YUHONG HOLDING GROUP CO., LTD
| Material | ASTM A335 P5 |
| Application | Waste Heat Boilers (WHB), Sulfur Recovery Units (SRU), Petroleum Refineries, Petrochemical Plants, Heat Recovery Steam Generators (HRSG) |
| Product | Studded Tube |
| Packaging Details | Iron frame wooden case |
| Payment Terms | T/T,L/C |
| Supply Ability | 5000 meters/day |
| Delivery Time | 50-120 days |
| Package | Iron frame wooden case |
| Model Number | N/A |
| Certification | ISO9001:2015 |
| Brand Name | YUHONG |
| Place of Origin | China |
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Product Specification
| Material | ASTM A335 P5 | Application | Waste Heat Boilers (WHB), Sulfur Recovery Units (SRU), Petroleum Refineries, Petrochemical Plants, Heat Recovery Steam Generators (HRSG) |
| Product | Studded Tube | Packaging Details | Iron frame wooden case |
| Payment Terms | T/T,L/C | Supply Ability | 5000 meters/day |
| Delivery Time | 50-120 days | Package | Iron frame wooden case |
| Model Number | N/A | Certification | ISO9001:2015 |
| Brand Name | YUHONG | Place of Origin | China |
| High Light | ASTM A335 P5 studded tubes ，Studded finned tubes for boilers ，High-performance P5 finned tubes | ||
ASTM A335 P5 Studded Finned Tubes are high-temperature alloy steel heat transfer tubes manufactured by resistance welding or automatic stud welding steel pins onto the outer surface of ASTM A335 P5 seamless tubes. The welded studs significantly increase the external heat transfer area while maintaining excellent mechanical strength under elevated temperature conditions.
The P5 alloy steel grade contains approximately 5% chromium and 0.5% molybdenum, providing superior oxidation resistance, creep strength, and high-temperature corrosion resistance compared with conventional carbon steel tubes. These characteristics make ASTM A335 P5 Studded Finned Tubes particularly suitable for severe operating environments found in refineries, petrochemical plants, waste heat recovery units, sulfur recovery systems, and power generation facilities.
Studded finned tubes are widely utilized where dirty gas streams, abrasive particles, or high-temperature flue gases are present. Unlike conventional spiral finned tubes, studded tubes offer excellent resistance to fouling and thermal stress while maintaining stable heat transfer performance over long operating periods.
The chromium-molybdenum alloy composition enables reliable operation at temperatures up to approximately 650°C, making P5 studded tubes suitable for demanding thermal applications.
The chromium content forms a protective oxide layer that improves resistance to oxidation and scaling in hot gas environments.
Welded studs increase the external heat transfer surface area and improve turbulence around the tube surface, resulting in higher thermal efficiency.
The studded design minimizes ash deposition and allows easier cleaning compared with closely spaced spiral fin configurations.
Suitable for applications involving frequent temperature fluctuations and cyclic operating conditions.
Designed to withstand harsh refinery and petrochemical environments, reducing maintenance frequency and replacement costs.
Used in high-temperature gas cooling systems to recover thermal energy and generate steam.
Widely applied in Claus process waste heat boilers where elevated temperatures and sulfur-bearing gases are present.
Installed in process heaters, fired heaters, and flue gas heat recovery systems.
Suitable for process gas coolers and heat recovery equipment handling high-temperature gases.
Applied in selected high-temperature sections requiring enhanced durability and heat transfer performance.
Used in coke oven, sintering plant, and furnace waste heat recovery systems.
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.15 |
| Manganese (Mn) | 0.30 – 0.60 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.025 |
| Silicon (Si) | ≤ 0.50 |
| Chromium (Cr) | 4.00 – 6.00 |
| Molybdenum (Mo) | 0.45 – 0.65 |
| Property | Value |
| Tensile Strength | ≥ 415 MPa |
| Yield Strength | ≥ 205 MPa |
| Elongation | ≥ 30% |
| Hardness | According to ASTM A335 requirements |
The alloy composition provides an excellent balance of strength, ductility, and long-term creep resistance under elevated operating temperatures.
| Parameter | Range |
| Outside Diameter | 100mm-219mm |
| Wall Thickness | 2.77 mm – 12.70 mm |
| Tube Length | Up to 18,000 mm |
| Parameter | Range |
| Stud Diameter | 6 mm – 16 mm |
| Stud Height | 10 mm – 30 mm |
| Stud Pitch | 10 mm – 40 mm |
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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