Loading… ASME B16.47 Large Diameter Steel Flange Standard In November of 1980, Subcommittee C of the American Society of Mechanical Engineers (ASME) B16 began work on the B16.47 Large Diameter Steel Flange Standard to standardize dimensions, tolerances, markings, and materials for Nominal Pipe Sizes 26” to 60”. Prior to this in July of 1952, MSS-SP44…
What is a Ring Type Joint (RTJ) Flange?
Ring Type Joint Flanges The Ring Type Joint or RTJ refers to the type of Gasket required for the Flange. The Ring Type Joint was designed for the Petroleum and Petrochemical industries where higher pressures and temperatures are present. The sealing surface is a high tolerance groove cut into the face of the Flange with…
What are Lap Joint Flanges?
A Stub end Flange or more commonly called Lap Joint Flanges are used with Stub Ends. A Stub End adapter slides thru the Flange and is welded to the pipe. The Lap Joint Flange is similar to the Slip On Flange except it is flat across the face and has a radius machined at the…
What is a Skirt Flange?
Skirt Flanges are just one of the Custom Engineered Pipe Flanges we produce here at Coastal Flange. A Skirt Flange is a Pipe Flange with a short piece of Pipe welded to it for use with cement lined pipe. The Skirt Flange is lined with a Cement-Mortar mix and is applied according to AWWA C…
What are the Types of Flange Gaskets?
In Piping Systems a Flange Gasket is placed between two connecting Flanges to create a leak proof seal. The three primary types of Flange Gaskets are Non-metallic, Semi metallic and Metal Gaskets. Photo Provided by Project Materials The Non-metallic Flange Gaskets are used in low pressure, low temperature and noncritical service applications. These are supplied…
What is an Orifice Flange?
The Orifice Flange is used to measure the flow of product through the piping system. When the Orifice Plate is installed there is a restriction of flow creating a differential pressure and this is used to measure the flow rate of liquids, steam or gases. The Orifice Plate is a thin plate with a center…
What is a Long Weld Neck Flange?
A Long Weld Neck Flange is an integral self-reinforcing Flange connection primarily for ASME Pressure Vessel applications. The Long Weld Neck (LWN) Flange was designed to be used in place of a Weld Neck Flange and piece of pipe for a bolt up connection to the vessel. This design reduced the stress on the neck…
What are the 6 most common flanges?
The following are the 6 types of flanges most common flanges in process piping systems. 1. Slip On As made obvious by their name, these pipe flanges slip over the pipe. They’re manufactured with an inside diameter that is slightly bigger than the pipe’s outside diameter. These attachments are connected to the pipe via fillet weld at…
The Weld Neck Flange vs Slip On Flange.
The Weld Neck Flange is easily recognizable by the hub that gradually tapers from the bolted connection to the pipe. At the Point of Weld on the Weld Neck it is supplied with a specific bore to mate with the attaching pipe or fitting. This connection is made with a full penetration butt weld, this…
What are Flanges
What are Flanges Pipe flanges are a mechanical compression connection using bolts and gaskets for quick assembly and disassembly. Flanges are used both for structural and process applications connecting pipe to pipe, to valves, pumps and numerous other types of equipment. Pipe flanges are manufactured to standard specifications as well as custom designs. The ANSI…