904l Stainless Steel Flange | ASTM A182 904l Flanges | F904l Flanges | Stainless Steel 904l Blind Flange, Slip On Flange, Weld Neck Flange, Lap Joint Flange, Raised Face Flange, FF Flange, SW Flange, Tongue and Groove Flanges

Oshwin Overseas is a leading ASTM A182 904l (904L Flanges) Suppliers and Specialized Stainless Steel Flanges Manufacturers with 904l Flanges and ASME B16 / ANSI B16 Flanges / ANSI B 16.5 Flange Standard (EN 1092-1 / BS4504). Due to good chemical properties of Stainless Steel Flange (1.4539), over 316L, ASTM A182 (F904L) Stainless Steel Pipe Flanges are most used in Chemical Industry, Pharmaceutical Industry, Marine Application, Paper and Allied Industries , Gas Washing, and sulfuric acid production.

ASTM A182 – ANSI B16.5 (F904L) Flange Specification, 904l SS

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

Standards: ASTM A182, ASME B16 / ASME B16.5 / ASME B16.47 / ASME B16.48 / ASME B16.36 Flanges, ANSI B16 / ANSI B16.5 Flanges, DIN 2633 Flanges / DIN 2635 Flange, EN 1092-1 Flanges, BS4504 Flanges etc.

Specifications: ASTM A182 / ASME SA182

Standard Flange Sizes: 1/8″ to 36″

Class: 150Class, 300Class, 600Class, 900Class, 1500Class, 2500Class, PN6, PN10, PN16, PN25, PN40, PN64 etc.

Grade: Stainless Steel 904L | UNS N08904 | WNR 1.4539 | 2RK65 Stainless Steel | RVS 904L | Uranus B6 | SEW 400 |  vdtüv 421 | сталь 904L | acier 904L.

904L Flanges supplied by Oshwin Overseas complies with NACE MR0175/ISO 15156 Standards.

UNS N08904 (904L Flange) is super corrosion resistance as 1.4539 Stainless Steel elevated alloy configuration offers good corrosion and resistance to pitting in a widespread range of atmospheres. 904L Stainless Steel flanges with ASTM A182 (ASME B16) accessible to our customers and are available in different range of diameters wall thinness and sizes. 904L Flanges have various standards ASTM, ASME Flanges, ANSI Flanges, DIN Flanges, EN Flanges, BS Flanges etc. ASME B16 Flanges can be available in ANSI B16.5, ANSI B16.47, Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings

As SS 904L is a high-alloy austenitic stainless steel with low carbon content. 904L Flanges (ASTM A182) is intended for use under severe corrosive conditions. 904L Stainless Steel Flanges has been application proved over many years and was originally developed to resist corrosion in dilute sulfuric acid. 1.4539 Stainless Steel Flange is standardized and approved for pressure vessel use in several countries.

Types of Stainless Steel Flanges 904l

904l Flat Face Flange/ FF Flange – FF Flanges are used when the counter-flanges are flat face. Flat Face Flange mainly used in connection to cast iron equipment, valves, and specialties. This flat face flange has a gasket surface in the same plane as the bolting circle face. FF Flange also comes in Slip On Flat Face Flange / SOFF Flange, Flat Face Weld Neck Flange / FFWN Flange.

904l Raised Face Flange / RF Flange – 904L Pipe Flange are the most commonly used flanges. The raised face thickness for 150Class (ANSI 150 RF Flange Dimensions) and 300Class (ANSI 300 Flange Dimensions) are included in the specified flange thickness and for higher rating they are not included in the flange thickness. Raised Face Slip On Flange / Slip On Raised Face Flange / Flange SORF / SORF Flange, Raised Face Weld Neck Flange/ RFWN Flange, Weld Neck Raised Face Flange / WNRF Flange, Raised Face Long Weld Neck Flange, SWRF Flange / Socket Weld Raised Face, BLRF Flange / Blind Raised Face Flange, LWNRF Flange / Long Weld Neck Raised Face Flange.

Male-Female Face Flanges – These pipe flanges are better version of Raised face flanges.

Tongue And Groove Flange – These pipe flanges are most reliable type of flange joint but are costlier than the other type of flanges.

904l Reducing Flange – Reducing flanges are designed for when there is a change in the pipe size. The predominate flange (dimensions) matching the larger pipe size (NPT) but having a smaller bore matching the smaller pipe size (NPT). These flanges normally come in Blind, Slip-On Reducing Flange, Threaded, Reducing Slip On Flange, Reducing Weld Neck Flange and Weld Neck Reducing Flange. They are available in all pressure classes and provide a good alternative to connecting two different sizes of pipe.
Slip On Flange – Slip-on flanges are fitted over the pipe and then fillet welded. Slip-on flanges are easy to use in fabricated applications.
Weld Neck Flange – Weld neck flanges are circumferentially welded at the neck where the integrity of the butt welded area can be easily examined by radiography. The weld neck is therefore, durable in critical applications. WN Flange also includes Long Weld Neck Flange (LWNF).

904l Socket Weld Flanges – Socket weld flanges are counter-bored to accept the pipe before being fillet welded. The bore of the pipe and flange are both the same to provide good flow characteristics.
Lap Joint Flange / Lapped Flange – Lap Joint Flanges are always used with either a stub end which is butt welded to the pipe with the flange loose behind it. A lap joint is used in low-pressure applications because it is easily assembled and aligned. To reduce costs, these flanges are supplied without a hub.

904l Blind Flange – Stainless Steel Blind Flange is round plate which has all of the relevant bolt holes but no center hole, and because of this feature, this flange is used to close off the ends of piping systems and pressure vessel openings. It also permits easy access to the interior of a line or vessel once it has been sealed and must be reopened.

904l Spectacle Blind Flanges – A spec blind is a combination of a ring spacer and single blind. They are usually permanently installed in a piping system and rotated as needed. Oshwin Overseas is one of the leading Spectacle Blind Flange Manufacturers.

904l Threaded Flange – Stainless Steel Threaded Flange is similar to a slip-on flange, but has internal threads. It is normally used for low pressure and not used where temperature or stress is very high. This flange has a raised face.
Orifice Flanges – Orifice Flanges are used with orifice meters for the purpose of measuring the flow rate of either liquids or gasses in the respective pipeline. Pairs of pressure “Tappings”, mostly on 2 sides, directly opposite each other, are machined into the orifice flange.

904L Flange  Corrosion Resistance

904L gives good resistance to both organic and inorganic acids.The addition of copper in 904L grade gives excellent corrosion resistance against nickel stainless steels, to sulphuric, phosphoric, acetic acids, hydrochloric acids, etc. It also gives a high resistance to pitting in chloride solutions, an excellent resistance to both crevice and stress corrosion cracking.The 904L is much better than austenitic stainless steels due to the higher alloying of nickel and molybdenum.The high percentage of chromium content in 904L gives and maintains a passive film which protects the material in many corrosive environments.

904L Flange  Cold Forming

Cold forming 904L can be done easily. The composition of molybdenum and nitrogen implies more powerful processing equipment may be needed.Most of the time more common methods like cooling with air or water etc are used.

904L  Flange  Hot Forming

Hot and heat forming should be done after uniform heating.Complete annealing should be done before any hot forming in order to retain maximum ductility and corrosion resistance property. It is very important that the whole process should be done above 1100°C.

904L Flange  Machining

The machining of  904L  requires proper care to achieve the expected result. The cutting speed should be slow and proper care should be taken while doing so.

904L Flange  Welding

The 904L material should be allowed to cool in between, preferably to below 150°C temperatures. To obtain good welding properties welded condition, filler material shall be used.Because of high thermal expansion, welding must be carefully planned in advance to ensure that distortion of the welded joint can be kept under control.

904L Flange  Heat Treatment

The heat treatment should be accompanied by cooling in water or air immediately. This treatment should be applied for both solution annealing and stress relieving from the 904L material.

904L SS Flange price:

• US $15000 ~ $17000 – Per Ton

904L Steel Flange Specification:

904L Flange Dimensions:

904L Stainless Steel Physical properties:

904L Stainless Steel Chemical Composition:

904L Stainless Steel Mechanical Properties:

Oshwin Overseas, SS 904L Flanges Distributor:

Oshwin Overseas are engaged in Exporting, Supplying and Stocking Stainless Steel F904L Flanges. These SS 904L Flanges are uniquely composed in a manner that the distance across of the channel consummately fits the width of the ribs. As a result of its solid association and impervious to consumption, these welding and forged flange pines can withstand great conditions, Like high fluctuation of temperatures. We provide all test certificate along with flanges. We personally believe in providing excellent instead of better.