Products Description
Our Advantages
1. Seamless Structure
- Our 25CrMo4 tubes are manufactured using a cold drawing process, resulting in seamless tubes with uniform wall thickness and excellent compressive strength.
- The tubes undergo eddy current testing, hydrostatic testing, and ultrasonic testing to ensure they are free from internal defects and reduce the risk of leakage or failure under cyclic pressure.
2. High Mechanical Strength and Fatigue Resistance
- Our tubes are made from high-quality 25CrMo4 material and, after appropriate heat treatment, possess high mechanical strength and excellent fatigue resistance.
- The tubes undergo rigorous chemical composition testing to ensure uniform material composition, conforming to EN 10216-2 standards.
3. Good Weldability and Machinability
- Our 25CrMo4 tubes are available in +SR, +A, or +QT conditions and can be customized for various applications, whether for general boiler piping, welded components, or high-pressure and high-temperature applications.
- The tubes have good weldability and machinability, supporting on-site welding and factory assembly, and can be cut, drilled, turned, or milled.
4. High Temperature and High Pressure Reliability
- Our tubes maintain tensile strength and yield strength at 400–550°C and can withstand thermal fatigue caused by repeated heating and cooling cycles.
- Through precision cold drawing and heat treatment processes, our tubes possess excellent high-pressure resistance, ensuring safe and reliable operation in boilers, heat exchangers, and other high-pressure applications.
5. Excellent Surface Quality and Dimensional Accuracy
- The tubes undergo cold drawing, resulting in a high degree of surface smoothness. Surface treatments such as pickling and passivation, and sandblasting are available. The tubes are also oiled to prevent damage during storage and transportation.
- The tubes undergo rigorous dimensional inspection to ensure that their outer diameter, wall thickness, length, straightness, and roundness conform to EN 10216-2 standards or customer requirements.
application areas
- Industrial boilers
- Heat exchangers
- Superheaters and economizers
- Pressure vessels
- Thermal power plants
- High-temperature fluid and steam pipelines
- Petrochemical and energy equipment
Chemical Composition
| Element | C (%) | Si (%) | Mn (%) | Cr (%) | Mo (%) |
|---|---|---|---|---|---|
| 26Mo2 | 0.22–0.29 | ≤0.40 | 0.60–0.90 | ≤0.30 | 0.25–0.35 |
| 25CrMo4 | 0.22–0.29 | ≤0.40 | 0.60–0.90 | 0.90–1.20 | 0.15–0.30 |
| 42CrMo4 | 0.38–0.45 | ≤0.40 | 0.60–0.90 | 0.90–1.20 | 0.15–0.30 |
Mechanical Properties
| Property | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Impact Toughness |
|---|---|---|---|---|
| 26Mo2 | 500–650 | ≥300 | ≥20 | Good |
| 25CrMo4 | 800–1000 | ≥650 | ≥12 | Good |
| 42CrMo4 | 900–1100 | ≥750 | ≥12 | Excellent |
Possible Alternative Grades
| Alternative Grades | Reasons |
| 16Mo3 | Designed specifically for medium temperature and pressure conditions, commonly used in industrial boilers, heat exchangers, pressure vessels, and economizers operating at medium temperatures. |
| T11 / T22 | Features proven high-temperature strength, pressure resistance, and global code compliance, suitable for boilers and heat exchangers in petrochemical plants, refineries, and power plants. |
| 10CrMo9-10 | Offers excellent creep resistance and long-term structural stability, suitable for power plant boilers, steam pipes, and high-pressure headers exposed to high temperatures and high stress conditions for extended periods. |
Products Show
Testing Equipment
Eddy Current Flaw Detector
Hydraulic Universal Testing Machine
Intergranular Corrosion Tester
Factory Equipment
Pickling equipment
Polishing equipment
Cold drawing equipment
Products Package
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