Oval Stud / Welded Elliptical Stud Tubes

  • Studded Tubes (Oval)
  • Ship Boiler Tubes
  • Elliptical Stud Fin Tubes
Production Capacity
  • 3 No Of Machines (lines ) With A Capacity To Manufacture 16,00,000 Oval Studs 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 Steel, Stainless Steel, Alloy Steels (P5,P9,P11, P22), Inconel, High Chrome High Nickle & Incolloy  Etc. (any Ferrous Material)
Stud Details
Stud Height : Min 0.5” (12.7 Mm) To Max – 2.5” (63.5MM)
Stud Diameter : Elliptical / Oval Size Of Which Can Vary From Customer To Customer (12.7MM Is Common)
Stud Spacing : Min 12.7 Mm
Stud 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 Oval Studs 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 Stud And The Tube. Pressure To Forge The Oval Stud 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 Stud And The Tube While Minimizing The Heat Affected Zone (HAZ) In The Tube. The Use Of Pressure To Forge The Oval Stud 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 Sea Ships. 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.