EER Carbon Steel Tubes For Boilers And Superheaters
Astm a178 tubes offer reliable, cost-effective erw carbon steel solutions for boilers, superheaters, heat exchangers, and safe ends.
ASTM A178 ERW steel tube
ASTM A178 / ASME SA178 tubing is Electric Resistance Welded (ERW) carbon steel and carbon manganese tubing designed for high-temperature applications like boilers and superheaters.
ASTM A178 tubing is manufactured using Electric Resistance Welding (ERW), making it suitable for boilers, boiler flues, and superheaters. It is available in three grades: A178 Grade A (low carbon steel), A178 Grade C (medium carbon steel), and A178 Grade D (carbon manganese steel), each tailored to specific performance requirements in high-temperature environments.
The tubing meets ASTM A178 / ASME SA178 specifications, ensuring consistent quality through rigorous testing for weld integrity and mechanical properties. Used in power generation and industrial heating systems, these tubes offer durability and resistance to thermal stress. Chemical composition and mechanical properties vary by grade, with specific requirements for carbon, manganese, and tensile strength outlined in the ASTM A178 standard.
ASTM A178 tubing provides reliable, high-quality solutions for demanding boiler and superheater applications, ensuring performance and longevity.
ASTM A178 Tubes, identical to ASME SA178, are electric-resistance-welded (ERW) tubes made of carbon steel and carbon-manganese steel, designed for high-temperature applications such as boiler tubes, superheater flues, heat exchanger tubes, and safe ends. Available in Grades A (low-carbon steel), C (medium-carbon steel), and D (carbon-manganese steel), these tubes meet ASTM A178/A178M standards for reliable performance in demanding environments.
Manufactured using ERW processes, ASTM A178 Tubes range from 1/2 to 5 inches [12.7–127 mm] in outside diameter and 0.035 to 0.360 inches [0.9–9.1 mm] in minimum wall thickness. Post-weld heat treatment at 1650°F [900°C] or higher ensures weld integrity and stress relief, while coatings like varnish or 3LPE enhance corrosion-resistant ERW boiler tubes for extended durability.
These tubes undergo rigorous testing, including flattening, flaring, tension, reverse flattening, and hydrostatic or nondestructive electric tests, to ensure compliance with ASTM A178 standards. Their cost-effective design compared to seamless tubes makes them ideal for boilers, superheaters, and heat exchangers in power plants, chemical industries, and manufacturing facilities.
Compared to seamless ASTM A179 or A192 tubes, ASTM A178 Tubes offer a balance of cost and performance for low to medium-pressure applications (up to 350 psi [2.4 MPa]). Their versatility supports applications like boiler flues, air preheaters, and safe ends, addressing challenges like corrosion and thermal stress.
ASTM A178 Tubes provide engineers with reliable, high-quality solutions for steam generation and heat transfer systems, ensuring safety, efficiency, and longevity in critical infrastructure projects.
ERW process ensures strong, defect-free welds.
Available from 1/2 to 5 inches for diverse applications.
Coatings like 3LPE enhance durability in harsh conditions.
Handles low to medium-pressure boiler applications.
Lower cost compared to seamless boiler tubes.
Meets ASTM A178 and ASME SA178 standards.
Explore ASTM A178 Tubes with targeted long-tail keywords for specifications, applications, and materials.
Note: ASTM A178 Tubes meet international standards, ensuring high performance and reliability. Contact suppliers for detailed specifications.
| Grade | C (% max) | Mn (% max) | P (% max) | S (% max) | Si (% min) |
|---|---|---|---|---|---|
| Grade A | 0.06–0.18 | 0.27–0.63 | 0.035 | 0.035 | - |
| Grade C | 0.35 | 0.80 | 0.035 | 0.035 | - |
| Grade D | 0.27 | 1.00–1.50 | 0.030 | 0.015 | 0.10 |
The chemical composition ensures weldability and corrosion resistance for ASTM A178 Tubes in high-temperature applications.
| Grade | Tensile Strength (MPa min) | Yield Strength (MPa min) | Elongation (% min) | Hardness (HRB max) |
|---|---|---|---|---|
| Grade A | 325 | 180 | 35 | 77 |
| Grade C | 415 | 255 | 30 | 79 |
| Grade D | 485 | 275 | 30 | 77 |
These properties ensure ASTM A178 Tubes deliver reliable performance in boiler and superheater applications.
| Feature | ASTM A178 | ASTM A179 | ASTM A192 |
|---|---|---|---|
| Manufacturing Process | ERW | Seamless | Seamless |
| Diameter Range | 1/2–5 inches | 1/8–3 inches | 1/2–7 inches |
| Wall Thickness | 0.035–0.360 inches | 0.035–0.360 inches | 0.085–1.000 inches |
| Applications | Boilers, superheaters, heat exchangers | Heat exchangers, condensers | High-pressure boilers |
| Pressure Rating | Up to 350 psi | Low to medium pressure | High pressure |
| Cost | Low to Moderate | Moderate to High | High |
Why Choose ASTM A178 Tubes? Their cost-effective ERW construction and reliable performance make them ideal for boiler, superheater, and heat exchanger applications compared to seamless tubes.
| ASTM STANDARD | UNS NO. | KOREA/JAPANESE | GERMAN | BRITISH | BELGIAN | FRENCH | ITALIAN | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KS/JIS Symbol | KS/JIS Number | Remarks | DIN Type | DIN Number | Material Number | Remarks | B.S Number | B.S Grade | NBN Type | NBN Grade | Remarks | AFNOR Type | NF Number | Remarks | UNI Type | UNI Number | Remarks | |||
| ASTM A178C-Steel Electric-Resistance-Welded Boiler Tubes | ||||||||||||||||||||
| Grade A | K01200 | STBH 340 / STB 35 | D3563 / G3461 | St 37.8 | 17177 | 1.0315 | (7) | 3059 | ERW 320 | (3) | (3) | |||||||||
| Grade C | K03503 | SHBH 410 / STB 42 | D3563 / G3461 | St 42.8 | 17177 | 1.0498 | (7) | (3) | (3) | |||||||||||
| ASME | EN | DIN | JIS |
|---|---|---|---|
| ASME SA178 | EN 10217-2 | DIN 17177 | JIS G 3461 |
ASTM A178 tubes are available in various sizes, with the following common dimensions:
The permissible variations in dimensions are as follows:
Several tests are performed to ensure the quality and integrity of ASTM A178 ERW steel pipes:
ASTM A178 Tubes are engineered for high-temperature performance and corrosion resistance, making them ideal for boiler tubes, superheater flues, heat exchangers, boiler flues, safe ends, and air preheaters in critical infrastructure projects.
Used in water walls and economizers for steam generation in industrial boilers.
Increases steam temperature in superheater sections for enhanced efficiency.
Facilitates heat transfer in industrial heat exchanger systems.
Conveys combustion gases in boiler systems with high durability.
Joins tubes of different materials or thicknesses in boiler systems.
Preheats combustion air using flue gases for improved efficiency.
Why Choose ASTM A178 Tubes? Their high-temperature performance and cost-effective ERW design make ASTM A178 Tubes ideal for boiler, superheater, and heat exchanger applications, ensuring reliable operation.
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