Carbon & Alloy Steel Heat Transfer Tubes
Carbon and ferritic alloy steel tubes for heat exchangers, condensers and selected elevated-temperature heat-transfer applications.
DLSS supplies ASTM A179 / ASME SA179 seamless cold-drawn low-carbon steel heat exchanger tubes and selected ASTM A213 / ASME SA213 ferritic alloy-steel T-Series tubes, with straight, U-bend, customized long-length and finned configurations available according to project requirements.
- Carbon Steel — ASTM A179 / ASME SA179
- Ferritic Alloy Steel — Selected ASTM A213 T-Series
- Tube Configurations — Straight · U-Bend · Long Length · Finned
- Inspection Support — Hydro · NDE · Dimensional · EN 10204 3.1 / 3.2
ASTM A179
Seamless cold-drawn low-carbon steel
A213 T-Series
Selected ferritic alloy-steel grades
Special Tube Forms
U-Bend · Long Length · Integral Fin
Inspection Support
Hydro · NDE · Dimensional · TPI
Steel Tube Solutions for Industrial Heat Transfer
Carbon and alloy steel tubes remain widely used in industrial heat-transfer equipment where mechanical reliability, thermal performance, operating temperature and project economics must be considered together.
ASTM A179 / ASME SA179 is commonly specified for seamless cold-drawn low-carbon steel tubes used in tubular heat exchangers, condensers and similar heat-transfer equipment.
For applications requiring alloy steel and increased temperature capability, selected ASTM A213 / ASME SA213 ferritic T-Series grades can be considered according to the equipment design and project specification.
Material and standard selection should consider:
Operating temperature · Design pressure · Process fluid · Corrosion conditions · Heat-transfer duty · Minimum-wall or average-wall requirement · Heat treatment · Tube form · NDE requirements · Applicable design code · Expected service life
DLSS supports projects from specification review and material confirmation through tube supply, U-bending, finning, inspection, documentation, packing and delivery.
Heat Exchanger Service
Tube solutions for process heat exchangers and coolers.
Condenser Service
A179 tube supply for condenser and heat-transfer equipment.
Elevated-Temperature Options
Selected A213 ferritic alloy-steel grades.
Project Inspection
Mechanical testing, pressure testing, NDE and documentation.
Carbon Steel Heat Exchanger Tubes
ASTM A179 / ASME SA179
Seamless Cold-Drawn Low-Carbon Steel Heat Exchanger Tubes
ASTM A179 / ASME SA179 tubes are designed for tubular heat exchangers, condensers and similar heat-transfer equipment requiring seamless cold-drawn low-carbon steel tubing.
Key Product Characteristics
- Seamless construction
- Cold-drawn manufacturing
- Low-carbon steel
- Minimum-wall-thickness specification
- Heat exchanger and condenser service
- Suitable for straight and project-specific U-bend configurations
- Long-length requirements can be reviewed
- Mechanical and pressure testing according to specification
Typical Applications
Shell & Tube Heat Exchangers · Condensers · Process Coolers · Industrial Heat Transfer
Available Configurations
Straight · U-Bend · Long Length · Integral Finned
Ferritic Alloy Steel Heat-Transfer Tubes
ASTM A213 / ASME SA213 T-Series
Selected ASTM A213 / ASME SA213 ferritic alloy-steel T-Series grades can be supplied for heat-transfer equipment requiring project-specific combinations of elevated-temperature capability, mechanical strength and alloy content.
Common Grades Available for Review
H3 — T5 ：Chromium-molybdenum ferritic alloy steel for selected elevated-temperature heat-transfer applications.
H3 — T9 ：Higher-chromium ferritic alloy steel for project-specific high-temperature service.
H3 — T11 ：Cr-Mo alloy steel widely specified for selected thermal and process applications.
H3 — T12 ：Ferritic Cr-Mo alloy steel for elevated-temperature service.
H3 — T22 ：Higher-alloy Cr-Mo grade for demanding process and elevated-temperature applications.
H3 — T91 ：High-alloy ferritic steel for selected high-temperature and high-pressure applications.
Material Selection Notice
The correct T-Series grade should be selected according to the equipment design, operating temperature, pressure, heat treatment and applicable project specification.
ASTM A179 or ASTM A213 T-Series?
| Item | ASTM A179 | ASTM A213 T-Series |
|---|---|---|
| Material Family | Low-Carbon Steel | Ferritic Alloy Steel |
| Manufacturing | Seamless Cold Drawn | Seamless |
| Main Product Focus | Heat Exchangers & Condensers | Selected Elevated-Temperature Heat Transfer |
| Typical Grades | A179 | T5 / T9 / T11 / T12 / T22 / T91 |
| Alloy Content | Low Carbon | Cr-Mo / Alloyed Ferritic Grades |
| Wall Basis | Minimum Wall | Minimum / Average Wall where applicable |
| Heat Treatment | According to standard | Grade-specific |
| Selection Basis | Process & design conditions | Temperature / pressure / design code |
Minimum Wall Thickness vs Average Wall Thickness
Always state “Minimum WT” or “Average WT” clearly in the RFQ.
ASTM A179
Minimum Wall ThicknessASTM A179 is specified on a minimum-wall-thickness basis.
ASTM A213
Minimum Wall / Average WallDepending on the applicable product requirement and purchase order, A213 tubing can involve minimum-wall or average-wall requirements.
Why Wall Basis Matters
It affects:
Tube weight · Actual minimum metal thickness · Dimensional acceptance · Tube expansion · Project quantity · Manufacturing tolerance · Inspection criteria · Final cost
Available Carbon & Alloy Steel Tube Forms
Different condenser and exchanger designs require different tube configurations.
Straight Heat Exchanger Tubes
Straight tubes supplied according to the required material standard, OD, wall thickness, length and inspection requirements.
Typical Use
Heat Exchangers · Condensers · Process Coolers
U-Bend Heat Exchanger Tubes
Drawing-based U-bend tube supply for shell & tube heat exchangers requiring thermal expansion compensation.
Parameters We Can Review
Tube OD · Wall Thickness · Developed Length · Straight-Leg Length · Bend Radius · Tube Pitch · Wall Thinning · Ovality · Heat Treatment · Inspection Requirement
Long Length Heat Exchanger Tubes
Customized long-length tubes for heat exchanger bundles requiring specific project lengths and reduced tube joints.
Project Parameters
Grade · OD · WT · Length · Straightness · Packing · Transportation
Integral Finned Tubes
Integral finned carbon steel tubes for applications requiring increased heat-transfer surface area.
Parameters We Can Review
Base Tube OD · Wall Thickness · Fin Root Diameter · Fin Height · Fin Thickness · Fin Density / Pitch · Finned Length · Unfinned Length · Residual Wall Thickness
Carbon & Alloy Steel Tube Specifications
| Specification | Available Options |
|---|---|
| Material Family | Low-Carbon Steel / Ferritic Alloy Steel |
| Core Standards | ASTM A179 / ASTM A213 |
| Construction | Seamless |
| Optional Welded Carbon Steel | ASTM A214 where applicable |
| Tube Form | Straight / U-Bend / Long Length / Finned |
| Outside Diameter | Standard & Project-Specified |
| Wall Thickness | Minimum WT / Average WT where permitted |
| Length | Fixed / Cut / Customized Long Length |
| Heat Treatment | According to grade and product standard |
| Surface Condition | Bare / Oiled / Project Requirement |
| End Condition | Plain / Cut / Protected |
| Testing | Hydro / NDE / Mechanical / Dimensional |
| Inspection | In-House / Third Party |
| Documentation | MTC / EN 10204 3.1 / 3.2 |
| Packing | Bundles / Wooden Cases / Project Packing |
Carbon & Alloy Steel Heat-Transfer Tube Standards
ASTM A179 / ASME SA179
Seamless cold-drawn low-carbon steel heat-exchanger and condenser tubes.
ASTM A213 / ASME SA213
Seamless ferritic and austenitic alloy-steel boiler, superheater and heat-exchanger tubes.
ASTM A450 / A450M
ASTM A450 is a general requirements specification, not a separate tube material.
ASTM A498 / A498M
Integral Finned Carbon Steel TubesStandard covering applicable carbon steel heat-transfer tubes with integral enhanced surfaces.
ASTM A214 / ASME SA214
Electric-resistance-welded carbon steel heat-exchanger and condenser tubes.
Carbon & Alloy Steel Heat-Transfer Tube Applications
Heat Exchanger Manufacturers
Tube supply for shell & tube heat exchanger fabrication, replacement bundles and retubing projects.
Power Plants
Selected condenser, heater and high-temperature heat-transfer tube requirements.
Oil, Gas & Petrochemical
Carbon and alloy steel tube solutions for selected process heat-transfer equipment.
Process Heaters
Ferritic alloy-steel T-Series materials for selected elevated-temperature applications.
Emergency Replacement
Long-length, U-bend and replacement tube requirements for shutdown and retubing projects.
Refineries
Tube materials for refinery heat exchangers, process coolers and elevated-temperature systems.
Testing, Inspection & Documentation
ET
Eddy Current Testing
UT
Ultrasonic Testing
PMI
Positive Material Identification
Hydro
Hydrostatic Testing
Dimensional Inspection
OD / WT / Length
Documentation
Reports & Certificates EN 10204 3.1 / 3.2
Project Documentation Support
- EN 10204 3.1 / 3.2 Certificates
- MTC (Mill Test Certificate)
- PMI Report
- ET / UT Reports
- Dimensional Reports
- Packing List & More
Complete documentation for seamless approvals and traceability.
Why DLSS for Carbon & Alloy Steel Heat-Transfer Tubes?
Specification-Focused Review
Material grade, product standard, wall basis, dimensions and inspection requirements reviewed before production.
Long-Length Capability
Project-specific long tubes can be evaluated according to grade, dimensions, manufacturing and transportation requirements.
U-Bending Support
Drawing-based review of straight-leg length, bend radius, wall thinning, ovality and inspection requirements.
Finned Tube Capability
Fin geometry, residual wall thickness, density and unfinned sections reviewed according to project requirements.
Inspection & Traceability
Heat-number traceability, testing documentation and third-party inspection support from production through shipment.
FAQ
What carbon steel heat exchanger tubes does DLSS supply?
What alloy steel grades are available?
Is ASTM A179 minimum wall or average wall?
Can you supply U-bend, long-length or finned tubes?
What inspection and documentation can be provided?
Carbon & Alloy Steel Tube Technical Resources
ASTM A179 Tube Standard
Minimum wall, manufacturing, dimensions and testing requirements.
ASTM A213 T-Series
Ferritic alloy grades, heat treatment and testing requirements.
Minimum WT vs Average WT
Understand wall-thickness designation before ordering tubes.
ASTM A179 vs A214
Compare seamless cold-drawn A179 and ERW A214 heat exchanger tubes.
T11 vs T22
Compare selected Cr-Mo ferritic alloy-steel tube grades.
ASTM A498 Finned Tubes
Integral enhanced-surface carbon steel heat exchanger tube requirements.