Welded Square Fin Tubes

  • Plate Fin Tubes
  • H Fin Tubes
  • Boiler Tubes For Steel Plants
Production Capacity
  • 3 No Of Machines (lines ) With A Capacity To Manufacture 30,00,000 Square Fins Per Annum.
  • This Is The Highest Capacity In India (can Be Increased).

Technical Details

Pipe Details
Pipe Diameter : Min 1” Od To Max 4” Nb Pipe
Materials : Carbon Carbon Steel, Stainless Steel, Alloy Steels (P5,P9,P11, P22), Inconel, High Chrome High Nickle & Incolloy  Etc. (any Ferrous Material)
Fin Details
Fin Size : Min 1” (25.4 Mm Bigger Than Tube On Both Sided) Min Thickness 2mm To Max 4 Mm
Fin Spacing : Min 12.7 Mm
Fin Materials : Carbon Steel, Stainless Steel, Alloy Steels (P5,P9,P11, P22), Inconel, High Chrome High Nickle & Incolloy  Etc. (any Ferrous Material)

Production Technique & Applications

An Electric Current Is Applied By Contacts On The Square Fins (by Using Special Contours) And Tube And The Resistance In This Circuit Produces The Heat Necessary For Welding. Maximum Resistance And Therefore Maximum Heating Occur At The Interface Between The Fin And The Tube. Pressure To Forge The Square Fins And The Tube Together At The Point Of Maximum Heating Is Applied By Various Forms Of Tooling. These Resistance Welding Processes Produce A Strong Metallurgical Bond Between The Fin And The Tube While Minimizing The Heat Affected Zone (HAZ) In The Tube. The Use Of Pressure To Forge The Square Fins And The Tube Together Helps To Minimize The Heat Input Necessary To Make The Weld. This Product Is Used In Boilers Under Very High Pressure & Temperature Mainly In Steel Plants In Dirty Environment. This Production Is Done On The Latest And Most Modern Machine Among Those Installed In India. It Has The State Of Art Technology, With The Japanese Welding Controller Giving The Precise Secondary Current And Cycle Time, At The Time Of Welding, Which Result In The Desired Welding Quality. All The Welding Parameters Are Plc Controlled

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