Seamless / Welded Inconel 625 Pipe Beveled End Plain End Polish Surface
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Model Number:BE (Beveled End) PE (Plain End) Seamless / Welded pipe Inconel 625 Inconel Pipe
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BE (Beveled End) PE (Plain End) Seamless / Welded pipe Inconel 625 Inconel Pipe
1.Pipe End
Written by Matt Milbury on 16 January 2016. Posted in Pipe
A pipe end is the description of how the section of pipe ends. There are three main types of pipe ends: beveled, threaded or plain. Understanding pipe ends is important when designing a piping system since it would be inappropriate for the designer to specify a threaded connection for a large diameter pipe or to specify a welded end when connecting to a threaded component.
Bevel End
A bevel is a surface that is not at a right angle (perpendicular) to another surface. The standard angle on a pipe bevel is 37.5° but other non standard angles can be produced. Beveling of pipe or tubing is to prepare the ends for welding. However, it can also be used for deburring the cut ends for safety or aesthetic reasons. Bevel end is abbreviated on drawings as BE.
The beveling process is generally automated. This is because a pipe beveling machine can cut the bevel much faster than hand grinding, flame cutting or turning the pipe on a lathe. Further, the automated process ensures that there is an accurate and consistant pipe bevel each time. The automated process is much safer as operating personnel are not exposed to the same hazards as a person beveling the pipe.
This is the most commonly used end and is used on pipe, pipe nipples, and swage nipples.
Threaded End
Typically used on pipe 3" and smaller, threaded connections are referred to as screwed pipe. With tapered grooves cut into the ends of a run of pipe, screwed pipe and screwed fittings can easily be assembled without welding or other permanent means of attachment. In the United States, the standard pipe thread is National Pipe Thread (NPT). The reason for this is that as NPT connections are assembled, they become increasingly more difficult for the process to leak. The standard taper for NPT pipe is 3/4" for every foot. Threaded End is abbreviated on drawings as TE.
Threaded fittings have threads that are either male or female. Male threads are cut into the outside of a pipe or fitting, while female threads are cut into the inside of the fitting. As screwed pipe and fittings are assembled, two pieces are pulled together. The distance that is pulled together is called the thread engagement.
Plain End
A pain end pipe is a pipe that has been cut at 90° perpendicular to the pipe run. The reason pipe would be specified as plain end rather than beveled end is when the pipe will be used in a socket weld connection or for use with a slip-on flange.
Pipe End Abbreviations
Common abbreviations for the types of pipe ends are as follows. In general, these are used to describe pipe nipples on drawings.
Pipe End Drawing
2.PIPE LENGTH
The terms used to designate the length of steel pipes are:
- “SRL” (“single random length”): means that the pipe has any random size between 5-7 meters; generally, pipes below 2 inches in diameter are manufactured with SRL, i.e. shorter (or half measures) of larger bore pipes
- “DRL” (double random length): meaning that the pipe has any random size between 11-13 meters. Pipes above 2 inches in diameter are available in DRL size
- Cut Lengths: pipes are cut according to project specification. Custom sizes are used to save welding costs at the installation site.
The term “random” refers to the fact that the pipe mill can control that the pipe length is between a min-max value,
but cannot control the exact length of every single pipe (which will be variable, within the given range).
A double random length pipe has an expected length twice the length of an SRL pipe.
The term “random” refers to the fact that the pipe mill can control that the pipe length is between a min-max value, but cannot control the exact length of every single pipe (which will be variable, within the given range).
A double random length pipe has an expected length twice the length of an SRL pipe.
PIPE END TYPES
The term “pipe end” refers to how the pipe is finished at its extremities.
The common pipe end types are:
- Plain ends (PE): plain ends are generally used for smaller diameters and require slip-on flanges and socket weld fittings. Plain ends are also common for stainless, duplex and nickel-alloy pipes
- Beveled ends (BE): this is the most common pipe end type (beveled end pipes are joined by welding).
- Threaded ends (TE): threaded ends (which are generally NPT as per ASME B1.20.1 for petrochemical pipes) require threaded fittings and flanges and are used for smaller size pipelines or gas lines
- Threaded and coupled ends (T&C), generally used for gas distribution
- Grooved ends (example Victaulic pipes): these are pipes that allow a quick connection, used for non-critical applications
The image shows (left to right) plain, beveled, threaded and
grooved pipe ends.
Seamless / Welded Inconel 625 Pipe Beveled End Plain End Polish Surface
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