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Stainless Steel Seamless Heat Exchanger Tubes

Ratnamani has a dedicated facility for the manufacturing of Stainless Steel Seamless Tubes.

The facility is equipped with 1750 MT capacity of Water Hydraulic Hot Extrusion Press. The Hot Extrusion Press is the core strength of the Company enabling it to produce Mother Hollows with closer dimensional tolerances and good surface finish. Ratnamani is self-sufficient for manufacturing Mother Pipes with special chemistry.

The Hot Extruded Mother Hollows are used for the manufacturing of Stainless Steel Seamless Heat Exchanger Tubes. The tubes are manufactured using High Speed Cold Pilger Mills and modern Draw Benches. The tubes are heat treated in Off-Line Bright Annealing / Conventional Annealing furnaces .

Ratnamani has the capability to supply tubes with lower residual stress values, which plays an important role in service life of High Pressure Heat Exchanger Tubes.

Ratnamani has a dedicated facility to manufacture Tubes with developed lengths upto 40 meters in U bend Solution Annealed condition.

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

Salient Features

  • Hot Extruded Mother Pipes as a source of raw material
  • Ability to supply tubes with stringent NDT Testing, Special Chemistry, Lower Residual Stress values, OD Polishing, closer Dimensional Tolerance, higher Corrosion Resistance etc

Supply condition

  • Bright Annealed / Solution Annealed & Passivated
  • Stabilization Heat Treatment
  • Straight / U bend condition having developed length upto 40 meters

Manufacturing of Stainless Steel Seamless Heat Exchanger Tubes

Products Size/Range Thickness Specification
Heat Exchanger Tubes 10.00 MM to 76.00 MM OD 0.7 MM to 6.00 MM ASTM A 213, A 268, A269, A 270, A688,A 789,EN 10216-5 U-Tubes as per Customer's Drawing. Tubes can also be supplied as per AFNOR, GOST, JIS, EN specification.
Grades : TP-304/L/LN/H/N,TP-316/L/LN/H/N/Ti,TP-317/ L / LM,TP-321/H,TP-347/H, UNS S31050, UNS S31254, UNS N08904/ Various grades as per European Norms TP-405,TP-410,TP-430,TP-446 UNS S31260, S31500, S32304, S31803, S32205, S32750, S32760
*Sizes other than above can be manufactured as per requirement

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