YUHONG HOLDING GROUP CO., LTD
| Delivery Time | 50-120 days |
| Packaging Details | Iron frame wooden case |
| Payment Terms | T/T,L/C |
| Material | ASTM A179 |
| Application | HRSG |
| Supply Ability | 5000 meters/day |
| Product | Solid Fin Tube |
| Package | Iron frame wooden case |
| Model Number | N/A |
| Brand Name | YUHONG |
| Certification | ISO9001:2015; ISO14001:2015; ISO45001:2018; PED 2014/68/EU; WPS/PQR/WPQ; ISO 3834 |
| Place of Origin | China |
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Product Specification
| Delivery Time | 50-120 days | Packaging Details | Iron frame wooden case |
| Payment Terms | T/T,L/C | Material | ASTM A179 |
| Application | HRSG | Supply Ability | 5000 meters/day |
| Product | Solid Fin Tube | Package | Iron frame wooden case |
| Model Number | N/A | Brand Name | YUHONG |
| Certification | ISO9001:2015; ISO14001:2015; ISO45001:2018; PED 2014/68/EU; WPS/PQR/WPQ; ISO 3834 | Place of Origin | China |
| High Light | ASTM A179 finned tubes for HRSG ，high-frequency welded finned tubes ，solid fin tube with warranty | ||
ASTM A179 High-Frequency Welded Finned Tubes are low-carbon steel finned tubes designed for efficient heat recovery in Heat Recovery Steam Generator (HRSG) systems. The base tubes are manufactured from ASTM A179 seamless cold-drawn low-carbon steel, while the fins are continuously welded to the tube surface using a high-frequency electrical resistance welding process.
The high-frequency welding process creates a strong and continuous metallurgical bond between the fin and tube, providing reliable heat transfer performance and good mechanical stability during long-term operation. Compared with bare tubes, the increased external surface area of the fins allows more heat to be transferred within a compact heat exchanger arrangement.
ASTM A179 is specified for seamless cold-drawn low-carbon steel heat-exchanger and condenser tubes and is particularly suited to heat-transfer applications where good thermal conductivity, formability, and economical material selection are important.
For HRSG applications, ASTM A179 high-frequency welded finned tubes are primarily considered for suitable lower- or moderate-temperature heat recovery sections rather than the highest-temperature superheater or reheater sections. The actual material selection should be determined according to the HRSG design temperature, pressure, corrosion environment, applicable code, and project specifications.
ASTM A179 high-frequency welded finned tubes can be considered for suitable heat recovery sections where the operating conditions are compatible with low-carbon steel.
Typical applications include:
For high-temperature HRSG components such as superheaters and reheaters, alloy steel grades such as P11, P22, P91, or other project-specified materials may be required instead of ASTM A179.
ASTM A179 is a low-carbon steel grade. Its chemical composition is controlled primarily through carbon, manganese, phosphorus, and sulfur. The ASTM A179 specification requires carbon of 0.06–0.18%, manganese of 0.27–0.63%, phosphorus and sulfur each at a maximum of 0.035%.
| Element | Chemical Composition |
|---|---|
| Carbon (C) | 0.06–0.18% |
| Manganese (Mn) | 0.27–0.63% |
| Phosphorus (P) | ≤ 0.035% |
| Sulfur (S) | ≤ 0.035% |
ASTM A179 requires the material to meet specified mechanical properties appropriate for its intended heat-exchanger and condenser tube applications. Typical minimum requirements include a tensile strength of 47 ksi (approximately 325 MPa), yield strength of 26 ksi (approximately 180 MPa), and minimum elongation of 35%. The maximum hardness requirement is 72 HRB.
| Property | ASTM A179 Requirement |
|---|---|
| Tensile Strength | ≥ 325 MPa |
| Yield Strength | ≥ 180 MPa |
| Elongation | ≥ 35% |
Company Details
Business Type:
Manufacturer,Importer,Exporter,Trading Company,Seller,Other
Year Established:
1990
Total Annual:
50M-70M
Employee Number:
50~800
Ecer Certification：
Verified Supplier
Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n... Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n...
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