SS 904L Flanges

SS 904L Weld Neck Flanges Suppling at South Africa, Stainless Steel UNS N08904 RTJ Flanges Manufacturing at Croatia, SS 904L Forged Flanges, Stainless Steel 904L Slip On Flanges, SS 904L Orifice Flanges Suppling at Saudhi Arabia, SS Flanges, Stainless Steel 904L Flanges Exporter & Supplier in Mumbai India.

Alpha Overseas(AOS) is one of the eminent manufacturers that offer Stainless Steel 904L Flanges, which is intended for use under severe corrosive conditions. 904L SS Flanges has excellent weldability and formability, and contain high amounts of expensive ingredients, such as nickel and molybdenum. With its highly alloyed chemistry — 25 % nickel and 4.5 % molybdenum, Stainless Steel 904L Slip On Flanges provides good chloride stress corrosion cracking resistance, general corrosion and pitting resistance superior to SS 316L and SS 317L molybdenum enhanced steels. SS 904L Blind Flanges is considered especially well-suited to handling phosphoric acid and sulphuric acid, though at high temperatures it may be subject to stress corrosion cracking. Use chip breakers in SS 904L Weld Neck Flanges, wherever possible, for to overcome problems with long draggy chips. For acids and acid solutions containing halide ions – such as hydrofluoric acid, hydrochloric acid, chloride-contaminated sulphuric acid and phosphoric acid produced according to the wet process at elevated temperatures, and pickling acid based on hydrofluoric acid and nitric acid mixtures, this Stainless Steel 904L Socket Weld Flanges is preferable. Stainless Steel 904L Orifice Flanges has excellent resistance to warm seawater and chloride attack, where they are also used in the chemical industry to process corrosive chemicals.

SS 904L Weld Neck Flanges
SS 904L Weld Neck Flanges
SS 904L Slip On Flanges
SS 904L Slip On Flanges

ASTM B649 SS Slip On Flanges Suppling at Spain, Stainless Steel DIN 1.4539 Reducing Flanges Suppling at Oman, ASTM B649 SS SORF Flanges Manufacturer, SS 904L Screwed Flanges Manufacturing at Tanzania, Stainless Steel 904L Pipe Flanges Manufacturer & Stockist in Mumbai, India.

Stainless Steel 904L Ring Type Joint Flanges is an austenitic stainless steel specification offering moderate to high corrosion resistance. By using Alloy 904L Flanges, you get high alloyed and acid-proof stainless steel, developed to resist corrosion in dilute sulphuric acid.


SS 904L Flanges Specification :

Specifications : ASTM B649 / SB649

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

Size : 1/2" (15 NB) to 48" (1200NB)

Pressure Class : Class 150, Class 300, Class 400, Class 600, Class 900, Class1500, Class 2500 | PN6, PN10, PN16, PN25, PN40, PN64 etc.


SS 904L Flanges Equivalent Grades

SS 904L 1.4539 N08904 Z2 NCDU 25-20 X1NiCrMoCu25-20-5 904S13 STS 317J5L


Stainless Steel 904L Flanges Chemical Composition

Element Ni C Mn P S Si Cr N Mo Cu
SS 904L 28.00 - 23.00 0.20 2.00 0.045 0.035 1.00 23.0 - 19.0 0.25 - 0.10 5.00 - 4.00 2.00 - 1.00


SS 904L Flanges Mechanical & Physical Properties

Element Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
SS 904L 8 1300 - 1390 ℃ 490 220 35% min

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
  • SS 904L 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
  • SS 904L 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 904L Flanges
  • ASTM B649 SS Lap Joint Flanges
  • SS 904L Industrial Flanges
  • Stainless Steel 904L WNRF Suppliers
  • SS UNS N08904 RTJ Flanges
  • ASME SB649 SS Pipe Flanges Suppliers at UAE
  • SS 904L Slip On Flanges
  • Stainless Steel 904L Socket Weld Flanges
  • SS 904L Weld Neck Flanges
  • SS 904L Blind Flanges
  • Stainless Steel 904L Threaded Flanges Stockist
  • SS 904L Forged Flanges
  • Stainless Steel 904L Ring Type Joint Flanges
  • SS DIN 1.4539 Orifice Flanges Exporter
  • ASTM A649 SS Long Weld Neck Flanges
  • SS 904L Loose Flanges Suppliers
  • Stainless Steel 904L Flanges Suppliers at Netherland

Approved manufacturer of
Sabic approved SS 904L Screwed Flanges
KNPC approved Stainless Steel 904L Industrial Flanges
Williamson approved SS 904L Loose Flanges
MARAFIQ approved ASTM B649 SS Spectacle Blinds Flanges
Magnetrol approved SS 904L Long Weld Neck Flanges
QATARGAS approved Stainless Steel 904L DIN Flanges
ONGC approved SS 904L Reducing Flanges
FW approved ASME SB649 SS WNRF
IBR approved SS DIN 1.4539 Plate Flanges
Alba approved ASTM B649 SS Blind Flanges
Kuwait Oil Company approved SS 904L Screwed / Threaded Flanges
Egyptian General Petroleum Corporation approved SS 904L Weld Neck Flanges
Industry We Serve
Stainless Steel 904L Flange in Petrochemical Industry
SS UNS N08904 Orifice Flanges in Oil & Gas Industry
Stainless Steel 904L Ring Type Joint Flanges in Power Plant
Stainless Steel 904L Long Weld Neck Flanges in Pharmaceuticals Industry at Philippines
Stainless Steel 904L Socket Weld Flanges in Chemicals Industry
SS Lap-Joint Flanges in Defence Industry
SS 904L Threaded Flanges in Food and Beverages Industry
ASTM B649 SS 904L Slip On Flanges in Sugar Industry
SS 904L Forged Flanges in Paper Industry
SS 904L Threaded Flanges in Cement Industry
SS DIN 1.4539 Weld Neck Flanges Industry at Belgium
SS 904L Socket Weld Flanges in Mining Industry

We Supply Our SS 904L Flanges in Countries like


We are Exports in Exporting SS 904L Flanges worldwide

We are Exporter of Stainless Steel 904L Flanges in Worldwide Such as Zimbabwe, Gambia, Spain, Morocco, Mongolia, Bulgaria, Italy, Singapore, Ireland, Japan, Ghana, Slovakia, Belarus, Afghanistan, Norway, Chile, Yemen, Macau, Kazakhstan, Mexico, Bhutan, Canada, Venezuela, Belgium, Greece, Vietnam, Israel, Czech Republic, United Kingdom, Sri Lanka, Gabon, Ukraine, Philippines, Indonesia, Ecuador, Taiwan, Austria, Mexico, Egypt, Hong Kong, Namibia, Lithuania, Bolivia, Bahrain, Thailand, Portugal, Germany, Brazil, Argentina, Russia, Peru, Finland, Lebanon, Malaysia, Australia, Sweden, Costa Rica, Pakistan, Saudi Arabia, Serbia, Colombia, Kuwait, Turkey, India, Qatar, Netherlands, Angola, Nigeria, United Arab Emirates, France, Azerbaijan, Bangladesh, Tibet, Poland, Jordan, Iran, Libya, Nepal, Croatia, Romania, Puerto Rico, Estonia, China, United States, Chile, Switzerland, South Korea, Iran, Denmark, Iraq, Oman, Nigeria, New Zealand, Trinidad & Tobago,Tunisia, Poland, South Africa, Hungary, Kenya, Algeria.

We have supplied of Stainless Steel 904L Flanges to following places

We are Suppliers of SS 904L Flanges in India Such as Navi Mumbai, Moscow, Ranchi, Ankara, Thane, Gurgaon, Rio de Janeiro, Chandigarh, Granada, Baroda, Pimpri-Chinchwad, Dubai, Chiyoda, Ernakulam, Nagpur, Toronto, Dallas, Haryana, Vung Tau, Melbourne, Howrah, Montreal, Courbevoie, Sharjah, Visakhapatnam, Busan, New Delhi, Pune, Ludhiana, Abu Dhabi, Singapore, London, Brisbane, Tehran, Al Jubail, Geoje-si, Hanoi, Jamshedpur, Istanbul, Los Angeles, Riyadh, Dammam, Bangkok, Colombo, Seoul, Houston, Caracas, Santiago, Chennai, Algiers, Al Khobar, Bhopal, Vadodara, Muscat, Indore, Kolkata, New York, Nashik, Jakarta, Mexico City, Madrid, Coimbatore, Ahvaz, Doha, Calgary, Rajkot, Port-of-Spain, Aberdeen, Ulsan, Milan, Manama, Kuwait City, Karachi, Noida, Hyderabad, Lahore, Kuala Lumpur, Faridabad, Edmonton, Hong Kong, Secunderabad, Cairo, Atyrau, Lagos, Kanpur, Jeddah, Surat, Bengaluru, La Victoria, Sydney, Gimhae-si, Jaipur, Petaling Jaya, Bogota, Ho Chi Minh City, Mumbai, Ahmedabad, Perth, Thiruvananthapuram.