Pipe Fittings and Flanges Manufacturers in India  |   Seamless & Welded Pipe Manufacturers  |   Flexible Hose Pipe Manufacturers  |  Email Us on sales@metline.in

SS 321 Flanges Manufacturer. Buy SS 321 Flanges at Lowest Prices - ASTM A182 F321

SS 321/321H Flanges


SS 321/321H Flanges –  1.4541, UNS S32100, UNS S32109, 1.4878, Buy SS 321 Forged Flanges

Leading Manufacturers & Suppliers of SS 321 Flanges in India, with Exports to 60 Countries. Buy Top Quality SS 321 Forged Flanges, SS 321 Flanges Factory. 1/2 inch NB to 48 inch NB, Custom Sizes in 150 Class to 2500 Class as per ANSI B16.5, Table D, E and as per DIN Standards

SS 321 Forged Forged Flanges – ASTM A182 F321/321H ANSI B16.5

Production Range for Stainless Steel 321/321H Flanges

GradeStainless Steel 321 (1.4541, S32100), Stainless Steel 321H (S32109, 1.4878)
ProductStainless Steel 321/321H Flanges
TypeWeld neck Flanges (WNRF), Slip-on Flanges (SORF), Blind Flanges (BLRF), Lap Joint Flanges (SOLJ), Socket-weld Flanges (SWRF), Screwed (Threaded) Flanges, Long weld neck Flanges (LWNRF), Spectacle Blind Flanges, Spacer & Blind Flanges, Ring Type Joint Flanges (RTJ), Reducing Flanges, Raised Face (RF) Flanges, Orifice Flanges, Large Diameter Flanges, Custom Flanges, Drawing Flanges, Forged Flanges, Plate Flanges, Flat Face Flanges
Sizes1/2″-60″, 150# to 2500#, PN6 to PN 64
SpecificationASTM A182 F321/F321H
DimensionsANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings, Table D, E and as per DIN Standards
Test CertificatesEN 10204 3.1, 3.2
Approvals & InspectionTUV, GL, ABS, BVQI, SGS, Lloyds
HS Code7307

We are a specialized manufacturer of welded and seamless SS 321 flanges for low or high temperatures, and medium or high pressures. Metline is a largest supplier of ss 321 flanges in India. We are offering excellent products and sincere service, and welcome all our customers.

Contact Us If You are Looking to Buy 321/321H “Flanges”!

Call Us Now +919833604219 or Email Us “sales@metline.in”

An international piping materials supplier, Metline welcomes you to send us your enquiries for stainless steel 321/321H pipes, elbows, fittings & flanges and allow us to partner in your growth. We can assure you the best quality products, with the most competitive prices in the industry.

All pipes supplied by Metline are tested according to requirements of the appropriate standards. In all cases the tube leaking test is performed, and supplied with Test Certificates at per EN 10204 3.1 or NABL approved lab test reports. We focus on each and every customer with a personal touch, making us one of the top supplier of stainless steel pipes & tubes and a reliable business partner for all industrial buyers.


SS 321 Flanges Manufacturers (1.4541, S32100) | SS 321H Flanges (S32109, 1.4878) – SS 321 Slip On Flange, SS 321 Weld Neck Flange, SS 321 Blind Flanges

Metline is one of the largest manufacturers of ss 321 flanges in size range of 1/2″ NB upto 48″ in pressure ratings of 150# to 2500#. We specialize in the manufacture and supply of large diameter 100% quality tested flanges with shortest delivery times.

Given our extensive expertise and knowledge in stainless steel industry we can offer stainless steel 321 seamless pipes and fittings, at the most competitive prices in the Industry. We are wholesaler for stainless, acid and heat-resistant steel pipes, fittings and flanges with extensive stocks.

Stainless Steel 321 is a basic austenitic 18/8 steel (Grade 304) stabilised by Titanium (321) addition. SS 321 is used because they are not sensitive to intergranular corrosion after heating within the carbide precipitation range of 425-850°C. Stainless Steel 321 is the grade of choice for applications in the temperature range of up to about 900°C, combining high strength, resistance to scaling and phase stability with resistance to subsequent aqueous corrosion. SS 321H is a modification of SS 321 with a higher carbon content, to provide improved high temperature strength.

321/321H Stainless Steel Chemical Composition

NI9.0 – 12.09.0 – 12.0
C0.08 max0.04 – 0.10
MN2.0 max2.0 max
P0.045 max0.045 max
S0.030 max0.030 max
SI1.0 max1.0 max
CR17.0 – 19.017.0 – 19.0
TI5(C+N) – 0.70 max4(C+N) – 0.70
N0.10 max0.10 max

321/321H Stainless Steel Mechanical Properties

Density8.0 g/cm3
Melting Point1454 °C (2650 °F)
Tensile StrengthPsi – 75000 , MPa – 515
Yield Strength (0.2%Offset)Psi – 30000 , MPa – 205



Go to Top