321/321H Stainless Steel Flanges

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321/321H Stainless Steel Flanges

Natural Steels is one of the most prominent Stainless Steel 321/321H Flanges Manufacturer, Suppliers & Exporter in India. We are supplying flanges in almost everywhere India and also exporting it to other global countries such as US, UK, Saudi Arabia, Dubai, Singapore, Thailand, etc. We use latest technology and well maintained machinery to produce stainless steel flanges.


The SS 321/321H Flanges are manufactured using optimum quality material and thereby ensure excellent durability and corrosion resistance. The 321/321H Stainless Steel Flanges are used in an assortment of industrial purposes and are mainly used to connect pipes.

Our offered range of Alloy 321/321H Flanges widely used in various application industry like power generation, oil and gas transportation, petrochemical plants, refineries, waste water treatment plants etc. We offer these steel flanges available in various shapes, sizes, dimensions and specification according to our client requirement. Contact us today to request a free estimate or send your complete requirement on naturalsteels@hotmail.com

321/321H Stainless Steel Flanges Specification

Specifications ASTM A182 / ASME SA182
Size 1/2″ (15 NB) to 48″ (1200NB)
ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Class / Pressure 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Standard ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.

Equivalent Grades of Stainless Steel 321/321H Flanges

SS 321 1.4541 S32100 SUS 321 X6CrNiTi18-10
SS 321H 1.4878 S32109 SUS 321H X12CrNiTi18-9

Chemical Composition of 321/321H Stainless Steel Flanges

Grade C Mn Si P S Cr N Ni Ti
SS 321 0.08 max 2.0 max 1.0 max 0.045 max 0.030 max 17.00 – 19.00 0.10 max 9.00 – 12.00 5(C+N) – 0.70 max
SS 321H 0.04 – 0.10 2.0 max 1.0 max 0.045 max 0.030 max 17.00 – 19.00 0.10 max 9.00 – 12.00 4(C+N) – 0.70 max

Mechanical Properties of Stainless Steel 321/321H Flanges

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
8.0 g/cm3 1457 °C (2650 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %

Types of 321/321H Stainless Steel Flanges

Stainless Steel 321 Slip on Flanges Stainless Steel 321H Weld Neck Flanges
Stainless Steel 321 Threaded Flanges Stainless Steel 321H Blind Flanges
Stainless Steel 321 Socket Weld Flanges Stainless Steel 321H Lap Joint Flanges
Stainless Steel 321 Orifice Flanges Stainless Steel 321H Spectacle Blind Flanges
Stainless Steel 321 Reducing Flanges Stainless Steel 321H Spacer Flanges
ASTM A182 Stainless Steel 321 Ring Flanges ASME SA182 Stainless Steel 321H Forged Flanges

Available Standards of 321/321H Stainless Steel Flanges

ASTM A182 Stainless Steel Flanges ASME SA182 Stainless Steel Flanges
Werkstoff Nr. 1.4541 Stainless Steel Blind Flanges UNS S32100 Stainless Steel Orifice Flanges
Werkstoff Nr. 1.4878 Stainless Steel Blind Flanges UNS S32109 Stainless Steel Orifice Flanges
ASTM A182 Stainless Steel Forged Flanges ASME SA182 Stainless Steel Reducing Flanges

Latest Price List of 321/321H SS Flanges

Natural Steels is one of the top manufacturers and suppliers of Stainless Steel Flanges from India. Our prices for 321/321H Stainless Steel Flanges are very reasonable. Please click on contact us now button or click here to send your requirement. Natural Steels maintains a high-inventory of Stainless Steel Flanges and can export them at the best price for 321/321H Stainless Steel Flanges.

321/321H Stainless Steel Flanges - Industries & Applications

  • Our 321/321H Stainless Steel Flanges is used in various applications and industries. Below are a few of them:
    • Sugar Industry
    • Oil & Gas Industries
    • Petrochemical Industries
    • Power Plants Industry
    • Fertilizers Industries
    • Chemical Industries
    • Pharmaceuticals, Dairy Foods & Breweries Industry

How to Buy 321/321H Stainless Steel Flanges

Natural Steels is a leading manufacturer, supplier, and exporter of 321/321H Stainless Steel Flanges from India. We maintain a huge inventory of Stainless Steel Flanges and you can buy 321/321H Stainless Steel Flanges at the best price. Please click on Contact us now button or click here to send us your complete requirement to Buy 321/321H Stainless Steel Flanges from Natural Steels.

Our Exporting Countries - Stainless Steel 321/321H Flanges

Exporting 321/321H Stainless Steel Flanges to Singapore, Malaysia, Hongkong, Thailand, Indonesia, Taiwan. Other countries includes  Afghanistan, Albania, Andorra, Austria, Bahrain, Bangladesh, Bhutan, Brunei, Belarus, Belgium, Bulgaria, Cambodia, China, Cyprus, Croatia, Czech Republic, Denmark, Estonia, Egypt, Finland, France, Germany, Greece, Georgia, Hungary, Iceland, Ireland, Italy,  Iran, Iraq, Israel, Japan, Jordan, Kazakhstan, Kuwait, Kyrgyzstan, Lebanon, Latvia, Latin America, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Maldives, Mongolia, Myanmar (Burma), Nepal, North Korea, Netherlands, Norway, Oman, Poland, Portugal, Pakistan, Palestine, Philippines, Qatar, Russia, Romania, Russia, San Marino, Serbia and Montenegro, Slovakia, Slovenia, Spain, Sweden, Switzerland, Saudi Arabia,  South Korea, South Africa, Sri Lanka, Syria,  Tanzania, Tajikistan, Thailand, Turkey, Turkmenistan, Ukraine, United Kingdom, United Arab Emirates (UAE), Uzbekistan, Vietnam, Yemen.