Pipes and tubes have to be fitted in different systems of various sizes. This implies that they require components, which can be utilized to facilitate this issue. Fittings help in making this possible. This allows them to influence the characteristics of the flow ranging from direction to pressure. These items are available in a wide range of sizes and shapes to be suitable for all types of applications.
What is Buttweld connection?
A butt-weld connection is one of the simple and versatile processes involved in joining several items. Generally produced from the hot and cold rolling process the items, are molded in the correct shape. The heat treatment process helps remove any residual stress to achieve good mechanical properties. This connection is formed by placing two pieces of metal facing them end-to-end and then welding them together. These ends are prepared by bevelling to make them similar to the pipe end. The modules are then butted and joined to the pipeline. They can be shaped in the form of elbows, tees, reducers, etc.
What is welded fitting?
A welded fitting is a component, which helps join different pieces of sheet metal together. A weld allows different components to be easily formed in a wide variety of shapes. They compliment and allow pipes and tubes to be welded within the system with ease. In some cases, the item has to be beveled so that a strong weld is attained and the entire system is leak-proof. The weld is very durable and reliable across various stress-induced systems. If they are processed further the product can attain excellent corrosion and oxidation resistance properties. These welded structures are less expensive compared to seamless items.
How are Buttweld fittings made?
These items are available in seamless and welded sections. The seamless components are produced without the requirement of welds or seams. The fittings are produced via cutting, heating, and shaping them in desired shapes. Welded structures consist of one or more welds depending on the pressure and dimension of the module. These components can be subjected to a cold-rolling process to give them extra protection against corrosion.
Are butt weld fittings seamless?
Yes, these fittings can be seamless. The components in this range are heat treated with billets and then shaped in different dimensions and shapes, as per the requirement. These items are generally more reliable and are less prone to failures and leakages. They are generally available in sizes lower than 12mm. The range of products in this range are slightly expensive due to the material used while producing them.
What is bw and its types?
BW is a common aberration for butt-weld. The different types of fittings in this range include
- Elbow- It facilitates the change of flow in the system.
- Tees- They are made with three openings designated to distribute the flow across 3 channels. These items can be availed as equal or reducing tees.
- Cap- It is generally mounted at the end of the system to close the line and protect it from corrosion.
- Coupling- Helps in joins two separate shafts together to transmit power.
- Nipple-These components are a short piece of pipe that has threads on both ends enabling it connects two other fittings.
- Stub ends- Comprising of two components these items are used to replace welded ans act as a backup.
- Reducers- These items help join pipes of different sizes together. They can be availed either as concentric and eccentric reducers.
What is ASME B16.25?
ASME B16.25 covers the preparation of ends of butt weld piping modules, which are designated to be joined via welding. The standards contain information about the welding and general scope, welded designs, and preparation of the internal diameter, along with related tolerances.
|Sizes||1/2" to 56"|
|ASTM Specification||ASTM A403, A234 WPB, A420, A860, A234 WP5 to WP92|