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DIPTI METAL INDUSTRIES

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UNS S30900 (AISI 309) Stainless Steel Manufacturer India

UNS S30900 (AISI 309) Stainless Steel Products

UNS S30900 Manufacturer • UNS S30900 Exporter • UNS S30900 Supplier • UNS S30900 Dealer • UNS S30900 Distributor • UNS S30900 Stockist • UNS S30900 Wholesaler

Company Overview – Dipti Metal Industries

Established in 2009, Dipti Metal Industries is a globally trusted UNS S30900 manufacturer and UNS S30900 exporter of UNS S30900 (AISI 309) stainless steel fittings, flanges, and fasteners. Based in Mumbai, India, we supply premium quality products to over 65 countries worldwide, backed by ISO-certified production, advanced machining, AI-enhanced logistics, and complete EN 10204 3.1/3.2 material traceability.

About UNS S30900 (AISI 309)

UNS S30900 corresponds to AISI 309 stainless steel, known for its high chromium (22–24%) and nickel (12–15%) content. It offers excellent resistance to high-temperature oxidation up to around 1038 °C (1900 °F) and retains strength at elevated temperatures. This makes it ideal for demanding applications where both heat resistance and durability are essential.

International Equivalents of UNS S30900

Standard / Region Equivalent Grade
UNS (USA)S30900 (AISI 309)
ASTM / ASME (USA)A240 309, A312 309, A479 309
EN / DIN (Germany)X15CrNiSi20-12 (1.4828)
JIS (Japan)SUS309S
BS (UK)309S
ISO (International)X15CrNiSi20-12
GOST (Russia)Equivalent grade in Russian standards

UNS S30900 (AISI 309) Product Range

Steel Butt Weld Pipe Fittings

  • UNS S30900 Elbows (45°, 90°, 180° – Long Radius & Short Radius)

  • UNS S30900 Tees (Equal & Reducing)

  • UNS S30900 Reducers (Concentric & Eccentric)

  • UNS S30900 End Caps, Stub Ends, Crosses

Steel Socket Weld & Threaded Fittings

  • UNS S30900 Couplings (Full & Half)

  • UNS S30900 Plugs, Unions, Olets, Swage Nipples, Hex Nipples, Hex Bushings

Steel Flanges

  • UNS S30900 Weld Neck Flanges

  • UNS S30900 Slip On Flanges

  • UNS S30900 Blind Flanges

  • UNS S30900 Threaded Flanges

  • UNS S30900 Socket Weld Flanges

  • UNS S30900 Long Weld Neck Flanges

  • UNS S30900 Spectacle Blind, Spade, Spacer Flanges

Steel Fasteners

  • UNS S30900 Stud Bolts

  • UNS S30900 Hex Bolts

  • UNS S30900 Nuts (including Heavy Hex Nuts)

  • UNS S30900 Flat Washers

Advantages of UNS S30900 (AISI 309)

  • Excellent high-temperature oxidation resistance

  • Retains mechanical strength at elevated temperatures

  • Superior corrosion resistance in various environments

  • Good weldability and fabrication properties

Typical Chemical & Mechanical Properties

  • Chromium (Cr): 22–24%

  • Nickel (Ni): 12–15%

  • Carbon (C): ≤0.20%

  • Continuous service temperature up to 1038 °C

  • Good tensile and yield strength at high temperatures

Applications

  • Furnace components and heat treatment equipment

  • Petrochemical processing units

  • Power generation boilers and heat exchangers

  • High-temperature exhaust and flue systems

  • Kiln and incinerator parts

Global Export Reach

  • North America: USA, Canada, Mexico

  • Europe: Germany, UK, France, Italy, Spain, Netherlands

  • Middle East: UAE, Saudi Arabia, Qatar, Oman, Kuwait

  • Asia-Pacific: Japan, Singapore, South Korea, Australia, New Zealand

  • Africa: South Africa, Egypt, Nigeria, Kenya

  • South America: Brazil, Argentina, Chile

Quality & Packaging

  • Supplied with EN 10204 3.1 / 3.2 Test Certificates

  • Optional third-party inspection by TUV, SGS, DNV

  • Seaworthy wooden crate packing with protective thread caps

  • Custom marking, barcoding, and export documentation provided

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