ASTM A335 P5 Studded Finned Tubes Alloy Steel For Fired Heaters And Furnaces
ASTM A335 P5 Studded Finned Tubes Alloy Steel For Fired Heaters And Furnaces
Detailes of ASTM A335 Base Pipes
Chemical Composition (%)
| Grade | C | Mn | P | S | Si | Cr | Mo |
| P5 | 0.15max | 0.30-0.60 | 0.025 | 0.025 | 0.50max | 4.00-6.00 | 0.45-0.65 |
Mechanical Properties
| Grade | Tensile Strength,min | Yield Strength (0.2%Offset,min) |
| P5 | 60ksi (415 MPa) | 30ksi (205 MPa) |
In the industrial field, heating furnaces and furnaces are key equipment in processes such as petroleum refining, petrochemical production, and power generation that require high-temperature heating. The performance, efficiency, and durability of these systems largely depend on heat exchange components, among which heat exchange tubes play an irreplaceable role. ASTM A335 P5 alloy steel strip corrugated tube has become the preferred solution for heating furnaces and furnaces.The combustion heaters and furnaces operate under extreme conditions - high temperatures (usually above 500°C), high pressure (up to 20 MPa), and corrosive atmospheres containing sulfur, hydrocarbons and dust - and ASTM A335 P5 riveted finned tubes are highly suitable for meeting these requirements.
Application
Fired heaters & furnaces
Hydroprocessing units
Refinery waste heat recovery
Boiler convection sections
HRSG (Heat Recovery Steam Generators)
Air preheaters
Synthesis ammonia & urea plants
Furnace coils for specialty chemicals
The ASTM A335 P5 alloy steel finned tubes represent the optimal combination of material performance and design efficiency for combustion heaters and furnaces. The P5 alloy boasts excellent high-temperature strength, creep resistance, and corrosion resistance, addressing the harsh working conditions of these systems. The lug fin design enhances heat transfer efficiency and reduces fouling. These tubes are widely used in fields such as petrochemical refining, power generation, and specialty chemical production, offering reliable performance, energy savings, and improved product quality.
Specifications For Various Types Of Finned Tubes
| Type | Description | Base tube | Fin specification (mm) | ||
| O.D. (mm) | Fin pitch | Fin height | Fin thick | ||
| Embedded | G-type fin tube | 16-63 | 2.1~5 | <17 | ~0.4 |
| Extruded | Single metal / Combined metal | 8-51 | 1.6~10 | <17 | 0.2-0.4 |
| Low fin tube / T-type fin tube | 10-38 | 0.6~2 | <1.6 | ~0.3 | |
| Bamboo tube / corrugated tube | 16-51 | 8.0~30 | <2.5 | ~0.3 | |
| Wound | L / KL / LL type fin tube | 16-63 | 2.1~5 | <17 | ~0.4 |
| String | String fin tube | 25-38 | 2.1-3.5 | <20 | 0.2-0.5 |
| U-type | U-type fin tube | 16-38 | / | / | / |
| Welding | HF-welding fin tube | 16-219 | 3~25 | 5~30 | 0.8-3 |
| H/HH type fin tube | 25-63 | 8~30 | <200 | 1.5-3.5 | |
| Studed fin tube | 25-219 | 8~30 | 5~35 | φ5-20 | |
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