ASTM A179 ASME SA179 Carbon Steel Seamless U Tube for Heat Exchanger and Condenser
Product Overview
ASTM A179 / ASME SA179 carbon steel seamless U tube is manufactured from low carbon steel seamless tube and processed through precision U bending for shell and tube heat exchanger applications.
The U tube configuration allows thermal expansion compensation within heat exchanger tube bundles, making it commonly used in U-tube heat exchangers, condensers, and boiler feed water heaters.
Manufactured according to ASTM A179 / ASME SA179 requirements, these tubes are produced with controlled chemical composition, mechanical properties, dimensional tolerances, and surface conditions.
Material and Standard
A179 Low Carbon Steel Seamless U Tube
Standard: ASTM A179 / ASME SA179
Material Grade: A179
Material Type: Low Carbon Steel
Tube Type: Seamless U Tube
Manufacturing Process: Cold Drawn Seamless Tube + U Bending
ASTM A179 specifies seamless cold-drawn low carbon steel tubes used for tubular heat exchangers, condensers, and similar heat transfer equipment.
Manufacturing Process
Seamless Tube Production
Raw carbon steel billets are processed into seamless tubes through controlled manufacturing procedures.
Cold Drawing
Cold drawing is applied to achieve:
- Controlled outside diameter
- Accurate wall thickness
- Improved surface quality
U Bending Process
Straight seamless tubes are bent into U shapes according to heat exchanger design requirements.
Key parameters include:
- Tube bending radius
- Straight length
- U bend diameter
- Leg length
Heat Treatment and Inspection
After bending, tubes undergo required processes including:
- Stress relieving (when specified)
- Cleaning
- Dimensional inspection
- Non-destructive testing
Technical Features
Seamless Tube Structure
The seamless construction provides uniform tube geometry without longitudinal weld seams.
U Tube Design
The U-shaped configuration allows tube bundle installation in heat exchangers where thermal expansion needs to be accommodated.
Customized Bending
U tubes can be manufactured according to:
- Heat exchanger drawings
- TEMA requirements
- Customer specifications
Product Specifications
| Item |
Specification |
| Product Name |
ASTM A179 ASME SA179 Carbon Steel Seamless U Tube |
| Standard |
ASTM A179 / ASME SA179 |
| Material Grade |
A179 |
| Material Type |
Low Carbon Steel |
| Tube Type |
Seamless U Tube |
| Manufacturing |
Cold Drawn + U Bending |
| Surface |
Annealed / Cleaned / Customized |
| Application |
Heat Exchanger, Condenser |
Available Dimensions
| Parameter |
Specification |
| Outside Diameter |
Customized |
| Wall Thickness |
Customized |
| Tube Length |
Customized |
| Bend Radius |
Customized |
| U Bend Type |
According to Drawing |
| Surface Condition |
Customized |
Applications
Shell and Tube Heat Exchanger
ASTM A179 U tubes are commonly used in:
- U-tube heat exchangers
- Process heat exchangers
- Industrial cooling equipment
Condenser Equipment
Applications include:
- Power plant condensers
- Surface condensers
- Cooling systems
Boiler Equipment
Used in:
- Boiler feed water heaters
- Thermal power equipment
- Heat recovery systems
Oil Refinery and Chemical Plants
Suitable for:
- Refinery heat exchangers
- Chemical processing equipment
- Industrial thermal systems
Quality Control and Inspection
Inspection procedures may include:
Material Testing
- Chemical composition analysis
- Mechanical property testing
Dimensional Inspection
- Outside diameter measurement
- Wall thickness inspection
- Tube length verification
- Bend radius inspection
Non-Destructive Testing
- Eddy Current Testing (ET)
- Ultrasonic Testing (UT)
- Hydrostatic Testing
Inspection requirements can be adjusted according to project specifications.
Packaging
ASTM A179 / ASME SA179 U tubes are packaged according to export transportation requirements.
Packaging methods:
- Tube bundles
- Protective wrapping
- Wooden cases
- Steel frame packaging
Tube marking may include:
- Standard designation
- Material grade
- Size information
- Heat number
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