Flange

Your Flange Manufacturers

We 13 years of CNC machining experience.In 2015, Jenkin decided to enter foreign market.Currently, we have 27 CNC 3 axis milling machines, 1 CNC 5 axis machine, 2 lathes and 3 CNC mill-turn combination machines.

Why Choose Us

Precision and Quality
At our manufacturing facility, we prioritize precision and quality above all else. Our state-of-the-art equipment and experienced team ensure that every part we produce is crafted to exacting standards, with exceptional attention to detail.

Comprehensive Capabilities
With a wide range of manufacturing capabilities, including plastic injection molding, metal injection molding, aluminum die casting, zinc die casting, and laser cutting, we can handle all of your custom metal and plastic parts needs in-house. This means faster turnaround times and greater control over the production process.

Flexibility
We're flexible and adaptable to meet the unique needs of each of our clients. Whether it's a small, one-off project or a large-scale production run, we can tailor our manufacturing process to suit your specific requirements.

Certification
As a ISO9001 certificate CNC machining manufacturing vendor, we not just provide high quality production service, but design engineering solutions.

Features of SS Flanges

Our professional engineers are manufacturing wide range of compression fittings in all sizes. Our company involved in all types of flanges with assured quality features and used in all pipes.
●Simply adjustable
●Light weight
●Long lasting feature
●Superior quality
●Reasonable price

Flange Surface Finishings and Coatings

The flange finish—the roughness or smoothness as well as type of serrations—is completed after the flange is cast, forged, or cut. Flange finish requirements vary based on the selected standard and application. Flange finish options include continuous and concentric serrated, smooth, mill or rolled, and machined finish. We offer modifications to stock items and custom machining so you can get the exact product you need for every application.

Protective coatings are applied prior to packaging and shipment.

Flange production techniques, including cast, cut, or forged, can affect the overall performance of the flange. To determine the appropriate technique, consider your intended application and refer to any relevant piping standards. For more information about flange types, materials, and requirements, browse our Resource Center or contact one of our sales staff to discuss.

Common Flange Manufacturing Methods

Flanges are manufactured by shaping, then machining, drilling, and finishing to the proper specifications. There are a variety of ways flanges are made, including cast, cut, and forged manufacturing methods.

Cast Flange Production Method

The cast manufacturing method begins with molten metal that's poured into a mold to form the desired shape—in this case, a flange. After the liquid metal has hardened, the mold is opened and the casting is removed, then machined to the necessary dimensions and surface finish. Flanges produced by casting cost less to produce, and there is less waste involved in the manufacturing process. However, there may be more defects than forged flanges due to the less compact internal structure. As a result, cast flanges may be more prone to failure in high pressure or temperature applications.

Cut Flange Production Method

The cut flange (or plate flange) manufacturing process begins by flattening steel metal stock using rollers to thin the material until it reaches the intended plate thickness. Then, the flange is cut to the appropriate Outer Diameter (OD) and Inner Diameter (ID) (except blind flanges which have no center bore and do not require an ID) using a torch, laser, or water jet.

Bolt holes and necessary serrations are cut, and the flange is further machined to exact specifications. Flanges produced using the cut manufacturing method offer a lower production cost, but more scrap materials waste. Cut flanges are typically not as strong as flanges produced using other manufacturing techniques.

Forged Flange Production Method

Forged flanges are manufactured by heating steel billets, slabs, or other metal stock, then compressing the material using a power hammer, press, or die to shape the flange from a solid state. This process develops a continuous grain flow for improved strength. After the flange is forged, it is machined and finished to the appropriate specifications. Forged flanges are often more resistant to wear, but the production cost is greater.

Applications and Uses of Flanges

Manufacturing industries

For instance, the presence of flanges in injection molding machines, plays a vital role in the mold-making process. They provide secure connections at the joints of, equipment like hydraulic and pneumatic systems and mold attachment. Proper connections allow for control and facilitate precise alignments among other factors.

Power Generation

In power generation facilities like hydroelectric and power plants, flanges serve critical purposes. They guarantee strong and secure connections at the joints of pumps, turbines, and other available machinery.

Water and Wastewater Treatment

Flanges are extensively used in sewer systems and water treatment plants. They establish connections between, pumps, pipelines, and other equipment.

Specification of Flanges

Flanges	Specifications
Flanges Types	Slip-On, Weld Neck, Long Weld Neck, Threaded, Blind, Companion, Lap Joint
Class	150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS ASA 150, ASA 300, PN 6,10,16,25, 40,64,100,160 ETC. available with NACE MR 01-75
Size	1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000
Type	Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ), Lap-Joint Face (LJF), Large Male-Female (LMF), Small Male-Female (SMF), Large Tongue & Groove, Small Tongue, Groove
Grades
Stainless Steel	ASTM / ASME 201, 202, 301, 304, 304L, 310, 310S, 316L, 316TI, 317, 317L, 321, 347, 409, 409M, 409L, 410, 410S, 420, 430, 431, 441, 444, 446, 17.4PH, 904L
Super Duplex Steel	S32750
Duplex Steel	ASTM / ASME SA 790 UNS NO S 31803 , S 32205 , S 32550 , S 32750 , S 32760.
Carbon Steel	ASTM / ASME A 335 GRP 1 , P 5 , P 9 , P 11 , P 12 , P 22 , P 23 , P 91
Alloys Steel	ASTM / ASME A 691 GRP1 CR , 1 1/4 CR , 2 1/4 CR , 5 CR , 9CR , 91.
Nickel Alloys	Nickel Alloys 200, Nickel Alloys 201
Titanium	Grade 1, Grade 4, Grade 5(Ti 6Al-4V), Grade 6(Ti 5Al-2.5Sn), Grade 7, Grade 11, Grade 12, 8Ai-1Mo-1V, Grade 9(3Al-2.5V), 6Al-6V-25n, 6Al-2Sn-4Zr-2Mo, 6Al-7Nb, Grade 23(Ti 6AL-4V ELI), Grade 5 ELI
Inconel	Inconel 600, Inconel 601, Inconel 625, Inconel 625LCF, Inconel 686, Inconel 718, Inconel 800, Inconel 825, Inconel X-750 , Inconel 690, Inconel 602, Inconel 617, Inconel 925, Inconel A-289, Inconel AL-6XN, AL-904L
Hastelloy	Hastelloy C-22, Hastelloy C-276, Hastelloy C-2000, Hastelloy C-4, Hastelloy X, Hastelloy B, Hastelloy N, Hastelloy G
Molybdenum	ASTM / ASME A 182 GR F 5, F 9 , F 11 , F 12 , F 22 , F 91, ASTM B387, Ferro Molybdenum
Cobalt	Cobalt HS-6, Cobalt HS-4, Cobalt HS-25, Sterlite Grade 1, Sterlite Grade 6, Sterlite Grade 12, Sterlite Grade 21
Niobium	ASTM B394, R04200 R04210
Nimonic	Nimonic75, Nimonic80, Nimonic85, Nimonic90, Nimonic263, etc
Tungsten	W1 WAl1, W61, etc, Carbonite Tungsten, Copper Tungsten, Nickel Tungsten
Nichrome	Nichrome90, Nichrome80, Nichrome80A, Nichrome RW80, Nichrome75, etc
Magnesium	Magnesium AL017100, AL017140, AL017150, AL017160, AL017200, AL017210, AL017250, etc.
Tantalum	Tantalum - Grade 1.
Monel	Monel 400, Monel k500
MU-METAL	MU-METAL
Zirconium	Zirconium 702, Zirconium 705, Zirconium 705, Zirconium-2, Zirconium-4
Beryllium Copper	Alloy 25 UNSC17200
Aluminium	1050,1100, 2017, 7150, 7178, 7575, 2050, 7085, 2011 A92011, 2014A A92014, 2024 A92024, 2219, 5052 A95052, 5083 A95083, 5754, 6061 A96061 A86061, 6063, 6082 A96082, 7071 7020, 7050 A97050, 7075 A97075 A87075, 7175
Copper Alloys	C 11000, C 10200, C 12200, C 51100, C 51000, C 51900, C 52000, C 52100, C 74500, C 75700, C 75400, C 76400, C 77000, C 21000, C 22000, C 23000, C 24000, C 26000, C 26800, C 27000, C 27200, C 28000

Automotive Engine Flanges CNC Flange Custom Service CNC Turning

Types of Flange

Regardless of custom sizing or specifications, the fundamental design of most flanges falls under six common styles created to close, connect, cover, or support pipes and pipe systems.

These flange types include:
Slip-on Flanges - Available in both standard and reduced sizes and both ring and hub style, manufactured to dimensions that will slide over a pipe with a snug fit
Weld Neck Flanges - Available in standard and reduced sizes, manufactured to the inside diameter dimensions of a pipe for attachment via welding
Blind Flanges - Available to seal both pipes and vessels
Lap Joint Flanges - Available in a range of sizes to pair with stub end fittings for easy dismantling
Threaded Flanges - Engineered to fit pipes with external threads for weld-free fits
Socket-weld Flanges - Designed with a socket fit and top weld for ideal inner flow in pipe systems

Material of Flange Adapter

Type	Casing	Coating	Fasteners	Gasket
Type I	AISI 304/ DIN 1.4301		Alloy Steel, PTFE coated	EPDM/NBR/HNBR/Viton
Type II	AISI 304/ DIN 1.4301		AISI 316/ 316L	EPDM/NBR/HNBR/Viton
Type IV	AISI 316L/ DIN 1.4404		AISI 316/ 316L	EPDM/NBR/HNBR/Viton
Type V	High strengh steel	Rilsan/ PVC/ Epoxy/ Galvanized	Alloy Steel, PTFE coated	EPDM/NBR/HNBR/Viton
Type VI	High strengh steel	Rilsan/ PVC/ Epoxy/ Galvanized	AISI 316/ 316L	EPDM/NBR/HNBR/Viton

ISO-Certified Custom Process of Flange

Our ISO-Certified Custom Flange Manufacturing Process
Cutting
Setting & Welding
Machining
Grinding
Inspection
Dispatch

Raw Materials and Quality Assurance
Beginning with this process, the system controls the quality of all incoming materials as per the raw material test certificate of the material. Mild Steel Flanges (MS) are of premium quality that ensures high durability, strength and resistivity to varied non-supporting conditions. Also, checking in each size for chemical and physical properties of these materials at Government approved laboratory.

Precision Cutting Methods for Custom Flanges
Cutting services use a variety of cutting methods to fashion materials in to pre-defined shapes and sizes such as Laser Cutting for Precision
Miter Cutting for Accurate Shapes
Plasma Cutting for Versatility
Water Jet Cutting for Complex Designs

Setting & Welding
During the forming, forging, pressing and heating, the control system outlines in process checks and maintains a regular testing procedure. The characteristic checks involved in the welding process are:
Root Pass
Back Chip Grinding
D.P Check Radiography

Machining Excellence
A fully equipped machine shop consisting of first class quality of lathes , drilling machines, required jigs, fixtures and inspection instruments can be found. which produce the first grade quality of MS Flanges, Custom Flange Manufacturers, etc. Equally well equipped is the Fabrication Shop. A k – 400 MIG Welding set, Rectifier and Generator, an electrode over (300° C) and all other necessary tools and tackles required for fabrication. The characteristic checks include dimensional and surface finish.

Accurate Grinding for Superior Flange Finish
Grinding is the most accurate of all the processes and hence is carried out with great efficiency .Grinding machines use a wheel made from one of the manufactured abrasives, silicon carbide or aluminum oxide.

Inspection, Quality Control, and Third-Party Validation
All our manufacturing activities are generally carried out under third party inspection agencies such as Lloyds , Engineers India Ltd. , Nuclear Power Corporation , Project and Development India Ltd. , Bureau Veritas CQS, Bharat Heavy Electricals Physical/Chemical composition determination.

Efficient Dispatch and Reliable Delivery Services
The final process of dispatch is the most tedious of all , and heavy duty cranes are used for it. With the help of our extensive delivery chain we can ensure time critical deliveries at the behest of our esteemed clients. We are indeed privileged to be able to serve and live up to their expectations and occupy unparalleled position of Flange makers in Chennai.

FAQ

Q: What is flange process connection?

A: Flange connections are the second most popular joint within the piping facility after welding. Unlike Welding, flanges are a mechanical means of joining which is achieved by torquing effort and does not involve application of heat or chemical fillers.

Q: What is the process of casting a flange?

A: Cast Flange Production Method
The cast manufacturing method begins with molten metal that's poured into a mold to form the desired shape—in this case, a flange. After the liquid metal has hardened, the mold is opened and the casting is removed, then machined to the necessary dimensions and surface finish.

Q: What are flange standards?

A: A flange standard lays down the dimensions, surface finish, facing type, marking, material and technical specifications for flanges.

Q: What is the ASTM standard for flanges?

A: The astm a105 slip on flange is used in most applications and it can come in different pressure classes ranging from 150 through 1500 and pressure numbers ranging from PN6 through PN64.

Q: How to connect flanges?

A: Simply match the flange to the outer diameter of the pipe you intend to connect. Installation is slightly more technical as you'll need fillet weld both sides to secure the flange to the pipe.

Q: How many flanges are there?

A: 5 Standard & Special Shapes. A detailed review of the standard types of flanges used in piping (Welding Neck, Long Welding Neck, Slip-on, Socket weld, Lap Joint, Threaded, and Blind) as well as of some special types (Weldoflange/Nipoflange and Elboflange, Swivel, Expander/Reducer Flange, and Orifice type).

Q: What are the Standards for Stainless Steel Flanges?

A: Stainless steel flanges have the following standards in place: ISO, ANSI, ASME, DIN, JIS, and custom standards. Viraj Profile Private Limited adheres to ASME/ ANSI, EN, DIN, AFNOR, AWWA, GOST, BS, JIS, AS, MSS, SA, UNI and more. In the stainless steel flange segment, they have more than 50,000 SKUs in different shapes and sizes.

Q: What is the pressure rating of Stainless Steel flanges?

A: The pressure rating of stainless steel flanges vary on the level of pressure. It also depends on material grade, flange type, and design. The pressure rating is expressed in pounds per square inch (PSI) or in classes.

Q: Which flange can handle more pressure?

A: Weld neck flanges can handle pressure best. Pressure handling depends on construction, size, shape, gasket type and the overall design of the flange and therefore stainless steel flange manufacturer should adhere to suit the specific needs.

Q: Why does flange size matter?

A: The size of the flange matters because it impacts the overall performance and safety of the system. Flanges are used in a wide variety of industries, and they are used to connect pipes, valves, and other equipment.

We're well-known as one of the leading flange manufacturers and suppliers in China. Please feel free to wholesale high quality flange at competitive price from our factory. For more information, contact us now.

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Common Flange Manufacturing Methods

Material of Flange Adapter

ISO-Certified Custom Process of Flange

FAQ