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Types of Weldments Used to Join Piping

by Apr 10, 2018Welding

When it comes to joining pipes, complex assemblies, gas boxes and other components together, welding is one common method that manufacturers utilize. The weldments used will be based on the material of the pipes and tubes (such as metal vs. plastic), how the tube will be connected, and if there are any additional connections that must be made.

Axenics provides manual TIG welding, in addition to orbital welding capabilities. When performing TIG welding using high purity argon gas, there are several different types of weldments available for joints. Two common weldments requested by manufacturers include groove welded joints and fillet welded joints.

Groove Welded (Butt Welded) Joints

Groove welded joints, also called butt welds, are weldments that are commonly used when joining similar pipes together. They can also be used to join pipes to valves, fittings and flanges for a secure attachment. For piping of certain a thickness, the pipe may be cut at a sloping right angle before being welded. This technique is called creating a chamfered into the pipe.

These types of welds must be expertly performed to ensure that the weldment penetrates at the right level without leaving a hollow area where the pipe connection is weak. Another factor that must be taken into consideration is positioning the pipes in the correct location to prevent creating too much of a gap. If there is a wide gap between adjoining pipe ends, the weldment will have too much penetration.

Filleted Welded Joints

When it comes to arc welding, such as Tungsten Inert Gas (TIG) welding, fillet weldments are commonly used when connecting corner joints, tees and lap joints. Technicians do not have to prepare the edges, since the pipe ends will lie inside the joint itself that is used. Filleted weldments are usually more cost effective than grooved welded joints because the materials require less preparation.

Axenics’ Technicians are Expert Welders

At Axenics, welding is the core of how we got started and what we do. Our welders are specially trained to execute a variety of welding techniques to create the desired secure joint for our clients, based on their specifications. Three such welding techniques are freehand, autogenous, and cup walking. Freehand weld methods are suitable for small weldments or welds that may be in a different shape such as in a square or when it needs to be flat. Autogenous welding techniques are also used for small welds, and are desired when the pipes or joints are joined without using filler material. Cup walking is a preferred method for pipes that are larger in diameter so the weldments look consistent.

Getting Superior Weldments with a Component and Contract Manufacturer

Not every manufacturer has the welding expertise in-house to create superior weldments for a wide range of components, pipes and fittings. Training the existing staff in such methods can take time away from other operations. This problem can cost a manufacturer time, money, and a loss in productivity. In addition, the manufacturer may still not get the welds necessary for the materials as they may deal with leaks and breakage.

Using Axenics to perform welding services for a wide variety of components, pipes, simple assemblies and complex assemblies can help leverage your manufacturing processes. OEMs can save money and guarantee high-purity welding services for metal and plastic piping that will be implemented in their factory operations. In addition, Axenics provides manufacturers with custom specialty piping kits, which are comprised of a set of components that are are cut, welded and bent to specifications, all while meeting demanding deadlines. When these parts are delivered, the manufacturer’s workers can efficiently tie them into existing operations, or switch out defective or sunsetted assemblies and get production back to full capacity.

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