Large Diameter Finned Tube
Large-diameter finned pipes are made of large-diameter steel pipes. They consist of a base tube and fins wound or welded onto the surface of the base tube, significantly increasing heat exchange efficiency by increasing the surface area.
- Base tube materials for large-diameter finned tubes:Large-diameter carbon steel pipes: ASTM A179, A106 Gr.B;
Large-diameter alloy steel pipes: ASTM A335 P22;
Large-diameter stainless steel pipes: ASTM A312 TP304/316;
Large-diameter nickel-based alloy pipes: ASTM B163/ ASTM B705 - Dimensions of large-diameter finned tubes:The diameter of large-diameter finned tubes is typically 2 inches, 2.5 inches, 3 inches, with some larger sizes being 5 inches, 6 inches, and 10 inches.
Product Details
What are Large Diameter Finned Tubes?
Large-diameter finned pipes are made of large-diameter steel pipes. They consist of a base tube and fins wound or welded onto the surface of the base tube, significantly increasing heat exchange efficiency by increasing the surface area.
Large-diameter finned tubes are industrial equipment specifically designed for high-flow, high-efficiency heat exchange applications. They significantly increase the heat dissipation area and efficiency by welding spiral fins to the outer wall of large-diameter steel pipes.
Their core advantages lie in the large-diameter base tube (usually ≥DN50), which significantly reduces flow resistance and is suitable for high-flow steam, hot water, or heat transfer oil. At the same time, the spiral fin structure greatly increases the heat dissipation area and improves heat exchange efficiency.
Base tube materials for large-diameter finned tubes:
Large-diameter carbon steel pipes: ASTM A179, A106 Gr.B;
Large-diameter alloy steel pipes: ASTM A335 P22;
Large-diameter stainless steel pipes: ASTM A312 TP304/316;
Large-diameter nickel-based alloy pipes: ASTM B163/ ASTM B705
Fin materials for large-diameter finned tubes:
Carbon steel fins, such as A1008,
Alloy steel fins, such as SS409,
Stainless steel fins, such as SS304, SS316
Dimensions of large-diameter finned tubes:
The diameter of large-diameter finned tubes is typically 2 inches, 2.5 inches, 3 inches, with some larger sizes being 5 inches, 6 inches, and 10 inches.
Fin types:
Solid/Serrated: Using high-frequency welding (HFW) or laser welding processes, the fins are spirally wound, durable, and suitable for harsh working conditions.
Longitudinal: The fins are parallel to the pipe axis, commonly used in oil and gas heat recovery applications.
Applications of large-diameter finned tubes:
Large-diameter finned tubes have a wide range of applications. They are widely used in industrial workshops, agricultural greenhouses, food drying plants, and other places. In heating and drying systems, they provide excellent heat dissipation, meeting the needs of different places and users for different temperatures.
TUBE,MTLC,FIN,4″40,3650MM,106B,11CR
TYPE : FINNED
OUTSIDE DIAMETER : 114.3 MM
WALL THICKNESS : 6.02 MM
WALL THICKNESS : SCH.40
LENGTH : 3650 MM
CONNECTION TYPE : BUTT WELD
MANUFACTURING PROCESS : SEAMLESS
MATERIAL : CARBON STEEL
APPLICATION : –
MATERIAL STANDARD : ASTM A106 GR.B
FINISH : WITH 11 CR
SPECIAL FEATURES : 250 MM PLAIN ENDS
SPECIAL FEATURES : 3150 MM FINNED LENGTH
ADDITIONAL SPECN : FIN:12.7HX1.24WTX118FINS PER M
- Datasheet
- Drawing
- Certificates
| Parameter | Specification |
|---|---|
| Base Tube Material | CS (A106, A333, A179, A210, P5, P11, P22), SS (SS304, SS316, Duplex SS2205, Super Duplex SS32750), Nickel Alloys (825, Inconel Alloy 625, High chrome high nickel incoloy alloy Monel 400) |
| Tube OD | 15.88 mm ~ 273 mm or customized |
| Tube Wall Thick | 2 mm ~ 28.6 mm |
| Length | 1 Meters to 28 Meters (92 feet) |
| Fin Material | CS (08F, SPCC), SS (SS304, SS316, 409, 410, 321, 347) |
| Fin Height | 8 mm ~ 35 mm |
| Fin Thick | 1 mm ~ 1.5 mm |
| Fin Pitch | 3 ~ 333 FPM (1 FPI ~ 7 FPI) |
| Fin Type | Solid, U Type, S Type, Serrated |
| Finned tube welding rate | more than 98% |
| Tube Ends | Plain cut or beveled at any degree |
Large Diameter Finned Tube Appearance Dimension Inspection
Large diameter finned tube appearance dimension inspection is one of the important links to ensure the quality and performance of fin tubes.
The inspection items mainly include fin height, fin spacing, fin thickness, base tube wall thickness and outer diameter, etc.
Production of Large Diameter Finned Tubes
Production of large diameter finned tubes can utilize high-frequency finned tube welded machine, where high-frequency current welds the steel pipe and fins, or laser finned tube welded machines, where a laser beam performs the welding. Both processes can achieve a maximum diameter of 273mm and a length of 30m.
Large Diameter Finned Tubes Package
Payment Terms:T/T, LC
Delivery: 15-30 days after payment
Marking: Standard + Steel Grade + Size + Heat No + Lot No
Package: Iron frame packing boxes and the desiccants are put into each package for continental transportation as well. or as required
