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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. An RTJ flange may have a raised face with a ring groove machined into it.
Pressure ratings – Class 150, Class 300, Class 600, Class 900, Class 1200, Class 1500, Class 2500, TABLE C, Table D, Table D, Table F, Table H, Table J, PN6, PN10, PN14, PN16, PN20, PN25, PN40 & AS PER Custom Drawings.
Socket-Weld Flanges has a female socket in which pipe is fitted. Fillet welding is done from outside on the pipe. Generally, it is used in small bore piping and only suitable for low pressure and temperature application.
Pressure ratings – Class 150, Class 300, Class 600, Class 900, Class 1200, Class 1500, Class 2500, TABLE C, Table D, Table D, Table F, Table H, Table J, PN6, PN10, PN14, PN16, PN20, PN25, PN40 & AS PER Custom Drawings.
Lap flange is having two components, a stub end, and a loose backing flange. Stub end is butt welded to the pipe and Backing flange freely move over the pipe. The backing flange can be of different material than stub material and normally of the carbon steel to save the cost. Lap flange is used where frequent dismantling is required, and space is constrained.
Pressure ratings – Class 150, Class 300, Class 600, Class 900, Class 1200, Class 1500, Class 2500, TABLE C, TABLE D, TABLE D, TABLE F, TABLE H, TABLE J, PN6, PN10, PN14, PN16, PN20, PN25, PN40 & AS PER CUSTOM DRAWINGS.
Orifice Flanges are used with orifice meters for the purpose of measuring the flow rate of either liquids or gases in the respective pipeline. Pairs of pressure "Tappings", mostly on 2 sides, directly opposite each other, are machined into the orifice flange.
Pressure ratings – Class 150, Class 300, Class 600, Class 900, Class 1200, Class 1500, Class 2500, TABLE C, Table D, Table D, Table F, Table H, Table J, PN6, PN10, PN14, PN16, PN20, PN25, PN40 & AS PER Custom Drawings.
Weld neck flange are most widely used flanged in process piping. It gives the highest level of joint integrity due to Butt-welded with a pipe. These types of flanges are used in high pressure and temperature application. Weld neck flanges are Bulky & costly with respect to other types of flange.
Pressure ratings – Class 150, Class 300, Class 600, Class 900, Class 1200, Class 1500, Class 2500, TABLE C, Table D, Table D, Table F, Table H, Table J, PN6, PN10, PN14, PN16, PN20, PN25, PN40 & AS PER Custom Drawings.
Material :Flanges are made from normalized forgings and are usually of two kinds of material, steel ST52.3 and stainless steel AISI SS316L.
Sizes :SAE Flanges come in two series, SAE code 61 (3000 series) and SAE code 62 (6000 series). For code 61 (3000# series), they are available in all nominal sizes between DN10 (3/8″) and DN125 (5″). For code 62 (6000# series), they are available in all nominal sizes between DN10 (3/8″) and DN80 (3″)
Working Pressure:The standard pressure ranges from 34 to 345 bar for code 61 (3000 series) and 200 to 414 bar for code 62 (6000 series). Please take note that the pressure information of the flange and connected equipment combinations may vary from each other. For example: if a pipe connected to the flange has a lower working pressure, it will result in an overall lower working pressure of the system. Therefore, please consider the lowest pressure as the maximum working pressure of this combination.
Temperature Range:The standard working pressure of carbon steel SAE flanges is between -40°C and +120°C. For stainless steel, the standard working pressure is between -60°C and +50°C. Working Pressure for SAE Flanges made from stainless steel and used at elevated temperatures have to be:
Spectacle blind flange cut to fit between two pipeflanges and usually sandwiched between two gaskets. A spectacle blind is often made from two metal discs that are attached to each other by a small section of steel. The shape is similar to a pair of glasses or “spectacles” – hence the name spectacle.
Pressure ratings – Class 150, Class 300, Class 600, Class 900, Class 1200, Class 1500, Class 2500, TABLE C, Table D, Table D, Table F, Table H, Table J, PN6, PN10, PN14, PN16, PN20, PN25, PN40 & AS PER Custom Drawings.
Slip-On flange has a hole with matching outside diameter of pipe from which pipe can pass. The flange is placed on pipe and fillet welded from both inside and outside. Slip-On Flange is suitable for low pressure and temperature application. This type of flange is available in large size also to connect big bore piping with storage tank nozzles. Normally, these flanges are of forged construction and are provided with the hub. Sometimes, these flanges are fabricated from plates and are not provided with the hub.
Pressure ratings – Class 150, Class 300, Class 600, Class 900, Class 1200, Class 1500, Class 2500, TABLE C, Table D, Table D, Table F, Table H, Table J, PN6, PN10, PN14, PN16, PN20, PN25, PN40 & AS PER Custom Drawings.
The blind flange is a blank disc with bolt hole. These types of flanges are used with another type of flange to isolate the piping system or to terminate the piping as an end. Blind flanges are also used as a manhole cover in the vessel.
Pressure ratings – Class 150, Class 300, Class 600, Class 900, Class 1200, Class 1500, Class 2500, TABLE C, Table D, Table D, Table F, Table H, Table J, PN6, PN10, PN14, PN16, PN20, PN25, PN40 & AS PER Custom Drawings.
Threaded Flanges are also known as screwed flange, and it is having a thread inside the flange bore which fits on the pipe with matching male thread on the pipe. This type of joint connection is Speedy and simple but not suitable for high presser and temperature applications. Threaded Flanges are mostly used in utility services such as air and water.
Pressure ratings – Class 150, Class 300, Class 600, Class 900, Class 1200, Class 1500, Class 2500, Table C, Table D, Table D, Table F, Table H, Table J, PN6, PN10, PN14, PN16, PN20, PN25, PN40 & AS PER Custom Drawings.
