Type of flanges

type of flanges


Slip-On Flange

The flange is slipped over the pipe and then welded both inside and outside to provide sufficient Strength and prevent leakage. This flange is used in preference to weld necks by many users because of its lower cost and the fact that less accuracy is required when cutting pipe to length.

Blind Flanges

Blind Flanges Manufacturer in India. This is a flange without a bore and is used to shut off a piping system or vessel opening. It also permits Easy access to vessels or piping systems for inspection purposes. Blind flange can be supplied with or without hubs at the manufacturers option

Weld-Neck flange

This is designed to be joined to a piping system by buttwelding. It is relatively expensive because of Its long neck, but is preferred for high stress applications. The neck, or hub transmits stresses to the the base of the hub to the wall thickness at the butt weld, provide important reinforcement of the flange. The bore of the flange matches the bore of the pipe, reducing turbulence and erosion.

Threaded Flange

This is similar to a slip-on flange in outline, but the bore is threaded, thus enabling assembly without welding. This obviously limits its application to relatively low pressure piping systems. The flange may be welded around the joint after assembly, but this is not considered a satisfactory method of increasing its applications.

Socket Weld Flanges

This is similar to a slip-on flange in outline, but the bore is counter-bored to accept pipe. The diameter of the remaining bore is the same as the inside diameter of the pipe. The flange is attached to the pipe by a fillet weld around the hub of the flange.

Spectacle Flanges

This is a pressure retaining plate with one solid end and one open end connected with a web or tie-bar. In normal operation, the open end forms the seal between two flanges and permits normal flow of fluid through pipe work.

Lap-Joint Flanges

This is again similar to a slip-on flange, but it has a radius at the intersection of the bore and the flange face to accommodate a lap stub end. The face on the stub end forms the gasket face on the flange. We are manufacturer of Lap-Joint Flanges in all sizes.

Orifice Flanges

The function of an orifice flange is to provide access to a line for metering of gases or liquids. An orifice plate is clamped between a pair of flanges when installed in a line and the whole assembly is refer to as an orifice flange union. Jack-screws within the assembly facilitate removal of the orifice plate.

Groove & Tongue Flanges

The Groove and Tongue faces of these flanges must be matched. One flange face has a raised ring (Tongue) machined onto the flange face while the mating flange has a matching depression (Groove) machined into it’s face.

Long Neck Flanges

Owing to our rich industrial experience, we are offering a comprehensive range of Long Weld Neck Flanges. The professionals of our organization source these neck flanges from trusted vendors. These flanges are unique due to their simple connectivity with other pipes. 

Flat Face Flanges

The Flat Face (FF) flange has a gasket surface in the same  plane as the bolting circle face. Flat face flanges are never to be bolted to a raised face flange. ASME B31.1 says that when connecting flat face cast iron flanges to carbon steel flanges, the raised face on the carbon steel flange must be removed, and that a full face gasket is required. 

Raised Face Flanges

The Raised Face (RF) type is the most applied flange face, and is easily to identify. It is referred to as a raised face because the gasket surfaces are raised above the bolting circle face.

Forged Flanges

Forged flanges are used as a connection component for pipes, valves, pumps and other equipment to form a pipework system. They provide easy access for cleaning, inspection, modification or repairs. Flanges are usually welded onto pipes or screwed onto a threaded pipe end and then joined with bolts to make the connection.

Pipe Flanges

A pipe flange is a forged or cast ring of steel designed to connect sections of pipe or join pipe to a pressure Vessel, pump or any other integral flanges assembly. Flanges are joined to each other by bolting and joined to the piping system by welding or threading.

SS 304/L 316/L Blind Flanges

Designation: A 182 / A 240, SA 182 / SA 240. Dynamic Forge & Fittings (I) P. Limited  is one of Leading Stainless Steel 304L Flanges Manufacturer, Suppliers & Stockist in India.

SS304/L 316/L Welding Neck Flanges

Dynamic Forge & Fittings (I) P. Limited  is one of Leading Stainless Steel 316L Welding Neck Flanges Manufacturer, Suppliers & Stockist in India. This SS 316L Flange is made up of stainless steel and follows international quality standards. 

Dummy Flange

Dynamic Forge & Fittings (I) P. Limited  is one of Leading has been a professionally managed Manufacturing & Exporters of Dummy Flanges India, Dummy Flanges Suppliers India, Dummy Flanges manufacturers India, Dummy Flanges Stockist India, Dummy Flanges supplies India, Dummy Flanges exporters India, Brass Dummy Flanges India, Alloy Steel Dummy Flanges India, Carbon steel Dummy Flanges India, titanium Dummy Flanges India, Dummy Flanges LBS 150, Dummy Flanges LBS 300, Dummy Flanges LBS 600, Dummy Flanges LBS 1500 Manufacturer, Suppliers & Stockist in India

SS 304/L 316/L Socket Weld Flanges

Dynamic Forge & Fittings (I) P. Limited  is one of Leading Stainless Steel 304/L 316/L Socket Weld Flanges Manufacturer, Suppliers & Stockist in India

SS 304/L 316/L Threaded Flanges

Dynamic Forge & Fittings (I) P. Limited  is one of Leading Stainless Steel 304/L 316/L Threaded Flanges Manufacturer, Suppliers & Stockist in India

SS 304/L 316/L Lap Joint Flanges

Dynamic Forge & Fittings (I) P. Limited  is one of Leading Stainless Steel 304/L 316/L Lap Joint Flanges Manufacturer, Suppliers & Stockist in India

Welded Flanges

The Industry Leader in Carbon Steel Weld Flange and Stainless Steel Weld Flanges,
Class: PN6, PN10, PN16, PN25, PN40, PN64. 150#, 300#, 600#, 900#, 1500#, 2500#.
Specification: Stainless Steel —> A 182 / A 240, SA 182 / SA 240
Carbon Steel —> ASTM A105, ASME A105
ASTM A266 GR.1, GR.2, GR.3, GR.4
ASTM A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2
ASTM A694 F42, F46, F48, F50, F52, F56, F60, F65, F70
Alloy steel —> ASTM / ASME A182 F1 / F5 / F9 / F11 / F22 / F91

Plate Flange

ASME/ ANSI B16.5 Plate Flanges (SLIP-ON) MANUFACTURER IN INDIA, THREADED FORGED FLANGES AVAILABLE IN CARBON, ALLOY, STAINLESS STEEL, MANUFACTURING Plate Flanges (SLIP-ON) IN ALL SIZE. A plate flange  is a flat, circular disk that is welded onto the end of a pipe and allows it to be bolted to another pipe. Typically used in fuel and water pipelines, the two flange plates will be bolted together with a gasket in between them. The flange plate will have bolt holes all around the perimeter and will be used to create junctions, tees and joints.

Screwed Flanges

Threaded Flange manufacturer: Dynamic Forge & Fittings (I) P. Limited supplies screwed flange, th forged Flange, threaded Flanges in forged steel, Stainless Steel, carbon steel etc.

Reducing Flanges

Yes, we manufacture & sell reducing flanges (WN, SW, SO, Thrd) with the hubs or made from blinds (in the cases of SO or Thrd). B16.5 gives rules for how we do the reductions

DIN Flanges

Presenting our range of precisely engineered DIN flanges which is manufactured in compliance with international quality standards. 

ANSI Flanges

Flange dimensions are determined by the pipe size and the pressure class required for the application. Flanges are standardized according publications from organizations like ASME, MSS, API and others. ASME/ANSI B16.5 provides. weld neck.

Forged Steel Flanges

Dynamic Forge & Fittings (I) P. Limited supplies a wide range of quality industrial forged steelpressure flanges and fittings including slip-on flanges, socket weld flanges, blind flanges, dummy flange etc.

Metal Flanges

Dynamic Forge & Fittings (I) P. Limited is a leading Stainless Steel Flanges manufacturers, Stainless Steel Flanges suppliers, Stainless Steel Flanges producers, Stainless Steel Flanges exporters

Reducing Couplings

A coupling (or coupler) (used in piping or plumbing) is a very short length of pipe or tube, with a socket at one or both ends that allows two pipes or tubes to be joined, welded (steel), brazed or soldered (copper, brass etc.) together.

Long Weld Neck Flanges

Get best price here of Long Weld Neck Standard Connection Flanges, flanges, flange, industrial flanges, industrial flange, industrial pipe flanges, industrial fittings, industrial pipe, industrial carbon steel, industrial blind, industrial blinds, industrial, industrial waterworks, industrial stainless steel, industrial steel, industrial weld, industrial forgings, industrial orifice, industrial slip, industrial steel flange, industrial steel flanges, industrial titanium flange, industrial titanium flanges, Long Weld Neck Flanges, Long Weld Neck “LWN”

Ring Joint Flanges

RTJ flanges have grooves cut into their faces which accept steel Ring Gaskets. RTJ flanges seal when tightened bolts compress the gasket between the flanges into the grooves, deforming (or "Coining") the gasket to make Intimate Contact inside the grooves, creating a metal to metal seal. Ring Joint Flanges Facing Dimensions. Nominal. Pipe. Size. Pitch Diam. of Ring and. Groove. 

Welding Flanges

We manufacturing Welding Flanges ANSI B16.5 flanges from 1/2″ through 24″ in classes 150, 300, 400, 600, 900, 1500 and 2500

ASME Flange

Pipe flanges that are made to standards called out by ASME B16.5 or ASME B16.47 are typically made from forged materials and have machined surfaces. B16.5 refers to nominal pipe sizes (NPS) from ½" to 24". B16.47 covers NPSs from 26" to 60". Each specification further delineates flanges into pressure classes: 150, 300, 400, 600, 900, 1500 and 2500 for B16.5, and B16.47 delineates its flanges into pressure classes 75, 150, 300, 400, 600, 900.

Steel Lap Joint Flanges

Dynamic Forge & Fittings (I) P. Limited is a leading manufacturer of high quality carbon/alloy steel and stainless steel lap joint flanges in India. Lap joint flanges are used in conjunction.

ASTM Flanges

Dynamic Forge & Fittings (I) P. Limited holds a large stock of ASTM/ASME flanges in various types of stainless steels. Our program of stainless ASTM/ASME flanges covers the following materials. Flanges, forged, ASTM A182, F304/304L or F316/316L (dual marked and certified), ASME B16.5, annealed and fully machined.

PN Flanges

Designed for reliable performance, our range of PN flanges are available in various sizes and results in long lasting performance. 

Puddle Flanges

Are you looking for Puddle Flanges manufacturers, Puddle Flanges suppliers, Puddle Flangesproducers, Puddle Flanges exporters, Puddle Flanges production centers, contact us to buy Puddle Flanges at best price

Butt Weld Pipe Flange

Dynamic Forge & Fittings (I) P. Limited offers a large stock range of stainless and duplex steel butt welding, pipe fittings, stainless fittings and flanges Tubular products Fittings Butt weld fittings, ANSI/ASME flanges

Round Flange

Looking for Round Flange manufacturers, Round Flange suppliers, Round Flangeproducers, Round Flange exporters, Round Flange production centers, choose Dynamic Forge & Fittings (I) P. Limited -DNV, IBR approved manufacturer in Mumbai, India

Cast Flanges

Looking for Cast Flanges manufacturers, Cast Flanges suppliers, Cast Flangesproducers, Cast Flanges exporters, Cast Flanges production centers, Cast Flanges? Choose Dynamic Forge & Fittings (I) P. Limited -DNV, IBR approved manufacturer in Mumbai, India

Split Flange

Our Split Flanges are the quality-oriented choice when safety and design integrity override “price” in the project spec., Extensive stock in all SAE J518 sizes up to 5" in Code 61, 2" in Code 62, Bare “SN” flanges sold as halves

Tube Flange

Dynamic Forge & Fittings (I) P. Limited produces flanges for use with pipe and tube in aluminum, steel, brass, copper, carbon steel, alloy steel, nickel, inconel, monel, hastelloy and stainless steel

PTFE Lined Reducing Flange

Our PTFE lined steel straight-bore reducing flanges are used for connecting different size flanges of PTFE lined steel pipe.  The PTFElined ductile iron reducing flanges are constructed with the major holes as through holes in all sizes. If you are looking for PTFE Lined Reducing Flange manufacturers, PTFE Lined Reducing Flange suppliers, PTFE Lined Reducing Flange producers, PTFE Lined Reducing then Dynamic Forge & Fittings (I) P. Limited is your stop for all type flanges.

SO Flange

The SO flange usually has the MF that can press the gasket tightly. It applies to the high temperature pipe with small inner diameter. The welding performance of SO flange is a little bit better than SW flange.

Flange Connector

A flange connector is a device that allows the connection of many types of hoses and fittings onto a flanged pipeline. Typically manufactured from stainless or high-carbon steel, a flange connector is connected to a flanged pipe with bolts, and a gasket is sandwiched between the pipe flange and the connector. Common in manufacturing facilities, a flange connector is often used to allow a smaller and more manageable hose to be split off from a large feeder pipeline.

IBR Flanges

Dynamic Forge & Fittings (I) P. Limited are IBR Approved Flanges manufacturer in Mumbai, India. Find here IBR Flanges manufacturers, IBR Flanges suppliers, IBR Flanges producers,IBR Flanges exporters, IBR Flanges production centers, IBR Flanges

Flange Adaptor

Flange adaptors are often used to permit dismantling of valves in flanged pipe systems

Flange Assembly

Flange Assembly Flanges & Fittings Large-Flange ISO LF NW200.

Flanged Tees

Manufacturer, exporter & suppliers of Reducing Tees Flanges & Fittings

Iron Flange

We also supply Cast Iron Closet Flange. Specialty Flanges.

Flange Accessories

Dynamic Forge & Fittings (I) P. Limited offers competitive pricing and added convenience on flange accessories like flange packs, gaskets, flange connector, and flange bolts, and many other flange accessories which are designed to meet or exceed SAE J518 and ISO 6162.

Orifice Flange Assembly

Orifice Plate alongwith Flanges in wide variety of materials for installation in 50 NW and above pipeline sizes are available. The use of the orifice flange assembly negates the requirement for further pipe drilling ensuring the quality of the tapping to ISO 5167-2 and minimizing the errors of the system. Although the weld beads and condition of the upstream piping should be considered when assessing the overall accuracy of the flow meter.

Flanged Pipe Fittings

Flanged pipe and fittings are typical components in rigid piping systems. Such systems are ANSI /AWA Standards particularly suited for above ground installation in the following: water filtration plants, sewage disposal plants, wastewater treatment plants, pumping stations and industrial plants, per AWWA C115/21.1

Socket Flange

Socket-weld pipe flanges are typically used on smaller sizes of high pressure pipes. These pipe flanges are attached by inserting the pipe into the socket end and applying fillet weld around the top. This allows for a smooth bore and better flow of the fluid or gas inside of the pipe. Slip on Pipe flanges with a hub have published specifications that range from 1/2" thru 24". Dynamic Forge & Fittings (I) P. Limited provides Socket Weld pipe flanges in all material grades, specifications and sizes.

Specifications covering the manufacture and dimensions of flanges:

Class: PN6, PN10, PN16, PN25, PN40, PN64. 150#, 300#, 600#, 900#, 1500#, 2500#.
Specification: Stainless Steel —> A 182 / A 240, SA 182 / SA 240
Carbon Steel —> ASTM A105, ASME A105
ASTM A266 GR.1, GR.2, GR.3, GR.4
ASTM A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2
ASTM A694 F42, F46, F48, F50, F52, F56, F60, F65, F70
Alloy steel —> ASTM / ASME A182 F1 / F5 / F9 / F11 / F22 / F91


ASTM specifications regulate approved raw materials for which flanges can be made and specifications .

For stainless flanges are:

ASTM A.182 – Forged or Rolled Alloy Steel Pipe Flanges & Fittings for high temperature service.


The standards govern the dimensions and tolerances to which fitting are manufactured:

  • ANSI B. 16.5 – Steel Pipe Flanges and Flanged Fittings (½ inch to 24 inch nominal diameter)
  • MSS SP.6 – Flange Facings
  • MSS SP.25 – Marking of flanges
  • MSS SP.39 – Bolts and Nuts for Flanges
  • MSS SP.44 – Large Diameter Pipeline Flanges. (Over 24 inch dia)
  • API-605 – Large Diameter Flanges for petroleum Usage. (Over 24 inch dia)

The ASME Code is not a standard as such but section VIII provides the procedure for calculating dimensions

For all pressurised vessels flanges.

The following are not flange specifications but they influence the manufacture of forged steel flange

  • ANSI B. 31.10 – Code for Pressure Piping
  • ANSI B. 31.3 – Petroleum Refinery Piping
  • ANSI B. 31.4 – Oil Transportation Piping
  • ANSI B. 31.5 – Refrigeration Piping Systems
  • ANSI B. 31.7 – Nuclear Power Piping
  • ANSI B. 31.8 – Gas Transmission and Distribution Piping systems
  • ANSI B. 36.10 – Standard for Wrought Steel pipe
  • ANSI B. 36.19 – Standard for Stainless Steel Pipe
  • ANSI B. 16.10 – Valve Dimensions Face & End
  • ANSI B. 16.11 – Forged Fittings Socket Weld & Threaded