RTJ Ring Type Joint Flange

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RTJ Ring Type Joint Flange

Neelcon Steel Industries is a professionalsupplier, mainly engaging on manufacturing various RTJ Ring Type Joint Flange. We are the proud member of MASSMA that depicts our sound networking in the market and ability to grow profusely. Established in the year 1980, we Neelcon Steel Industries, are an eminent manufacturer, trader, distributor of wide range of RTJ Ring Type Joint Flange We also provide customized solutions to clients, as per their specific requirements. Our products are widly used by many industries. our well established infrastructure is equipped with highly advanced machinery and tools that enable us to manufacture a quality range of RTJ Ring Type Joint Flange. All activities are managed by efficient professionals who put in their core efforts to provide flawlessness in our range of RTJ Ring Type Joint Flange. You Can Get Best Price on RTJ Ring Type Joint Flange and timely delivery.

Definition and Details of Flanges - Flange Faces

Flange faces

Different types of flange faces are used as the contact surfaces to seat the sealing gasket material. ASME B16.5 and B16.47 define various types of flange facings, including the raised face, the large male and female facings which have identical dimensions to provide a relatively large contact area.

Other flange facings covered by these standards include the large and small tongue-and-groove facings, and the ring joint facing specifically for ring joint type metal gaskets.

Raised Face (RF)

The Raised Face flange is the most common type used in process plant applications, and is easily to identify. It is referred to as a raised face because the gasket surfaces are raised above the bolting circle face. This face type allows the use of a wide combination of gasket designs, including flat ring sheet types and metallic composites such as spiral wound and double jacketed types.

The purpose of a RF flange is to concentrate more pressure on a smaller gasket area and thereby increase the pressure containment capability of the joint. Diameter and height are in ASME B16.5 defined, by pressure class and diameter. Pressure rating of the flange determines the height of the raised face.

The typical flange face finish for ASME B16.5 RF flanges is 125 to 250in Ra (3 to 6m Ra).

Raised Face flange

Raised Face height

For the height measures H and B of all described dimensions of flanges on this website, with exception of the LapJoint flange, it is important to understand and remember the following:

In pressure classes 150 and 300, the height of raised face is approximately 1.6mm(1/16inch). In these two pressure classes, almost all suppliers of flanges, show in their catalog or brochure, the HandB dimensions including the raised face height. (Fig. 1)

Raised face height

In pressure classes 400, 600, 900, 1500 & 2500, the height of raised face is approximately 6.4mm(1/4inch). In these pressure classes, most suppliers show the HandB dimensions excluding the raised face height. (Fig. 2)

Flat Face (FF)

The Flat Face flange has a gasket surface in the same plane as the bolting circle face. Applications using flat face flanges are frequently those in which the mating flange or flanged fitting is made from a casting.

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. This is to keep the thin, bittle cast iron flange from being sprung into the gap caused by the raised face of the carbon steel flange.

Flat Face flange

Ring-Type Joint (RTJ)

The Ring Type Joint flanges are typically used in high pressure (Class 600 and higher rating) and/or high temperature services above 800F (427C). They have grooves cut into their faces which steel ring gaskets. The 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.

An RTJ flange may have a raised face with a ring groove machined into it. This raised face does not serve as any part of the sealing means. For RTJ flanges that seal with ring gaskets, the raised faces of the connected and tightened flanges may contact each other. In this case the compressed gasket will not bear additional load beyond the bolt tension, vibration and movement cannot further crush the gasket and lessen the connecting tension.

Ring Type Joint flange

Ring Type Joint gaskets

Ring Type Joint gaskets are metallic sealing rings, suitable for high-pressure and high-temperature applications. They are always applied to special, accompanying flanges which ensure good, reliable sealing with the correct choice of profiles and material.

Ring Type Joint gaskets are designed to seal by "initiallinecontact" or wedging action between the mating flange and the gasket. By applying pressure on the seal interface through bolt force, the "softer" metal of the gasket flows into the microfine structure of the harder flange material, and creating a very tight and efficient seal.

Ring Type Joint gaskets

Most applied type is styleRring that is manufactured in accordance with ASME B16.20 used with ASME B16.5 flanges, class 150 to 2500. Style "R" ring type joints are manufactured in both oval and octagonal configurations.

The octagonal cross section has a higher sealing efficiency than the oval and would be the preferred gasket. However, only the oval cross section can be used in the old type round bottom groove. The newer flat bottom groove design will accept either the oval or the octagonal cross section.

The sealing surfaces on the ring joint grooves must be smoothly finished to 63 Microinches and be free of objectionable ridges, tool or chatter marks. They seal by an initial line contact or a wedging action as the compressive forces are applied. The hardness of the ring should always be less than the hardness of the flanges.

Style R ring type joints are designed to seal pressure up to 6,250 psi in accordance with ASME B16.5 pressure ratings and up to 5,000 psi.

Tongue-and-Groove (T&G)

The Tongue and Groove faces of this 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.

Tongue-and-groove facings are standardized in both large and small types. They differ from male-and-female in that the inside diameters of the tongue-and-groove do not extend into the flange base, thus retaining the gasket on its inner and outer diameter. These are commonly found on pump covers and Valve Bonnets.

Tongue-and-groove joints also have an advantage in that they are self-aligning and act as a reservoir for the adhesive. The scarf joint keeps the axis of loading in line with the joint and does not require a major machining operation.

General flange faces such as the RTJ, T&G and the F&M shall never be bolted together. The reason for this is that the contact surfaces do not match and there is no gasket that has one type on one side and another type on the other side.

Tongue and Groove flange

Male-and-Female (M&F)

With this type the flanges also must be matched. One flange face has an area that extends beyond the normal flange face (Male). The other flange or mating flange has a matching depression (Female) machined into it's face.

The female face is 3/16-inch deep, the male face is1/4-inch high, and both are smooth finished. The outer diameter of the female face acts to locate and retain the gasket. Custom male and female facings are commonly found on the Heat Exchanger shell to channel and cover flanges.

Advantages and disadvantages ofT&GandM&Fflange faces

Better sealing properties, more precise location and exact compression af sealing material, utilization of other, more suitable sealing and spezialized sealing material (O-rings).

Commercial availabillity and cost. Normal raised faced is far more common and ready available both regarding Valves, flanges and sealing material. Another complexity is that some rigid rules must be applied to the piping design. Do you order Valves to be female end both sides, or on one side maybe, in which case do you point all male ends in the flow direction, or what. Same applies to any flanged joint / vessel connection of course.

Types Of Flanges

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RTJ Ring Type Joint Flange RTJ Ring Type Joint Flange RTJ Ring Type Joint Flange
RTJ Ring Type Joint Flange RTJ Ring Type Joint Flange RTJ Ring Type Joint Flange
RTJ Ring Type Joint Flange RTJ Ring Type Joint Flange RTJ Ring Type Joint Flange

The Petrochemical, Process, and Waterworks industries. ANSI, API, AWWA pipe flanges in carbon steel , stainless steel , alloys and chrome steel. Weld Neck, Slip on, Blind, Threaded, Socket Weld, Lap Joint, Orifice Flanges, Ring, and custom flanges in sizes 1/2" to 203". Pressure classes - 75, 125, 150, 175, 250, 300, 350, 400, 600, 900, 1500, 2500, 5K, 10K, 15K, 20K. High Yield - Low Temp.

Flange Standards
ANSI B16.28 Flange
ANSI B16.36 Flange
ANSI B16.47 Flange
ANSI B16.48 Flange
ANSI B16.5 Flange
ANSI B16.9 Flange
AWWA Standard Flange
AWWA C115 Flange
AWWA C207 Flange
AWWA Class D Flange
DIN Standard Flange
DIN 2501 Flange
DIN 2502 Flange
DIN 2533 Flange
DIN 2576 Flange
DIN 2605 Flange
DIN 2628 Flange
DIN 2629 Flange
DIN 2631 Flange
DIN 2632 Flange
DIN 2633 Flange
DIN 2634 Flange
DIN 2635 Flange
DIN 2636 Flange
DIN 2637 Flange
DIN 2638 Flange
DIN 2642 Flange
DIN 2656 Flange
DIN 2673 Flange
DIN 86029 Flange
DIN 86030 Flange
DIN 86041 Flange
DIN 86044 Flange
ASME Standard Flange
ASME A234 Flange
ASME B16.47 Flange
ASME B16.5 Flange
ASME B16.9 Flange
BS Standard Flange
BS 3293 Flange
BS 4504 Flange
BS 4505 Flange
GOST Standard Flange
GOST 12815 Flange
GOST 12820 Flange
GOST 12821 Flange
GOST 12822 Flange
EN Standard Flange
EN 1092 Flange
EN 1759 Flange
EN 1901 Flange
EN 1902 Flange
ISO Standard Flange
ISO 5211 Flange
ISO 6164 Flange
ISO 7005 Flange
JIS Standard Flange
JIS B2210 Flange
JIS B2212 Flange
JIS B2220 Flange
JIS B2238 Flange
JIS B2239 Flange
JIS B2311 Flange
JIS B2312 Flange
JIS B2313 Flange
MSS SP Standard Flange
MSS SP-44 Flange
HG Standard Flange
HG 20592 Flange
HG 20593 Flange
HG 20594 Flange
HG 20595 Flange
HG 20601 Flange
SABS Standard Flange
SABS 1123 Flange
UNI Standard

Flange Materials
Alloy Steel Flange
Aluminium Flange
ASTM A105 Flange
ASTM A126 Flange
ASTM A18226 Flange
ASTM A216 Flange
ASTM A217 Flange
ASTM A234 Flange
ASTM A285 Flange
ASTM A350 Flange
ASTM A351 Flange
ASTM A352 Flange
ASTM A515 Flange
ASTM A516 Flange
ASTM A536 Flange
ASTM A694 Flange
Carbon Steel Flange
Cast Iron Flange
Cast Steel Flange
Ductile Iron Flange
Forged Steel Flange
S235JR Flange
Stainless Steel16

Flange Pressure Flange
Class Rating Flange
1500LB Flange
150LB Flange
2500LB Flange
300LB Flange
400LB Flange
600LB Flange
800LB Flange
900LB Flange
Class D Flange
Nominal Pressure Flange
Nominal Pressure Flange
PN10 Flange
PN100 Flange
PN150 Flange
PN16 Flange
PN160 Flange
PN20 Flange
PN25 Flange
PN250 Flange
PN40 Flange
PN420 Flange
PN50 Flange

Flange Faces Flange
FF Flange
M&F Flange
RF44 Flange
RTJ Flange

Flange Surface Finish Flange
Black Flange
Galvanized Flange

Flanges Grades
CL1 Flanges
CL2 Flanges
CL3 Flanges
F1 Flanges
F11 Flanges
F12 Flanges
F2 Flanges
F22 Flanges
F304 Flanges
F304H Flanges
F304L Flanges
F310 Flanges
F310H Flanges
F310S Flanges
F316 Flanges
F316H Flanges
F316L Flanges
F317 Flanges
F317H Flanges
F317L Flanges
F321 Flanges
F321H Flanges
F321L Flanges
F347 Flanges
F347H Flanges
F42 Flanges
F44 Flanges
F46 Flanges
F48 Flanges
F5 Flanges
F50 Flanges
F52 Flanges
F56 Flanges
F6 Flanges
F60 Flanges
F65 Flanges
F70 Flanges
F9 Flanges
F91 Flanges
GP240GH Flanges
LF1 Flanges
LF2 Flanges
LF3 Flanges
S31254 Flanges

Flanges Schedules Flanges
Schedule 10 Flanges
Schedule 100 Flanges
Schedule 10S Flanges
Schedule 120 Flanges
Schedule 140 Flanges
Schedule 160 Flanges
Schedule 20 Flanges
Schedule 20S Flanges
Schedule 30 Flanges
Schedule 40 Flanges
Schedule 40S Flanges
Schedule 5 Flanges
Schedule 5S Flanges
Schedule 60 Flanges
Schedule 80 Flanges
Schedule 80S Flanges
Schedule STD Flanges
Schedule XS Flanges
Schedule XXS

Flanges Sizes
NPS Size Flanges
1 1/2 Inch Flanges
1 1/4 Inch Flanges
1 Inch Flanges
1/2 Inch Flanges
1/4 Inch Flanges
1/8 Inch Flanges
10 Inch Flanges
12 Inch Flanges
14 Inch Flanges
16 Inch Flanges
18 Inch Flanges
2 1/2 Inch Flanges
2 Inch Flanges
20 Inch Flanges
22 Inch Flanges
24 Inch Flanges
26 Inch Flanges
28 Inch Flanges
3 Inch Flanges
3/4 Inch Flanges
3/8 Inch Flanges
30 Inch Flanges
32 Inch Flanges
36 Inch Flanges
4 Inch Flanges
40 Inch Flanges
42 Inch Flanges
44 Inch Flanges
48 Inch Flanges
52 Inch Flanges
56 Inch Flanges
6 Inch Flanges
60 Inch Flanges
64 Inch Flanges
8 Inch Flanges
DN Size Flanges
DN10 Flanges
DN100 Flanges
DN1000 Flanges
DN1050 Flanges
DN1100 Flanges
DN1200 Flanges
DN1300 Flanges
DN1400 Flanges
DN15 Flanges
DN150 Flanges
DN1500 Flanges
DN1600 Flanges
DN20 Flanges
DN200 Flanges
DN2000 Flanges
DN25 Flanges
DN250 Flanges
DN300 Flanges
DN32 Flanges
DN350 Flanges
DN40 Flanges
DN400 Flanges
DN450 Flanges
DN50 Flanges
DN500 Flanges
DN550 Flanges
DN6 Flanges
DN600 Flanges
DN65 Flanges
DN650 Flanges
DN700 Flanges
DN750 Flanges
DN8 Flanges
DN80 Flanges
DN800 Flanges