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Introduction
DIN 28180 covers straight seamless
steel tubes with plain ends for tubular heat exchangers, primarily used in
process engineering plants. The current DIN 28180:2007-09 edition specifies
dimensions and materials for seamless tubes manufactured from non-alloy, alloy,
and stainless steels.
DIN 28180 seamless steel
tubes are used in heat exchangers, condensers, process equipment, chemical
plants, petrochemical facilities, power generation systems, and other
industrial heat-transfer applications. The standard also specifies dimensions,
dimensional tolerances, materials, and related ordering requirements.
Ladhani Metal Corporation is
a manufacturer, supplier, and exporter of DIN 28180 Seamless Steel Tubes,
supplying tubes in various steel grades, sizes, wall thicknesses, lengths, and
customized dimensions for heat exchanger and industrial applications worldwide.
Applicable Standard
Standard Specification: DIN
28180:2007-09
Organization: Deutsches
Institut für Normung (DIN)
Title: Seamless Steel Tubes
for Tubular Heat Exchangers – Dimensions and Materials
The current edition applies
to straight seamless tubes with plain ends made from non-alloy, alloy, and
stainless steels for tubular heat exchangers used predominantly in process
engineering.
Forms of Supply
• Seamless Steel Tubes
• Heat Exchanger Tubes
• Tubular Heat Exchanger Tubes
• Straight Plain-End Tubes
• Carbon Steel Tubes
• Alloy Steel Tubes
• Stainless Steel Tubes
• Cold Drawn Tubes
• Precision Tubes
• Custom Cut Tubes
Supply Condition
• Seamless Condition
• Hot Finished Condition
• Cold Drawn Condition
• Annealed Condition
• Normalized Condition
• Solution Annealed Condition
• Heat Treated Condition
Surface Finish
• Mill Finish
• Bright Finish
• Cold Drawn Finish
• Pickled Finish
• Passivated Finish
• Smooth Finish
• Precision Finished Surface
Standard Sizes
Seamless Steel Tubes
Outside Diameter: Common heat
exchanger sizes include approximately 16 mm to 51 mm
Wall Thickness: Approximately
1.2 mm to 5 mm in commonly listed heat exchanger dimensions
Length: Available in standard
and customer-required lengths
DIN 28180 specifies outside
diameters, wall thicknesses, lengths, dimensional tolerances, and related mass
requirements for the tubes.
Custom sizes, lengths, wall
thicknesses, and surface finishes are available according to customer
requirements.
Grades Covered Under DIN 28180
13CrMo4-4 | 15Mo3 | St35.8 |
St37.0 | TTSt35N
Chemical Composition of DIN 28180
|
Grade |
C % |
Si % |
Mn % |
P % |
S % |
Cr % |
Mo % |
|
13CrMo4-4 |
0.10–0.17 |
0.10–0.35 |
0.40–0.70 |
≤0.035 |
≤0.035 |
0.70–1.15 |
0.40–0.60 |
|
15Mo3 |
0.12–0.20 |
0.10–0.35 |
0.40–0.80 |
≤0.035 |
≤0.035 |
≤0.30 |
0.25–0.35 |
|
St35.8 |
≤0.17 |
≤0.35 |
0.40–0.80 |
≤0.035 |
≤0.035 |
— |
— |
|
St37.0 |
≤0.17 |
≤0.35 |
≤1.20 |
≤0.045 |
≤0.045 |
— |
— |
|
TTSt35N |
≤0.17 |
≤0.35 |
0.40–0.80 |
≤0.035 |
≤0.035 |
— |
— |
Mechanical Properties of DIN 28180
|
Grade |
Tensile Strength MPa |
Yield Strength MPa |
Elongation % |
|
13CrMo4-4 |
440–590 |
≥280 |
≥22 |
|
15Mo3 |
440–590 |
≥280 |
≥22 |
|
St35.8 |
360–480 |
≥235 |
≥25 |
|
St37.0 |
340–470 |
≥235 |
≥25 |
|
TTSt35N |
360–480 |
≥235 |
≥25 |
These are the grade-specific
values to use in the article; exact requirements can vary with tube size, wall
thickness, heat-treatment condition, and the applicable edition/material
specification.
Key Features of DIN 28180 Seamless Steel Tubes
•
Seamless construction
• Excellent dimensional accuracy
• Reliable heat transfer performance
• Good mechanical strength
• Suitable for pressure service
• Available in carbon, alloy, and stainless steels
• Excellent tube integrity
• Good corrosion resistance depending on grade
• Suitable for process engineering
• Long service life
Applications of DIN 28180 Seamless Steel Tubes
Heat Exchanger Industry
• Tubular Heat Exchangers
• Shell and Tube Heat Exchangers
• Heat Recovery Equipment
• Process Heat Exchangers
• Cooling Systems
Chemical & Petrochemical Industry
• Process Equipment
• Chemical Processing Plants
• Petrochemical Equipment
• Condensers
• Process Cooling Systems
Power Generation Industry
• Heat Recovery Systems
• Condenser Equipment
• Cooling Systems
• Boiler Auxiliary Equipment
• Thermal Process Equipment
Oil & Gas Industry
• Process Heat Exchangers
• Refinery Equipment
• Hydrocarbon Processing Systems
• Cooling Equipment
General Industrial Applications
• Process Engineering
Equipment
• Industrial Heat Transfer Systems
• Fluid Heating Systems
• Industrial Cooling Equipment
• Engineering Equipment
Fabrication and Welding
DIN 28180 seamless steel
tubes offer good fabrication characteristics depending on the selected material
grade.
• Suitable for tube bending
• Good forming characteristics
• Suitable for machining
• Suitable for heat exchanger fabrication
• Reliable dimensional stability
• Suitable for custom fabrication
• Weldability depends on the selected steel grade
Proper fabrication and
welding procedures should be followed according to the applicable material
specification.
Heat Treatment
Heat treatment depends on the
selected material grade and applicable technical delivery requirements.
• Normalizing improves
structural uniformity
• Annealing improves ductility
• Heat treatment provides consistent mechanical properties
• Solution annealing is applicable to suitable stainless steel grades
• Controlled heat treatment supports reliable service performance
Advantages of DIN 28180 Seamless Steel Tubes
• Excellent heat transfer
capability
• Seamless tube construction
• Reliable mechanical performance
• High dimensional accuracy
• Suitable for tubular heat exchangers
• Available in multiple material groups
• Good pressure resistance
• Long operational life
• Suitable for process engineering applications
• Reliable performance in industrial heat-transfer systems
Conclusion
DIN 28180 Seamless Steel
Tubes are designed for tubular heat exchangers predominantly used in process
engineering plants. The current DIN 28180:2007-09 standard covers straight seamless
tubes with plain ends manufactured from non-alloy, alloy, and stainless steels
and specifies dimensions and materials.
Ladhani Metal Corporation supplies DIN 28180 Seamless Steel Tubes in various material grades, sizes, wall thicknesses, lengths, surface finishes, and customized dimensions, providing reliable tubing solutions for heat exchangers, condensers, chemical plants, petrochemical facilities, power generation, and industrial process equipment worldwide.
FOR REQUIREMENT OF THIS GRADE
OR FOR DETAIL CONTACT US AT :-
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