Stainless Steel 304 / 304L Flanges

Stainless Steel 304 Threaded Flanges Suppling at Indonesia, SS DIN 1.4301 / 1.4306 RTJ Flanges, ASTM A182 SS Forged Flanges Manufacturer, Stainless Steel 304L Reducing Flanges, SS 304 / 304L Flanges Manufacturing at Tanzania, Stainless Steel 304 / 304L Flanges Suppling at Belgium, ASME 16.47 Series B Steel Flanges Manufacturer & Stockist in Mumbai, India.

Alpha Overseas(AOS) manufactures SS 304 / 304L Flanges, which finds its larger demand in the soft tempers and can be used in severe corrosive environments. Entire range of our Stainless Steel 304 Flanges is procured from most reliable and trusted experts in our selling business. These SS 304 Flanges has excellent resistance to a wide range of atmospheric environments and many corrosive media. The balanced austenitic structure of our Alloy 304 Slip On Flanges enables it to be severely deep drawn without intermediate annealing, which has made this grade dominant in the manufacture of drawn stainless parts such as sinks, saucepans and hollow-ware. These Grade 304 Blind Flanges has excellent toughness, even down to cryonegic temperatures which are defined as very low temperatures. Our 304 Stainless Steel Blind Flanges resists atmospheric corrosion, as well as, moderately oxidizing and reducing environments. If intergranular corrosion in the heat affected zone may occur, it is suggested that these SS 304L Lap Joint Flanges to be used.

SS 304/304L Flanges
SS 304/304L Flanges
Stainless Steel 304/304L Flanges
Stainless Steel 304/304L Flanges

Stainless Steel 304 Blind Flanges Suppling at Egypt, SS UNS S30400 / S30403 Weld Neck Flanges, Stainless Steel 304 Slip On Flanges Suppling at Qatar, SS 304L Socket Weld Flanges, Stainless Steel 304 /304L Plate Flanges Manufacturing at Spain, SS 304 / 304L Lap Joint Flanges, SS 304L SWRF Flanges Supplier & Exporter in Mumbai India.

The austenitic SS 304L Flanges are also considered to be the most weldable of the high-alloy steels and can be welded by all fusion and resistance welding processes. These Alloy 304L Socket Weld Flanges is found in a variety of commercial sectors, particularly in the chemical industry.

Our Grade 304L Weld Neck Flanges may be joined by all commonly used brazing and welding methods including oxyacetylene. Low temperature properties of these 304L Stainless Steel Flanges respond well to hardening by cold working.


ASTM A182, A240 SS Flanges Specification :

Size : 1/2" NB TO 48" NB

Specification : ASTM A182 / A240, ASME SA182 / SA240

Standards : ANSI Flanges, ASME Flanges, DIN Flanges, EN Flanges, BS Flanges etc.

Class : 150#, 300#, 400#, 600#, 900#, 1500# & 2500#.

Dimensions : ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings


SS 304 / 304L Flanges Equivalent Grades

SS 304 1.4301 S30400 SUS 304 304S31 08Х18Н10 Z7CN18‐09 X5CrNi18-10
SS 304L 1.4306/1.4307 S30403 SUS 304L 304S11 03Х18Н11 Z3CN18‐10 X2CrNi18-9 / X2CrNi19-11


Stainless Steel 304 / 304L Flanges Chemical Composition

Element Ni C Mn P S Si Cr
SS 304 8.0 – 11.0 0.08 2.0 max 0.045 max 0.03 max 1.0 max 18.0 – 20.0
SS 304L 8.0 – 13.0 0.35 2.0 max 0.045 max 0.03 max 1.0 max 18.0 – 20.0


SS Flanges Mechanical & Physical Properties

Element Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
SS 304 8.0 g/cm3 1400 °C (2550 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %
SS 304L 8.0 g/cm3 1400 °C (2550 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %

Testings (Destructive, Non Destructive):
  • Positive Material Identification - PMI Testing
  • Chemical Analysis - Spectro Analysis
  • Mechanical Testing Such as Tensile, Elongation
  • Micro Test
  • Macro Test
  • Hardness Test
  • Pitting Resistance Test
  • Intergranular Corrosion (IGC) Test
  • Flaring Test
  • Flattening Test
  • Hydrostatic Test
  • Hydrogen-Induced Cracking (HIC) Test, NACE TM0284
  • Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177
  • Radiography Test
  • Dye Penetrant Test (DP Test)
  • Ultra Sonic Test (UT)
  • Eddy Current Testing
  • Impact Test
  • Bend Test


  • We understand the importance of packaging specially in case of international shipments as the consignment has to go through a number of channels to reach the final destination, thus we take proper care of packing.
  • We pack our goods in a various ways depending on the products. The different ways in which our products are packed are:
    • Shrink-wrapped
    • Wooden Boxes
    • Wooden Pallets
    • Wooden Crates
    • Carton boxes


  • All our products will have complete marking details which are co-related to the test certificates we supply.
  • In case of orders for cut piece of Pipes, Sheets or Round Bars, the marking is transferred from the product from which it is cut. In such cases we provide Letter confirming the marking transfer and picture of the product from which it is cut.


Delivery Time:
  • If the items are available in stock, we take 2 days from the date of receipt of advance payment to clear the shipment and send it to port.
  • And in-case the items are not availabe in stock, the time taken for manufacturing depends on the size, quantity and grade.
  • However we can claim the fact that we can compete with anyone in India on Delivery time and most of the time our production time is the least.
  • We have tied up with strong logistic partners in India which can undertake any type of shipping activites and make sure that there is no delay in shipment.


  • We welcome stage wise inspection, final stage inspection from any of your representative or third party inspection agencies.
  • We regularly have inspections ongoing at our premises from internationally acclaimed Inspection Agencies such as TUV, Llyods, BVIS, SGS, DNV etc.


  • Furnaces (piping, doors, burners, fans and recuperators)
  • Components (Cryogenic)
  • Industries processing food
  • Bed Furnaces (Fluidized) suc as grids, wind boxes, piping, coal combustors
  • Stainless Steel 304/304L is used in smelter and steel melting equipment, continuous casting equipment in Steel Plants and Ore Processing Plants
  • Petroleum and Petrochemical refineries for catalytic recovery systems, flares, recuperators, tube hangers
  • Stainless Steel 304/304L is used in Power Generation for coal gasifier internals, pulverized coal burners, tube hangers
  • Sintering/Cement Plants – burner shields, burners, wind boxes feeding and discharging systems
  • Thermal Process Plants for annealing covers and boxes, burner grids, doors, fans, muffles and retorts, recuperators, walking beams

Other Types Of SS Flanges
  • SS 304L WNRF Flanges
  • Stainless Steel 304 BLRF Flanges Distributors Oman
  • SS DIN 1.4307 Lap Joint Flanges Suppliers
  • SS UNS S30400 Weld Neck Flanges
  • 304 Stainless Steel Blind Flanges Suppliers
  • 304 Stainless Steel Plate Flanges
  • SS 304 Weld Neck Flanges
  • 304L SS Reducing Flanges Exporter
  • 304L SS Pipe Flanges
  • Stainless Steel 304 Lap Joint Flanges
  • SS 304/304L Slip On Flanges Exporter
  • Stainless Steel 304/304L Threaded Flanges
  • Stainless Steel 304 Lap-Joint Flanges
  • SS 304L Orifice Flanges Stockist
  • Stainless Steel 304 DIN Flanges
  • Stainless UNS S30400 Ring Type Joint Flanges
  • SS 304L Long Weld Neck Flanges Exporter
  • ASTM A182 SS 304 Flanges
  • ASME SA182 Stainless Steel 304 Flanges Suppliers at Tanzania
  • SS 304L RTJ Flanges Stockist
  • SS 304/304L Industrial Flanges Manufacturer
  • 304 SS Forged Flanges Dealers
  • Stainless Steel DIN 1.4306 Flanges
  • Stainless Steel 304L BLRF Flanges

Approved manufacturer of
Sabic approved Stainless Steel 304 Pipe Flanges
KNPC approved SS 304 Slip On Flanges
Williamson approved SS 304L Socket Weld Flanges
MARAFIQ approved Stainless Steel 304L Weld Neck Flanges
Magnetrol approved 304 Blind Flanges
QATARGAS approved 304L Stainless Steel Threaded Flanges
ONGC approved Stainless Steel 304/304L Forged Flanges
FW approved Stainless Steel 304/304L BLRF Flanges
IBR approved SS 304L Plate Flanges
Alba approved Stainless Steel 304 Ring Type Joint Flanges
Kuwait Oil Company approved 304L Lap Joint Flanges
Egyptian General Petroleum Corporation approved Stainless Steel 304 Industrial Flanges
Industry We Serve
Stainless Steel 304 WNRF in Petrochemical Industry
ASME Flanges in Oil & Gas Industry
ASTM A182 Stainless Steel 304 RTJ Flanges in Power Plant
ASTM A182 Stainless Steel 304L Long Weld Neck Flanges in Pharmaceuticals Industry
304 SS Spectacle Blinds Flanges in Chemicals Industry at Netherland
SS 304L Loose Flanges in Defence Industry
304 Stainless Steel Industrial Flanges in Food and Beverages Industry
SS 304L Pipe Flanges in Sugar Industry
Stainless Steel 304 Screwed Flanges in Paper Industry
304L Stainless Threaded Flanges in Cement Industry at Sri Lanka
304 BLRF Flanges  Dairy Industry
Flanges in Mining Industry

We Supply Our Stainless Steel 340/304l Flanges in Countries like


We are Exports in Exporting SS 304 Flanges worldwide

We are Exporter of Stainless Steel 304 Flanges in Worldwide Such as India, Italy, Sweden, Mongolia, Croatia, United Arab Emirates, Philippines, Libya, Lithuania, Austria, Kenya, Gabon, Vietnam, Chile, Colombia, Romania, Spain, Jordan, Belarus, Iran, Denmark, Indonesia, Azerbaijan, Bahrain, New Zealand, Trinidad & Tobago,Tunisia, Lebanon, Ghana, Egypt, Costa Rica, Poland, Morocco, Greece, Kuwait, Netherlands, South Korea, Australia, United Kingdom, Russia, Pakistan, Switzerland, Portugal, Qatar, Hungary, Kazakhstan, Bhutan, Israel, Namibia, Ukraine, Saudi Arabia, Zimbabwe, Belgium, Nigeria, Yemen, Ecuador, Bulgaria, Gambia, Angola, Iran, Norway, Slovakia, Chile, South Africa, Czech Republic, Puerto Rico, Japan, Bangladesh, Iraq, Brazil, Peru, Finland, Oman, Venezuela, Estonia, Bolivia, Germany, Macau, Mexico, Sri Lanka, China, Serbia, Afghanistan, Singapore, Mexico, Hong Kong, Canada, Nigeria, Poland, Algeria, Malaysia, Turkey, Taiwan, Argentina, Nepal, Thailand, Tibet, Ireland, United States, France.

We have supplied of SS 304L Flanges to following places

We are Suppliers of Stainless Steel 304L Flanges in India Such as Mumbai, Perth, Calgary, Lahore, Chandigarh, Hanoi, Surat, Milan, Melbourne, Pimpri-Chinchwad, Jeddah, Houston, Nagpur, Coimbatore, Ahmedabad, Bangkok, Kanpur, Edmonton, New York, Navi Mumbai, Singapore, Moscow, Noida, Visakhapatnam, Caracas, Rio de Janeiro, Gurgaon, Thane, Ranchi, Montreal, Geoje-si, Bogota, Dammam, Hong Kong, Kuala Lumpur, Brisbane, Toronto, Secunderabad, Port-of-Spain, Madrid, Sharjah, Ankara, Sydney, Faridabad, Dallas, Jamshedpur, Muscat, La Victoria, Bhopal, Manama, Santiago, Jakarta, Indore, Riyadh, Howrah, Kolkata, Al Jubail, Ho Chi Minh City, Rajkot, Seoul, Al Khobar, Cairo, Busan, Chennai, Los Angeles, Nashik, Ulsan, Vadodara, Atyrau, Courbevoie, Baroda, Hyderabad, Bengaluru, Jaipur, Ludhiana, Kuwait City, Petaling Jaya, Karachi, Thiruvananthapuram, Dubai, Lagos, Gimhae-si, Pune, Chiyoda, Granada, Doha, Colombo, Istanbul, Aberdeen, Haryana, Ahvaz, London, New Delhi, Ernakulam, Mexico City, Abu Dhabi, Tehran, Algiers, Vung Tau.