DIN 28181 P235GH 16Mo3 P215NL X5CrNi18-10 X5CrNiMo17-12-2 Heat Exchanger Tube Welded Steel Tubes For Tubular Heat Exchangers
Dimensions, Material, Specification
DIN 28181 specifies the requirements for welded steel tubes used in tubular heat exchangers. These tubes are designed to withstand high pressures and temperatures, making them suitable for various industrial applications. The dimensions of these tubes typically conform to international standards, ensuring compatibility and reliability in heat exchanger systems.
Key Features
- High Strength: Designed to endure high pressure and temperature.
- Corrosion Resistance: Suitable for various corrosive environments.
- Weldability: Excellent welding characteristics for easy fabrication.
- Durability: Long service life under demanding conditions.
Chemical Composition
| Steel Grade | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Ni (%) | Mo (%) |
| P235GH | 0.12 | 0.55 | 1.40 | 0.025 | 0.015 | - | - | - |
| 16Mo3 | 0.12 | 0.50 | 0.40 | 0.025 | 0.015 | 0.90 | - | 0.30 |
| P215NL | 0.12 | 0.50 | 1.20 | 0.025 | 0.015 | - | - | - |
| X5CrNi18-10 | 0.07 | 0.40 | 2.00 | 0.045 | 0.015 | 18.00 | 8.00 | - |
| X5CrNiMo17-12-2 | 0.07 | 0.40 | 1.50 | 0.045 | 0.015 | 17.00 | 12.00 | 2.50 |
Mechanical Properties
| Steel Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness (HB) |
| P235GH | 235 | 360-510 | 26 | 140-180 |
| 16Mo3 | 250 | 410-550 | 22 | 160-200 |
| P215NL | 235 | 360-510 | 26 | 140-180 |
| X5CrNi18-10 | 210 | 500-700 | 40 | 160-220 |
| X5CrNiMo17-12-2 | 220 | 500-700 | 40 | 160-220 |
Steel Grade
The steel grades specified in DIN 28181 include:
- P235GH: A non-alloy steel grade suitable for pressure vessels and heat exchangers.
- 16Mo3: A chromium-molybdenum alloy steel known for its high-temperature strength.
- P215NL: A low-alloy steel grade with good weldability and toughness.
- X5CrNi18-10: Austenitic stainless steel with excellent corrosion resistance.
- X5CrNiMo17-12-2: Austenitic stainless steel with added molybdenum for enhanced corrosion resistance.
Application
These welded steel tubes are primarily used in:
- Heat Exchangers: For transferring heat between fluids.
- Boilers: In power generation and industrial processes.
- Pressure Vessels: For storing gases and liquids under pressure.
- Chemical Processing: In environments where corrosion resistance is critical.
Possible Alternative Grades
Depending on specific application requirements, alternative grades may include:
- P265GH: Similar to P235GH but with higher strength.
- SAE 304: An alternative austenitic stainless steel with good corrosion resistance.
- SAE 316: Offers better corrosion resistance than 304, especially in chloride environments.
- P355GH: A higher strength alternative for pressure applications.
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The group holds shares in more than ten domestic production entities, whose main products include
seamless steel pipes ( carbon steel and stainless steel), welded pipes ( carbon steel and stainless steel), pipe fittings ( carbon steel and stainless steel), titanium (titanium tubes, titanium rods, titanium cakes, titanium plates, etc.), aluminum (aluminum tubes, aluminum rods, aluminum die casting, aluminum casting, CNC machining), and CNC deep processing of metal materials such as tubes, rods, and casting parts.
Over the past 30 years, the company has been gradually developing new technologies and materials to meet
the growing needs of customers and various diversified needs, exporting to more than 56 countries and still
increasing the number of exporting countries, aiming to help customers to solve the demand for raw materials, and to facilitate one-stop purchasing for customers.
Q: Are you trading company or manufacturer ?
A: manufacturer,also can do trading.
Q: How long is your delivery time?
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
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A: Yes, we could offer the sample for free charge but need pay the cost of freight.
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A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
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DIN 28181 P235GH Heat Exchanger Tube Welded Steel Tubes For Tubular Heat Exchangers-Dimensions Images
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