• Overview
  • Salient Features
  • Applications
  • Types of Material
  • Product Range
  • Testing & Inspection
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Stainless Steel Division

Ratnamani’s Stainless Steel Division provides total piping & tubing solutions by manufacturing of Nickel Alloy / Stainless Steel Seamless Tubes & Pipes, Stainless Steel Welded Tubes & Pipes, Titanium Welded Tubes and Stainless Steel Pipes along with Coating at its state of the art manufacturing facilities located at Indrad (near Ahmedabad) and Bhimasar (near Gandhidham, Kutch). These facilities are operated through Green Power and they discharge Zero Waste.

The strength of the Stainless Steel Division is in manufacturing products for critical applications by meeting the stringent requirements which are then tested in the in-house Laboratory accredited to ISO 17025. The products are supplied in niche market such as Oil & Gas, Refinery & Petrochemical, Dairy, Chemical & Fertilizer, Thermal, Solar & Nuclear Power, LNG, Desalination, Defence, Aerospace, Chillers & Cooling system, Pulp & Paper Industry, Automobile etc. This makes the company an ideal choice for major EPC Contractors, project owners & process licensors across the globe.

Ratnamani’s skilled manpower stands by its commitment of delivering nothing but the best by bringing their technical expertise at work.

Salient Features


State-Of-Art Manufacturing Facility

Wide Product Range

In House Inspection And Testing Facilities

Proven Track Records

Good Technical Expertise

Having Rich Experience Of Serving Various Sectors

Vendor Approval with Various EPC Contractors, End Clients And Consultants Worldwide

NABL Accredited Laboratory

Applications of Stainless Steel

  • Oil & Gas Exploration
  • Petrochemicals and Refineries
  • Fertilizer Plants
  • Chemical Industries
  • Thermal, Nuclear and Solar Power Plants
  • Atomic Energy
  • Desalination Plants
  • Aerospace
  • Defence
  • Pharmaceutical
  • Food and Dairy
  • Automobile
  • Sugar
  • Paper Industries
  • Marine
  • Cross Country Pipe Line for Gas & Water
  • Pipes for Engineering purpose

Types of Material

Types of Material used in Manufacturing Programme:

  • Austenitic Stainless Steel (Welded and Seamless Tubes and Pipes)
  • Super Austenitic Stainless Steel (Welded and Seamless Tubes and Pipes)
  • Ferritic Stainless Steel (Welded and Seamless Tubes)
  • Super Ferritic Stainless Steel (Welded Tubes)
  • Martensitic Stainless Steel (Seamless Tubes)
  • Duplex Stainless Steel (Seamless and Welded Tubes and Pipes)
  • Super Duplex Stainless Steel (Seamless and Welded Tubes and Pipes)
  • Titanium (Welded Tubes)
  • Nickel Alloys (Seamless Tubes)
  • Stainless Steel Seamless/ Welded Pipes with external/ internal coating
  • Heat Exchanger Tubes
  • Major application for Ratnamani's Stainless Steel/ Titanium/ Nickel Alloy Tubes is in manufacture of Shell and Tube type Heat Exchangers
  • Shell and Tube Heat Exchangers
  • Shell and Tube Heat Exchangers are defined as heat exchangers that can transfer heat from one to another fluid, one medium to another medium. Fluid passes through a set of tubes while another fluid passes through the shell that encloses tubes. Shell and Tube Heat Exchangers are used in applications in processes involving high temperature and pressure and , in cases where the fluid contains particles
  • There are two types of Shell and Tube Heat Exchangers used in industrial applications : U- Tube Heat exchangers Straight Tube Heat exchangers
  • U-Tube Heat Exchangers : U- Tube heat exchanger comprises a set of U-shaped tubes fixed to a Tube Sheet and get supported by flow baffles or tube support and placed in a shell welded or bolted to the Tube Sheet. While one fluid is passed through the Shell on the exterior surfaces of the Tubes, the other fluid is guided into the tubes through Header assembly, which is fixed to the Tube Sheet either by welding or by bolting
  • Straight Tube Heat Exchangers : The two ends of a set of straight tubes are fixed to two Tube Sheets, welded or bolted to the Shell. One fluid passes through the Tubes and the other through the Shell. Such Heat Exchangers are used in applications where the fluid have high fouling properties. They are also used in applications with high occurrence of temperature cross. The straight tube structure facilitates easy cleaning of the tubes
  • There are several factors, which are to be taken into account while manufacturing Heat Exchanger Tubes i.e. dimensional tolerances for diameter, wall thickness, length, eccentricity etc., requisite Mechanical properties, Corrosion resistance and surface finish etc.
  • Ratnamani is one of the major manufacturers of Stainless Steel Heat Exchanger Tubes in welded and seamless construction, Nickel Alloy Seamless Tubes, Titanium Welded Tubes for applications in Power generation i.e. Nuclear, Thermal and Solar Power Plants, Refinery and Petrochemical, Oil and Gas, Chemical and Fertilizer, Process Industries, Defence, Atomic energy and Aerospace, Pulp and Paper Industries etc.

Testing & Inspection

  • Mechanical Testing & Chemical Analysis
  • Fully equipped laboratory for Corrosion Testing, Chloride Contamination Testing, Bath Analysis Testing, Die Penetrant Test & Residual Stress Measurement
  • Micro Structure Examination / Analysis
  • Laboratory Spectrometer & Portable Spectrometer
  • Positive Material Identification [PMI] Tester
  • Hydro Testing –SS Straight & U-Tubes and CS Pipes
  • Air Under Water Testing – Straight Length upto 30 Meters
  • Ferrite Content & Surface Finish
  • Fibroscope – Inside surface checking of Tubes having outside diameter 4.7 MM and above
  • Surface Roughness Testing
  • Non Destructive Testing offered
    • - Eddy Current Testing
    • - Ultrasonic Testing with full body thickness measurement
    • - Real Time Digital Radiography Testing
    • - Conventional Film Radiography

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