ss 321 & 321H Flanges (ASTM A182 F 321 Flange)

ss 321 & 321H Flanges

Manufacture, Supplier, Stockist & Exporter


  • ss 321 flanges – Supplier , Manufacturer , Stockist – Astm A182 – B16.5 – ss 321 Slip on flange , Weldneck flange , Lap joint flange , Plate flange , Spectacle Blind Flange,  ss 321H flanges Flanges ,Weldneck Flange ,ss 321H slipon Flange, ss 321 Plate Flanges, ss 321 Lap joint Flange
  • ss 321H flange – Supplier , Manuafacturer, Stockist – ASTM A182 – B16.5 – UNS S32109 slip-on flage, weldneck flange, Lap joint flange , Blind flange ,  Spectacle Blind Flange , Plate Flange .
  • ASTM A182 F SS 321 Flange , UNS S32100 Flange , UNS S32109 Flange supplier , Manufacturer 

Ganpat Industrial Corporation is one of the leading ss 321 Flange supplier, ss 321 flange manufacturer and ss 321 Flange Stockist .We Deal in Various type of  stainless steel 321 Flanges which are as followASTM A182 F321 Flange , Stainless steel 321H Flange, ss 321 Weldneck Flange, ss 321 Slip-on Flange , ss 321 flange & ss 321H flanges Blind Flange , ss 321 flange & ss 321H flanges Slip-on Flange, ss 321 Threaded Flange, ss 321 Nippo Flange, ss 321H Socket Weld Flange, ss 321 flange & ss 321H flanges spacer Flange, ss 321 flange & ss 321H flanges Spectacle Blind Flange,SS 321 flange & ss 321H flanges Lap joint Flange, ss 321H Plate Flange   etc in India. GIC offer product with NABL approved lab test report or EN-10204 .3.1 Certificates. GIC keep huge inventory of ss 321H Flange, ASTM A182 F321H Flange , in Mill finished, Polished finished, sand blasted, annealed and pickled etc.  GIC is well known Dealer in ss 321 flange & ss 321H flanges Products .We provide one of the best price for ss 321 flange & ss 321H flanges. UNS Number for ss 321 is S32100,UNS number for ss 321H is S32109 . SS 321 flange & ss 321H flanges Belong to family commonly known as Austenitic Stainless Steel which exhibits excellent resistance to corrosive environment . ss 321H is  lower carbon version of ss 321, where as 321H guarantees maximum carbon . ss 321 is standard “18/8” stainless with higher Chromium and lower Carbon content . It is most commonly and widely used. ss 321 is Formability,Weldability ,corrosion and oxidation resistance . Ganpat Industrial Corporation maintain a huge stock of ss 321 bend and pipe fittings. GIC provide ss 321 flange & ss 321H flanges Flanges both in standard and non stand size . GIC exports ss 321 Flanges in large quantity as well as small quantity as per demand . we also manufacturer ss 321 flanges in various sizes . we are also well equipped to manufacturer ss 321 Pipe and ss 321 fittings of large dimension.

Ganpat Industrial Corporation is one of the leading exporter , supplier and manufacturer and Stockist of ss 321 Flange & ss 321H Flange in India . GIC manufacturer Premium quality SS 321 Flanges with no Defects . We maintain a High Quality ss 321 flange & ss 321H flange Material to supply it to our overseas Customers. GIC is well know in overseas Market for it High Quality Inconel Pipe fittings and Quick and Fast Delivery. The main Reason Being we are well Equipped to Produce quality Product and having numbers of Ware houses near Sea ports and Air ports .

With High Research and Development Programme we are very well Equipped to Pack the Goods as per the International Standard. We place a lot of emphasis on Packing and Labelling so as to Provide Premium Quality UNS S32100 flange & UNS S32109 flange to our Domestic and International Customer . SS 321 flange & SS 321H flange and Fittings are carefully packed with layers of Plastic foils and Bubble wrapped and carefully placed in Wooden Boxes .Packing Done my GIC is sea Worthy and Air Worthy Packing.

We also provide SS 321flange & SS 321H flange along with the NACE 3.1 Material Test Certificates. All Raw material in GIC are being PMI (Postive material identification) Tested before Manufacturing . Having a good relationship with our client in overseas buyer we are able to source material from different countries and supply the same to our overseas customers . We also Export UNS 32100 flange & UNS 32109 flanges of Various Origin Such as Indian, European , Japan Origins etc.

Why Stainless steel 321?

More Detail on ss 321/321H

UNS S32100(Stainless steel 321) is really titanium stabilizes austentic steel with best corrosion resistance. It has outstanding amount of resistance to intergranular deterioration (corrosion) after it contact with temperatures in the chromium carbide precipitation range of 800-1500°F. stainless steel 321(UNS S32100) IS Compared with ss 304(UNS S30400) With higher amount of nickel and stabilized with titanium . titanium which does preferentially response to co2(carbon) in steel and prevent destruction of Cr(Chromium) Carbides at grain boundries .Stainless steel 321(UNS S32100) generally response Properly to hardening by cold working . It has good welding characteristics.Furthermore, it possesses very good lower temp toughness.

Grade ss 321 and ss 347 are austenitic steel i.e austenitic 18/8 steel(Grade ss 304) which is stabilized by titanium . The key feature of this grades are that they are not sensitive to intergranular corrosion after heating process with in proper precipitation range i.e. 425-850°C.Stainless steel 321H( UNS S32109) is modification of stainless steel 321(UNS S32100) With higher carbon in it . Which helps to provide better high temps strength. Stainless steel 321( UNS S32100) is not recommended as welding consumable as titanium does not get transfer will across high temps arc. Stainless steel 347 (UNS S34700) Is mostly used for welding 321. Grade Stainless steel is commonly used as parent plate material.

Both ss 321 and 347 have excellent features of forming and welding . and are be easily brake or rolled . Stainless steel 321 does not polish well so it is not recommended for decorative or furnishing applications

Flanges Available in ASTM A182 F321

ss 321/321H Flanges


SS 321 FlangesSS 321 Lap Joint Flange
SS 321 Weldneck FlangeSS 321 Threaded Flange
SS 321 Slipon FlangeSS 321 Socket Weld Flange
SS 321 Blind FlangeSS 321 Long Weldneck Flange
SS 321 Plate FlangeSS 321 Spectacle Blind Flange

Flanges Available in ASTM A182 F321H

ss 321H Flanges


SS 321H FlangesSS 321H Lap Joint Flange
SS 321H Weldneck FlangeSS 321H Threaded Flange
SS 321H Slipon FlangeSS 321H Socket Weld Flange
SS 321H Blind FlangeSS 321H Long Weldneck Flange
SS 321H Plate FlangeSS 321H Spectacle Blind Flange

Chemical Composition of ss 321

ss 321 Flange

 SS 321

Carbon0.08 Max.
Manganese2.00 Max.
Sulfure0.030 Max.
Silicon0.075 Max.
Phosphorus0.045 Max.
Nitrogen0.10 Max.

Chemical Composition of ss 321H

ss 321 Flange

 SS 321H

Carbon0.04-1.10 Max.
Manganese2.00 Max.
Sulfure0.030 Max.
Silicon0.075 Max.
Phosphorus0.045 Max.
Nitrogen0.10 Max.

Mechanical Properties

ss 321 Flanges

 SS 321

Densilty8.0 g/cm3
Melting Point1400 °C
Tensile StrenghtPsi – 75000,MPa- 515
Yield Strength (0.2% offset)PSi – 3000, MPa- 205

Specification of Stainless steel 321/321H Flange

ASTM A182 F321/321H Flanges

DimensionASTM , ASME
Sizes 1/2″ To 48″
SchedulesSCH 10, SCH20, SCH30, SCH40, STD, SCH60, XS, SCH80, SCH120, SCH140, SCH160, XXS
TypesSlipon Flange ,Weldneck Flange, plate Flange,Lap Joint Flange, Socketweld, Threaded,Blind Flange
Class or Pressure #150, #300,#600,#900,#1500,#300

Application for ss 321/321H Flanges

ss 321 Flanges & ss 321H Flange

  • Industrial Fabrication
  • Bellows
  • Heating element Tubing
  • Spiral welded tube for burner pipes and flues
  • Expansion joints
  • Aircraft exhaust manifolds(Aerospace)
  • Heat exchangers
  • Chemical processing
  • Petroleum Refining
  • Waste Threatment

Key Properties of SS 321/321H Flange

ss 321 Flanges & ss 321H Flange

  • ss 321 and 321H Can be easily welded and proccessed
  • ss 321 can me exposed to maximum temperature of scaling to 2100-2300 °F and are suggested for Bending, Forging, upsetting and other hot process .
  • ss 321 can not be suitable for work below 1700°F
  • ss 321 should be anneled and water quenched after maximum corrosion resistance
  • ss 321 is Ductile and easily forms
  • ss 321 is welded by common standard process and post weld heat treatment is not required.
  • SS 321 hardening is similar to ss 304

Other Properties OF ASTM A182 F321

ss 321 flanges & ss 321H Flange

  • Cold Working – 321 are very ductile and can be easily cold world by deep drawing, Forging, upsetting, bending etc . It may require immediate annealing. High Hardness and strength is achieved should cold working
  • Formability – 321 & 321H is highly formability due to its combination of lower strength and shapes
  • Weldability – Stainless steel is considered as weldable by common fusion and resistance technique both with and without filler metals. SS 321 can be welded by ss 347 rods and Electrodes.
  • Corrosion Resistance – SS 321 & 321H is compared with ss 304 grade in annealed condition. General resistance of ss 321 is affected if heated for long period of time .It has been developed for applications. Where the unstabilized Chromium-nickel steel,such as stainless steel 304 would be susceptible to intergranular corrosion/
  • Heat Theatment – SS 321 is heat to 950-1120°C and rapidly cooled for maximum corrosion resistance. Ss 321 can not be hardened by heat treatment

Additional Service

ASTM A312 TP321 Flange

  • Quality Assurance – Ganpat Industrial Corporation Undergoes Inspection from starting point of purchasing product till the product is dispatched.
  • Packing & Marking – Ganpat Industrial Corporation pack the ss 321H Buttweld Fittings according to standard packing so as to avoid the damages during the transit , Goods are packed in export standard wooden boxes. Packing is as per sea worthy packing and air worthy packing .
  • Standard Product – Ganpat Industrial Corporation maintain and Examine the Buttweld Fittings as per standard size and provide visual conformity of to ASTM,ASME,DIN,EN,MSS and JIS code of standard
  • Testing Facility  – Ganpat Industrial Corporation provides number of testing facility on request such as Positive Material Identification Test (PMI), Chemical Test , 100% Radiography Test and many More.
  • Test Certificates – Ganpat Industrial Corporation Provides MTC (material test certificates)  for Buttweld Fittings and flanges as per 3.1 , Raw Material Certificates, Third Party Inspection Report, 100% Radiography Report, PMI reports etc .GIC provides this certificates sticky along with the goods only
  • Origin – Ganpat Industrial Corporation maintain a huge Stock of SS 321 Buttweld Fittings and flanges of Indian, European and Japan Origin.
  • Ganpat Industrial Corporation can also process or Undergo beveling process at the end or edge of the pipe for welding or other purpose
  • Ganpat Industrial Corporation provides Heat treatment to undergo some mechanical changes

We even export to more than 45 countries like UAE, USA, Brazil, Chile, New York,Iran, Qatar, Iraq, Australia, Indonesia, Oman, Italy, Germany, Kuwait , Finland, Jordan, Singapore, Malasiya, Bahrain, Jordan, Saudo Arabia, Netherland, Canada, Italy, Serbia, Turkey, Mexico, Egypt, Venezuela, Poland, South Africa, Peru, Madagascar, Srilanka, Yemen, Nigeria, Vietnam, Russia, Switzerland, Denmark, Ireland, Israel, South Korea,Romania, Argentina, Colombia, Norway , Fiji, Ghana, Greece, Syria, Dubai, Bangkok.

We Even Supplied this ASTM A182 TP 321/321H Flange across all Major Cities like Mumbai, Kolkata,Chennai, Delhi, Hyderabad, Nasik, Pune, Tamil Nadu, Kerala , Surat, Gujarat, Rajasthan, Nagpur, Indore, Thane , Ranchi , Vadodara, Bhiwandi, Assam , Ankleshwar , Mangalore,Bangalore etc.

For More Detail and Quick Quote

dhruvilss 321 & 321H Flanges (ASTM A182 F 321 Flange)