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Stainless Steel Welded Heat Exchanger Tubes

Ratnamani is having dedicated facility for manufacturing Stainless Steel Welded Tubes using TIG and LASER Welding.

The manufacturing facility is equipped with the state of art Coil Slitting Line, which plays an important role for manufacturing welded tubes. Ratnamani is having the latest generation Tube Mills using On-Line Bright Annealing, On-Line Eddy Current Testing, Two Axis Dimension check including ovality resulting into closer dimensional control.

Ratnamani is also having facility of High Speed Draw Benches for manufacturing Welded and Cold Drawn Tubes in Austenitic and Duplex Stainless Steels in longer length, Off-Line Bright Annealing , Off-Line Eddy Current Testing,Off-Line Ultrasonic Testing etc.

Ratnamani is also having the facility to supply tubes with lower residual stress values, which plays an important role in service life of Heat Exchanger Tubes.

Ratnamani manufactures Austenitic, Super Austenitic , Ferritic , Super Ferritic, Lean Duplex, Duplex and Super Duplex Stainless Steel Welded Tubes.

Common Features :

  1. Good Surface Finish
  2. Good Corrosion Resistance
  3. In-house "U" bending facility and "U" bend stress relieving
  4. Ability to produce tubes with stringent NDT requirements of the Client
  5. Ability to handle various Grades of Stainless Steel
  6. Stabilization Heat Treatment facility for Stabilized Stainless Steel Grades

Salient Features :

Power Plants
  • Stainless Steel Welded Condenser Tubes
    1. Capabilities to manufacture tubes having wall thickness from 0.40 mm to 2.00 mm.
    2. Straight Length upto 25 meters

  • Stainless Steel Seamless LP and HP Heater Tubes
    1. Capabilities to supply tubes with Very Low Residual Stress Values leading to longer service life
    2. Capabilities to manufacture tubes having wall thickness from 0.40 mm to 2.00 mm
    3. Closer dimensional tolerances
    4. Dedicated facility for manufacturing Tubes in U bend Solution Annealed condition upto developed length of 36 meters
    5. Capabilities to supply Ferritic Stainless Steel tubes for Nuclear Power Plant

  • Stainless Steel Welded HP Heater Tubes
    1. Capabilities to supply tubes with Very Low Residual Stress Values leading to longer service life
    2. Fully recrystallized microstructure in weld, improving corrosion resistance of Heater Tubes
    3. Closer dimensional tolerances due to Cold drawn tube
    4. Dedicated facility for manufacturing Tubes in U bend Solution Annealed condition upto developed length of 36 meters
    5. Capabilities to supply Ferritic Stainless Steel tubes for Nuclear Power Plant
    6. Capability to supply tubes with Special Chemistry
General Industries
  • Manufacturing capabilities to supply Ferritic Stainless Steel tubes for Desalination Plant
  • Manufacturing capabilities to supply Duplex Welded and Cold Drawn Tubes for Oil and Gas Sector
  • Manufacturing capabilities to supply Lean Duplex tubes for Process Industries

MANUFACTURING RANGE:

SIZE / RANGE THICKNESS SPECIFICATION
10.00 MM to 76.00 MM OD 0.50 MM to 4.00 MM ASTM A-249, A-268, A-269, A-270, A-554, A-688, A-789, A-803
EN-10217-7
U-Tubes as per Customer's Drawing.
Grades : TP-304/L/LN/H/N,TP-316/L/LN/H/N/Ti,TP-317L,TP-321/H,TP-347/H, UNS S31254
& Various grades as per European Norms
TP-409, TP-410, TP-430Ti, TP-439, UNS S44735
UNS S31803, S32205, S32750, S32760
* Sizes and Specifications other than above can be manufactured on request
SS Product Range
 Heat exchanger Tubes
 Stainless Steel Seamless Tubes
 Stainless Steel Welded Tubes
 Titanium Welded Tubes
 Seamless Instrumentation Tubes
 Stainless Steel Pipes
 Stainless Steel Seamless Pipes
 Stainless Steel Welded Pipes
 Stainless Steel 3 Layer PE Coated  Pipes
APPROVALS

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