ASTM A335 P5, P9, P11 P22, P91 Alloy Steel HFW Type Finned Tubes for Heat Exchanger applications. HFW (High Frequency Welded) Solid Fin Tubes provide high thermal efficiency and compact design solutions for heat exchangers using clean flue gases.

Helical Solid Finned Tubes are manufactured by:

• Helically wrapping continuous fin strip on tube using 400 kHz high frequency resistance welding
• Continuous welding along the spiral root with gas metal arc welding process
• Fin strip held under tension for forceful contact with base tube surface

• Diameter: 20 mm OD Min to 219 mm OD Max
• Thickness: 2 mm Min to 16 mm Max
• Materials: Carbon Steel, Stainless Steel, Alloy Steel, Corten steel, Duplex Steel, Super Duplex Steel, Inconel, High Chrome High Nickel & Incolloy, CK 20

• Thickness: 0.8 mm Min to 4 mm Max
• Height: 0.25" (6.35 mm) Min to 1.5" (38 mm) Max
• Density: 43 Fins Per Meter Min to 287 Fins Per Meter Max
• Materials: Carbon Steel, Stainless Steel, Alloy Steel, Corten steel, Duplex Steel, Incolloy

Available Helical Fin Height on Tube:

• 5/8" (15.875mm): 3/8", 1/2", 7/16"
• 1" (25.4mm): 3/8", 1/2", 7/16", 5/8"
• 1 1/4" (31.75mm): 3/8", 1/2", 7/16", 5/8"

"L" Footed, Embedded and other helical fin attachment options available.

• Selling Units: Metric Ton
• Package Type: Steel Frame Plywood Case Packing
• Transportation: Ocean, Land, Air
• Place of Origin: China

ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008