it is a one-time molding, it has strong pressure resistance and small internal smooth pressure drop; Welding is required during installation: heavy weight.

Aluminum alloy pipe, due to its low density and high strength, is close to or higher than high-quality steel and has good plasticity. It can be processed into various profiles with excellent conductivity, thermal conductivity and corrosion resistance. Due to different production processes, aluminum alloy pipes are divided into slotted pipes and seamless pipes. The welding of aluminum alloy instead of steel plate material can reduce the structural weight by more than 50%. However, due to the expansion coefficient, aluminum alloy pipes are easy to fall off when the temperature difference is large. The imported galvanized pipe is very easy to use, but the price is expensive.

It is widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry.

Features: high strength and light weight, smooth inside and small pressure drop; Welding is not required for installation.

Thin wall stainless steel pipe is a hollow long round steel. When the bending and torsion strength are the same, the weight is light. Stainless steel is divided into seamless pipe and welded pipe according to production mode.

Widely used in petroleum, chemical, medical, food, light industry, mechanical instruments and other industrial transmission pipelines and mechanical results components.

Features: high strength and light weight, smooth inside and small pressure drop; Welding is not required for installation. From the perspective of energy saving, environmental protection and healthy application, the pipe is the main force of fluid transportation in the future. In the field of water affairs and water supply, major promotion has been started.