Steel pipe

**Steel Pipe**

**Introduction to Steel Pipe**

Steel pipe is one of the most widely used steel products, manufactured as a hollow section in various diameters and thicknesses. It is used for fluid transmission, metal structure fabrication, and industrial applications.

**Types of Steel Pipe**

– **Welded pipe:** Made from steel sheet through bending and longitudinal welding.
– **Seamless pipe (Mannesmann):** Produced without a weld seam, suitable for high-pressure applications.
– **Galvanized pipe:** Coated with zinc for corrosion resistance.
– **Industrial and construction pipe:** Used in structural frameworks and steel buildings.

**Pipe Production Process**

Steel pipes are manufactured in two main ways. In the welded method, steel sheet is bent and the seam is welded. In the seamless method, a steel billet is pierced and rolled through an extrusion or rolling process to form a pipe — resulting in higher strength.

**Applications of Steel Pipe**

– Water, gas, and oil transmission
– Utility and industrial piping systems
– Construction of metal structures and greenhouses
– Petrochemical and power plant industries

**Key Features of Steel Pipe**

– High pressure and temperature tolerance
– Variety of diameters and thicknesses
– Easy weldability and connection

**Factors Affecting Steel Pipe Prices**

The price of steel pipe depends on the type of production (welded or seamless), thickness, diameter, manufacturing standard, brand, raw material prices (sheet or billet), and market conditions. Fluctuations in exchange rates and transportation costs also play a role in the final price.