FITTINGS
welded fittings
Welded fittings are classified into two categories: Butt Weld Fittings and Manisman Welded Fittings. The primary distinction between these fittings lies in their connection methods to the pipe. Welded joints are connected to the pipe through butt welding, while high-pressure joints can be either threaded and attached with screws or butt welded, with the pipe seated on a step and welding performed externally. Other differences between these connections also involve construction methods and materials.
Welded joints
Welded joints have a welded seam. During the construction of these joints, carbon steel, stainless steel, or any molten steel alloy is poured into two molds and then connected by electric welding to complete the construction. Alternatively, a sealed pipe can be used to make them. The presence of a welding seam in the head to the body of welded joints increases the possibility of their corrosion and damage by chemical fluids compared to seamless welded joints. This is especially true if the welding is not even clean. Fittings have several types depending on their function in piping systems, which will be explained in detail below:
90-degree seam welded elbow
A 90-degree elbow allows the flow to be changed by 90 degrees. This piece has two types, LR (Long Radius) and SR (Short Radius), and as mentioned, it is made from a seamed pipe.
45-degree seamed elbow
Like the 90-degree elbow, the 45-degree elbow also has the task of changing the flow path by 45 degrees. The 45-degree elbow is one of the most widely used fittings in the industry and like the 90-degree elbow, it has two types SR and LR.
Welded Equal Tee
The Welded Equal Tee, also known as an Equal Tee, is used to create a branch in a pipe. When there is a need to create a branch that is equal to the main pipe, a welded equal tee is used to connect three pipes together by welding.
Welded Unequal Tee
Unequal tee like equal tee is used as an interface for branching from the pipe and is widely used in the water and sewage industry and water supply pipelines. Unequal Tee is also known as Unequal Tee and Reducer Tee. The branch that branches off from the unequal tee is smaller than the diameter of the main pipe, and the presence of the word unequal in the name of this piece is also the reason.
Welded Reducer
One of the most widely used connections in the industry is the reducer. It is used to change the diameter of a pipe in a part of the pipeline, making it either smaller or larger. One side of the reducer has a larger diameter, matching the larger pipe, while the other side has a smaller diameter, matching the smaller pipe. There are two types of reducers: concentric and eccentric, each suitable for different situations.
FLANGE
Types of flanges
Weld Neck Flange
Weld Neck Flange is a type of flange with a conical neck connected to its center.
Blind flange
A blind flange is a disk used to block the passage of fluids at the end of the pipeline. Unlike other flanges, the blind flange does not have a section for the passage of fluids.
Socket Weld Flange
To connect the flange and the pipe, fillet welding is done from the outside after placing the pipe inside the silent weld flanges.
Threaded Flange
A threaded flange, also known as a screwed flange, has internal threads and is connected to the pipe with a screw.
Slip-On Flange
The slip-on flange is connected to the pipe by welding. To connect the pipe and slip-on flange, the pipe is first placed inside the flange and then fillet welded from the inside and outside to achieve better sealing.
Ring Type Joint Flange – RTJ
The Ring Type Joint (RTJ) flange is a type of flange that features a groove on its body. This groove or recess is located on the face of the flange, ensuring proper sealing at high temperatures and pressures.
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