DIN 17175 13CrMo44 Steel Seamless Boiler Tube High Pressure Application

DIN 17175 seamless boiler tube cover several grades: St35.8, St45.8, 15Mo3, 13CrMo44, 10CrMo910. DIN 17175 13CrMo44 seamless boiler tubes are heat-resistant steel tubes commonly used in construction projects, such as boilers, pipelines, and pressure vessels, where high-temperature resistance and durability are essential.

DIN 17175 Steel Seamless Tube Manufacturing process:

A. Hot Rolling:

• A billet (solid cylindrical steel block) is heated to a high temperature.
• The billet is pierced and elongated into a hollow shape with the help of a mandrel.
• The tube is rolled into the specified dimensions and reduced for uniform wall thickness.

B. Cold Drawing (Optional):

• To achieve precise dimensions or finer surface finishes, the hot-rolled tubes may undergo a cold drawing process.
• In this process, the tube is pulled (drawn) through a die to reduce its diameter and achieve tighter tolerances.

DIN 17175 Steel Seamless Tube Chemical Composition:

DIN 17175 Steel Seamless Tube Mechanical Property

DIN 17175 Steel Seamless Tube Equivalent Grade

DIN 17175 Steel Seamless Tube Delivery Conditions (heat treatment)

• Normalizing
• Subcritical annealing
• Hardening and tempering with continuous cooling from the hardening temperature and subsequent tempering.
• Hardening and tempering with isothermal transformation.

Applications

1. Boiler Systems

• Purpose: These tubes are ideal for constructing boiler piping systems that operate under high pressure and temperature.
• Use: Superheater tubes, reheater tubes, economizer tubes, and boiler pressure components.
• Example: Steam boilers in power plants and industrial boiler systems.

2. Heat Exchangers

• Purpose: Used in heat exchanger systems for efficient heat transfer in high-temperature environments.
• Use: Ideal for petrochemical industries, oil refineries, and thermal plants.
• Example: Heat transfer tubes in oil refineries.

3. Pressure Vessels

• Purpose: Constructing pressure vessels that handle steam, gases, and fluids at elevated temperatures.
• Use: Delivers durability and strength against high internal pressures.
• Example: Storage tanks for superheated water or chemicals.

4. Power Generation

• Purpose: Backbone material for steam or gas turbines requiring a robust and temperature-resistant medium.
• Use: Power plants utilize them for energy conversion systems.
• Example: Coal-fired and nuclear power plants.

5. Oil & Gas Industry

• Purpose: Suitable for pipelines and tubing systems that transport corrosive fluids or work in extreme temp zones.
• Use: Seamless tubes act as risers, conveyors, and processing units.
• Example: Offshore gas exploration projects.

6. Engineering & Construction

• Purpose: Used in high-temperature industrial processes, piping frameworks, and support structures.
• Use: Framework for furnaces, high-temperature tunnels, etc.
• Example: Industrial kilns & chemical processing reactors.

7. Aerospace Industry

• Purpose: Utilized in high-stress, high-temperature environments.
• Use: Structural parts and piping systems in aerospace vehicles.
• Example: High-temperature exhaust and heating systems.