Seamless Steel Pipe

1. Hot Rolled Seamless Pipe
● Manufacturing process：Hot rolled seamless pipe is a circular hollow section formed by piercing and rolling circular steel billets at high temperatures.
● Application：Oil pipe, natural gas pipe, oil well drill pipe, oil casing, downhole gas pipeline, steam pipe, compressed air pipe, water supply pipe, chemical equipment, reactor, shipbuilding pipe, aviation cabin pipe, building structural pipe, mechanical pipe, automotive pipe, parts and so on.
● Characteristic：High strength, high temperature resistance, high pressure resistance, corrosion resistance, multiple types of steel, thick wall thickness, large diameter,The surface is somewhat rough.

2. Cold Rolled Seamless Pipe
● Manufacturing process：Cold rolling is to bring the seamless steel pipe into the rolling mill, through the press rolls or extruder rolls on the steel pipe processing, directly obtain the appropriate size of the steel pipe.The processing temperature of cold rolling is lower than the crystallization temperature and is generally carried out at room temperature.

● Application：
Fluid transportation: Cold rolled seamless steel pipes are important pipeline materials for transporting fluids, such as water, oil, natural gas, etc. Due to its seamless structure, the fluid flows more smoothly in the pipeline, reducing fluid resistance and energy loss.

Structural support: Cold rolled seamless steel pipes are often used as support materials for various structures, such as bridges, buildings, towers, etc., due to their high strength and good plasticity. Its excellent mechanical properties and stability make the structure more stable and reliable.

Mechanical manufacturing: In the field of mechanical manufacturing, cold-rolled seamless steel pipes also play an important role. It can serve as a raw material for mechanical parts, such as shafts, sleeves, bearings, etc., providing a solid material foundation for mechanical manufacturing.

● Characteristic：Smaller size, better quality, higher accuracy, thinner wall thickness，smooth and even surface.

3. Cold Drawn Seamless Tube
● Manufacturing process：Cold drawing is the first to extract the appropriate hole mold, and then the heated steel pipe into the mold, by pulling the mold so as to obtain a smaller diameter, higher surface finish of the seamless steel pipe.Cold drawing is carried out in a heated state at a temperature of approximately 800 ° C to 950 ° C.

● Application：Cold-drawn steel pipe has a wide range of uses. Due to its excellent properties such as high strength, high precision, corrosion resistance and high temperature resistance, it can be used in various fields. For example, in the petroleum industry, cold-drawn steel pipe is used to manufacture petrochemical equipment, valves, pumps, etc.; in the electric power industry, cold-drawn steel pipe is used to manufacture pipelines, boilers, heat exchangers, etc.; in the field of construction, cold-drawn steel pipe is used for piling, bridges, high-rise buildings, etc.; in the mechanical manufacturing, cold-drawn steel pipe is used to manufacture mechanical parts, automobile parts, etc.

● Characteristic：Reduced dimensional errors in internal and external diameters, high surface quality, high mechanical properties, and a wide range of shapes.

4. Extruded Seamless Pipe
● Manufacturing process：The extruded seamless tube is about to place the heated tube blank in a closed extrusion cylinder, and the perforated rod moves together with the extrusion rod to extrude the extruded part from the smaller mold hole. This method can produce seamless steel pipes with smaller diameters.

● Application：
Automotive industry: Used to manufacture key components such as automotive engines, chassis, and brake systems, to improve the safety and reliability of automobiles.

Petrochemical industry: Used for manufacturing petroleum pipelines, chemical equipment, etc., capable of withstanding high temperature, high pressure, and corrosive media.

Electricity: Used for manufacturing pipeline systems for power plant boilers and cooling water pipes for nuclear power plants, ensuring long-term stable operation.

Aerospace: Used to manufacture key components such as aircraft fuselage and wings, ensuring the safety and stability of the aircraft.

● Characteristic：
High strength and toughness: Extruded seamless steel pipes have high tensile strength and yield point, as well as good toughness, which can effectively resist various stresses while withstanding large pressures.

Good corrosion resistance: The extruded seamless steel pipe has undergone special anti-corrosion treatment, which has good corrosion resistance and can work stably for a long time in various complex environments.

Good processing performance: The wall of the extruded seamless steel pipe is uniform, the inner and outer surfaces are smooth, and it has good cutting and welding performance, making it easy to process and connect.