flange face types

This standard specifies the flange types and their facings, dimensions, tolerances, threading, bolt sizes, flange face surface finish, marking, materials, pressure/ temperature ratings and flange masses. Flange facing types C, D, E, F, G and H are not used for PN 2,5 and PN 6.Flange facing types G and H are only used for PN 10 to PN 40.Requirements are valid for normal case, in special case you have to contact the technical department.Below you will find a short description and definition of each type, completed with an detailed image.Our team are highly trained and experienced in servicing and producing all types of steel supplies. The ASME B16.5 code requires that the flange face (raised face and flat face) has a specific roughness to ensure that this surface be compatible with the gasket and provide a high quality seal. Forged steel flat face flanges are often found 150# and 300# ratings. Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 1: Steel flanges Whether you've got a large construction project, or need parts for industrial machinery, our team of steel fabrication consultants will ensure that your project is provided with the parts you need, when you need them. Copyright © 2011 Sunny Steel Enterprise Ltd.  All Rights Reserved Flange types and dimensions are stamped on the outer edge of the flange. The two types of finish are “smooth” and “serrated.” Raised face forged steel flanges are machined to provide a “serrated concentric” groove, or a “serrated spiral” groove finish to the raised face of the flange. FACES DE JOINTS - FLANGE FACINGS TYPE A Face de joint plate Flat face TYPE B Face de joint surélevée Raised face TYPE C Emboîtement double mâle Tongue face TYPE D Emboîtement double femelle Groove face TYPE E Emboîtement mâle Male face TYPE F Emboîtement femelle Female face TYPE G Emboîtement femelle pour joint torique Female face for O-ring TYPE H … To find out more about our range of flange facing machines, download our flange facing machine buyers guide. Ring joint. We’ll identify the best tools for your: Raised face flange. Tongue-and-groove facings are standardized in both large and small types. This compression causes a tight, leak-proof seal on the connection.Mirage Machines can provide the right tools to provide high quality surface finish restoration for each of these types of flange face.

They provide the connections necessary to link pipelines with the nozzles on mechanical equipment or with adjoining pieces of pipline. Flange “finish” refers to the type of surface produced by matching the flange face, which contacts the gasket. Flange face finish. Recent Posts. Simply subscribe using the button below.are used on pump facings or on fiberglass flanges where the torqueThe most commonly used flange face, raised face flanges have a raised surface inside of the bolt circle. 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. Mirage Machines can provide the right tools to provide high quality surface finish restoration for each of these types of flange face. Raised face flange tools & tools for all flange face types. Subscribe here . The Tongue and Groove faces of this flanges must be matched.
It is important to take note of whether the raised face is included within dimensions charts when dealing with pipeline components as

Rather than using a gasket between connecting flanges, RTJs have a deep groove in a ring shared around the face. This standard specifies the flange types and their facings, dimensions, tolerances, threading, bolt sizes, flange face surface finish, marking, materials, pressure/ temperature ratings and flange masses. The most used types are:1.Raised Face (RF)2.Flat Face (FF)3.Ring-Type Joint (RTJ)4.Male-and-Female (M&F)5.Tongue-and-Groove (T&G) To find out more about our range of flange facing machines, 2018 Mirage Machines Limited - All Rights Reserved Mirage Machines Limited is registered in England2018 Mirage Machines Limited - All Rights Reserved Before you read on you may wish to subscribe to receive alerts when we post similar information. Flange Face Type ，With flange Face the form and implementation of the side of a flens are meant, where a sealing ring or gasket will be placed. Flange Facing: The finish of contact faces of pipe flanges and connecting end flanges of fittings shall be judges by visual comparison with Rastandards (See ANSI, ASME B46.1) and not by instruments having stylus tracers and electronic amplification, the finishes required are given below.Other finishes maybe furnished by agreement between user and manufacturer. This information should be checked on each pair of mating flanges prior to make-up to see that both have the same pressure rating and pipe wall thickness. This European standard specifies requirements for circular steel flanges in PN designations PN 2,5 to PN 400 and nominal sizes from DN 10 to DN 4000. While flanges themselves have different pound ratings to indicate the pressure and temperature ranges that they can work to, the actual flange faces themselves vary according to environment within which they will be used. They differ from male-and-female in that the inside diameters of … Flange faces have to be smooth enough to ensure a tight, leak-free seal for bolted flanges. Faces are the mating surface of a flange, nozzle or valve. In this groove sits a metal ring which is compressed when the connecting bolts on the flange are tightened. Flanges with 150# or 300# have a 1/16" raised face whereas 400# or more have 1/4". Categories.

Other information that will be stamped on the outer edge of the flange includes manufacturer, nominal size, pressure rating, face designation, wall … Flat face flange. A serrated finish, either concentric or spiral, is required with 30 to 55 grooves per inch and a resultant roughness between 125 and 500 micro inches.
It will come as no surprise that flat faces has a flat surface. Flat face flanges are used "Ring-type joints (RTJs) are considered to be the the most efficient flanges for use in pipeline design.

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