The american national standards institute ansi calls for the use of an ansi flange to be used on specific applications. The type of flange to be used for a piping application depends, mainly, on the required strength for the flanged joint. It gives the highest level of joint integrity due to buttwelded with a pipe. Joining threaded pipes and fittings can be aided by teflon tape or pipe compound. Api 605 flanges are designated series b flanges in asme b16. Learn different types of pipe flanges used in piping. Incoloy 800 flanges pipe flanges refer to forged flanges manufactured to astm b564 according to the dimensional standards of asme b16.
Types of asmeansi flanges alloy pipe, tubes, ceramic. It also provides easy access for cleaning, inspection or modification. The dimensions for these flanges are covered by asme b16. For example, in a stainless steel pipe system, a carbon steel flange can be applied, because flange will not come in contact with the product in the pipe. Angle the pipe end slightly to the face of the gasket and tilt the pipe into the gasket to ease assembly. Welding neck flange welding neck flanges are easy to recognize at the long tapered hub, that goes gradually over to the wall thickness. Based on flange facing types, it can be further classified as. Pipe flanges are designed to give you added support, block off piping or enable extra attachments to any pipe in your facility. Flanges are used to connect pipes, tubes, hoses, and similar structures.
Basic knowledge of flange 01flange,forged flangehebei. Thus flanged wheels are wheels with a flange on one side to keep the wheels from. Hdpe pipes and fittings polyethylene piping systems. The same is done again but to the back end of the flange hub which fuses it to the outside of the. The ansi flange is a threepart flange consisting of one flat flange, one flange machined to take a rubber oring and the rubber oring. Drawing api 6a flanges in acornpipe later, when the dimension is known, you can bring up the drawing, press ctrl the middle of the flange, and enter the correct dimension. Flanges and fittings isokf flanges and fittings easy and reliable isokf flanges and fittings allow quick release and tight connections from 10 to 50 mm nominal diameters. Stainless steel flanges are highly resistant to corrosion and contain enough strength for your industrial piping plan.
There are two types of weld neck flanges, which are standard and long. The connection with the pipe is done with 1 fillet weld, at the outside of the flange. Pocket guide to flanges, fittings, and piping data 3rd. Pdf mainly, this presentation covers the pipes and fittings of piping system.
These flanges are easy to use in fabricate applications as they are simply slipped over the pipe which needs to be connected and then a fillet weld is used to run around the end of the pipe to fuse the pipe to the inside of the bore of the flange. Where there is a need to join polyethylene pipe to pipe of another material or ancillary equipment such as valves and pumps then mechanical flanges may be used. There are many different types of fittings and they are the same in all. A pipe fitting may be defined as any type of pipe connector that is used to. Here is the latest edition of a compact reference that has been a real treasure for materials personnel for more than 15 years. Definition and details of flanges types of flanges. The engineer or designer must choose among several flange options. There are different types of pipe flanges used in the piping systems depending upon the fluid, pt rating, material of construction, connecting equipment etc. Section 8 flanges zhengzhou huitong pipe fittings co.
Click to print opens in new window click to share on facebook opens in new window click to share on twitter opens in new window click to. Blind flanges are also used as a manhole cover in the vessel. Attaching steel pipe to the cast iron flanges found on some valves and mechanical equipment always presents a problem because of the brittle nature of cast. Below you will find a short description and definition of each type, completed with an detailed image.
A gasket is a mechanical seal which fills the space between two or more mating surfaces, generally to prevent leakage from or into the joined objects while under compression. A is the same as the nominal outside diameter of the pipe connected to the flange. These types of flanges are used in high pressure and temperature application. The pipe flanges are the second most used joining method after welding. They provide not only a means of transition but a fully end load resistant joint that can also be disassembled for maintenance purposes. Here below you will find a short description and definition of each type, completed with an detailed image. Flanges are normally used to connect sections of pipe, valves, vessels or other fittings by forming a seal with either a ring or flat type gasket. A pipe flange is used in the assembly of pipe to pipe or other components like valves, tees, elbows etc. Welding neck flanges are easy to recognize at the long tapered hub, that goes gradually over to the wall thickness from a pipe or fitting. Use the pipe fitting tool to add flanges to a piping system.
Flanges are joined to each other by bolting and joined to the piping system by welding or threading. A wide variety of types of flanges options are available to you, such as ansi, iso, and asme. Thus flanged wheels are wheels with a flange on one side to keep the. Flange joint is an assembly of three different components. The lap joint flanges are used with stub ends when piping is of a costly material.
The flanges are created to match the pipes inside diameter or fitting. The 6 common types of flanges 2016 october 25 a flange is a collar or ring, usually holed for bolts, and welded or screwed at the end of the pipe or tube to allow objects to get attached to it. Made of makrolon, the macrovac series of flanges and fittings offer the following advantages. Pe pipe joining procedures plastics pipe institute. Alignment align the adjoining pipe center lines, and insert the larger pipe end into the gasket. The types of flanges for piping explained projectmaterials. Hdpe pipe pressure classes that can be made between pn4pn32 and the production of the desired diameter and size of hdpe pressure pipe system has undergone many tests in 1950, particularly in the carriage of drinking water. Pipe flanges a method of pipe joints and its classification.
Long weld neck flanges are used with vessel nozzles and equipment. Flanges imperial, metric, or ansi the flange or flange gasket is designed to fit between two sections of pipe that are flared in order to provide higher surface area. Flange types as already described before, the most used flange types acc. This video explain types of flanges commonly used in piping. Housings place the coupling housing halves over the gasket making sure the housing keys engage the grooves. Lap joint flanges have all the same common dimensions as any other flange. The flanges are bolted together, creating several lengths of pipes or other assemblies. A flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system.
High pressure steel flanges are essential to include in your next piping project. A wide variety of different types of flange options are available to you, such as ansi, iso, and asme. In the project browser, expand families pipes pipe types. The dimensions and weights of slipon flanges ansiasme are available on this page. With 2 flanges coupled together by a centering ring with a oring and a clamp fig. Before displaying flanges, you must specify the default flange type in the type properties dialog. Below are the types of flanges used in piping based on facing. Most common flange types welding neck flange welding neck flanges are easy to recognize. You will get a message about a change in pipe the flange dimensions, pipe cut length, plus any weld gaps add up to the overall dimension. There are many different flange standards to be found worldwide. Excellent roughing performance with low outgassing and excellent tightness resistance to chemicals high mechanical strength.
Flanges are used, alternatively to welded connections, to facilitate maintenance operations a flanged joint can be dismantled quickly and conveniently. Welding neck, slip on, socket weld, lap joint, threaded and blind flange. A flange is an external or internal ridge, or rim lip, for strength, as the flange of an iron beam such as an ibeam or a tbeam. Industry guidelines plastics industry pipe association. This article covers the types of pipe fittings and pipe connection techniques. Flanged joints are made by bolting together two flanges with a gasket between them to provide a seal. Lets now dive in, showing the key types of flanges with pictures. Their static strength is equal to slip on flanges, but their fatigue strength 50% greater than doublewelded slip on flanges. Pipe thread sealant is recommended for a leak tight seal. They are assembled with stud bolts, which when tightened, force the two flange faces towards each other on the gasket to form a pressure tight seal. Understanding pipe fittings types of pipe fittings, materials and. Blind socket weld lap joint bored slightly larger than the od of the pipe, the radius on the bottom matches the radius on the stub end.
Which are the most common types of flanges used in piping. They are produced in a variety of sizes, shapes and are categorized by their inside diameter and their outside diameter. Packed with pictures, definitions, and descriptions of ansi and api piping materials, such as flanges, fittings, bolts, gaskets, and required wrench sizes, it serves as an excellent guide for rookies and a ready reference for oldtimers alike. These types of flanges are used with another type of flange to isolate the piping system or to terminate the piping as an end. Here is a infographic depicting types of flanges for pipes used in process industry. Gasket material saves money by allowing less precise mating surfaces on machine parts which can use gasket material to fill irregularities. Socket weld flanges were initially developed for use on smallsize high pressure piping. In the project browser, open the view where you want to place the flange. Teflon tape is commonly used only for installation of the pipe fittings with male thread. A 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. Slip on flange the calculated strength from a slip on flange under internal pressure is of the order of twothirds that of welding neck flanges, and their life under fatigue is about onethird that of the.
The stub ends will be buttwelded to the piping and the flanges are kept loose over the same. Pipe flanges are used at places where piping, instruments, valves, equipment etc. Ansi flanges find the best stainless steel pipe fittings. This flange type will be welded to a pipe or fitting with a single full penetration. Heres a look at the most common flange types available. Introduction to square flanges introduction to flanges. In this channel you will learn about piping, piping components such as pipe, fittings, flanges, gaskets and many other topics. Critical dimensions of elbows and other fittings can be obtained from standard. Additional decisions involve facing and surface finishes, and the appropriate. It is slipped over the pipe and a stub end is welded onto the pipe. Hdpe pipe, polyethylene pe pipe are sorted by strength classified according to the intensity of the earlier technological developments.
912 80 887 1041 1434 1423 24 1450 446 284 39 975 1501 1393 1329 1283 982 1506 1386 872 1335 353 1254 856 189 413 988 483 235 614 939 27 760 433 460 106 1357