A178 Tube Manufacturer and Supplier in India
Fin Tubes is a leading A178 Tube Manufacturer and Supplier in India, serving power generation and industrial boiler segments with electric resistance welded carbon steel tubing built for elevated temperature service. Our A178 tubes are produced under strict welding and heat treatment controls, giving customers boiler and superheater tubing that performs reliably under continuous thermal cycling and pressure.
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Overview of A178 Tube
ASTM A178 Tube is manufactured as per ASTM A178 and ASME SA178 standards, available in Grade A with carbon content of 0.06 to 0.18 percent and manganese of 0.27 to 0.63 percent, or Grade C with carbon content up to 0.35 percent and manganese of 0.29 to 1.06 percent, depending on required strength. These tubes are manufactured from carbon steel strip, welded using the electric resistance process, and are built to withstand elevated temperatures and internal pressure found in steam generating equipment, and are typically supplied with tight dimensional and weld quality controls to ensure safe long term operation.
Types of A178 Tubes
SA210Gr A1 Condenser Tube
SA210 Seamless Finned Boiler Tube
SA 210 Grade A1 Seamless Boiler Tube
SA 210 Gr A1 Superheater Tube
SA 210 Gr A1 Steam Boiler Pipe
SA 210 Gr A1 Material U Tube
SA 210 Gr A1 Finned Tube
SA 210 A1 Straight Tube Heat Exchanger
ASME SA210 Gr A1 Bent Boiler Tubes
Technical Data
Specifications of A178 Tubes
| Standard | ASTM A178, ASME SA178 |
|---|---|
| Grade | Grade A, Grade C |
| Type | Electric Resistance Welded (ERW) |
| Outer Diameter | 12.7 mm to 101.6 mm |
| Wall Thickness | 1.2 mm to 6 mm |
| Length | Single Random, Cut Length up to 12 meters |
| Form | Round |
| Condition | As Welded or Annealed |
| Ends | Plain End, Beveled End |
| Application | Boiler and Superheater Tubes |
A178 Tubes Chemical Composition
| Grade | Carbon | Manganese | Phosphorus | Sulfur | Silicon |
|---|---|---|---|---|---|
| ASTM A178 Gr A | 0.06% to 0.18% | 0.27% to 0.63% | 0.035% Max | 0.035% Max | - |
| ASTM A178 Gr C | 0.35% Max | 0.80% Max | 0.035% Max | 0.035% Max | - |
| ASTM A178 Gr D | 0.27% Max | 1.00% to 1.50% | 0.30% Max | 0.015% Max | 0.10% Min |
A178 Tubes Mechanical Properties
| Grade | Tensile Strength (min) | Yield Strength (min) | Elongation (in 2") | Max Hardness |
|---|---|---|---|---|
| ASTM A178 Gr A / SA178A | ksi 47, MPa 325 | ksi 26, MPa 180 | 35 | 77 HRB (Rockwell B) |
| ASTM A178 Gr C / SA178C | ksi 60, MPa 415 | ksi 37, MPa 255 | 30 | 79 HRB (Rockwell B) |
| ASTM A178 Gr D / SA178D | ksi 70, MPa 485 | ksi 40, MPa 275 | 30 | 77 HRB (Rockwell B) |
A178 Tubes OD and Wall Thickness Tolerance
| Outside Diameter (OD) | OD Tolerance | Wall Thickness (S) | Wall Thickness Tolerance |
|---|---|---|---|
| OD less than 50 mm | +/-0.05 mm | S less than 4 mm | +/-12.5% |
| OD greater than 50 mm | +/-1% | 4 mm to 20 mm | +15% / -12.5% |
| Not applicable | Not applicable | S 20 mm or above | +/-12.5% |
Applications
- Power Boilers
- Superheaters
- Industrial Steam Generators
- Waste Heat Recovery Boilers
- Thermal Power Stations
- Process Heating Furnaces
- Cogeneration Plants
- Steam Distribution Systems
Power Generation Plants
Petrochemical Plants
Heat Exchangers
Air Preheaters
Industries We Serve
Boilers
Heat Exchangers
Power Plants
Frequently Asked Questions
Have more questions? Send an enquiry and we will respond within one working day.
A178 tubes are primarily used in stationary power boilers and superheaters where the tubing must handle elevated temperatures and steam pressure over long service periods.
Grade A has lower carbon content and is used for standard boiler duty, while Grade C has higher carbon content, giving greater strength for more demanding thermal applications.
A178 tubes are designed for stationary power boilers and superheaters, and the appropriate grade and wall thickness should be selected based on the specific pressure and temperature conditions.
A178 is intended for boiler and superheater service under thermal and pressure cycling, while A214 is intended for heat exchanger and condenser tubes handling fluid heat transfer duty.
A178 tubes are generally supplied from small to medium outer diameters with a range of wall thickness options, and custom sizes can be produced as per project specification.
Request a Quote for A178 Tube
Fin Tubes manufactures ASTM A178 ERW carbon steel boiler & superheater tubes in India, Grade A & C. Reliable, tested tubing. Get a quote today.