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Stainless Steel Seamless Instrumentation Tubes

Ratnamani has a dedicated facility for the manufacturing of Stainless Steel Seamless Instrumentation 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 to produce Mother Hollows with closer dimensional tolerances and good surface finish. Ratnamani is self-sufficient in manufacturing of Mother Pipes with special chemistry.

The Hot Extruded Mother Hollows are used for manufacturing Stainless Steel Seamless Instrumentation 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 manufactures Austenitic, Super Austenitic, Duplex and Super Duplex Seamless Tubes.

Salient Features


Hot Extruded Mother Hollows are used to manufacture tubes for producing finished tubes

Good surface finish

Ability to produce tubes with

  • Closer Dimensional Tolerances
  • Closer hardness values
  • Special chemistry as per customer requirements
  • Stringent NDT Testing including Ultrasonic Testing, Eddy Current Testing etc.

Good Corrosion resistance

Manufacturing of Instrumentation Seamless Tubes

Products Size/Range Thickness Specification
Instrumentation Tubes 3.00 MM to 25.40 MM OD 0.50 MM to 6.00 MM ASTM A 213, A 269,
A 789 EN 10216-5
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-317L/ LM,TP-321/H,TP-347/H, UNS S31254, UNS N08904/ Various grades as per European Norms UNS S31803, S32205, S32750, S32760
*Sizes and Specifications other than above can be manufactured on request

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