Gas fittings that are used in the gas transmission pipelines to transfer the gas flow (gas piping or gas piping).
The fittings are mainly made of steel and according to the standard, they have a variety of manisman fittings and seamed fittings. .
Gas connections have different types, among the types of connections, gas elbow has the most consumption.
Electric welding is used to connect them to each other and to the pipelines. and they also have different thicknesses and materials.
Production of gas fittings is a multi-stage process, in the first stage of which Manneman pipe or seamless pipe should be produced suitable for each piece and its size.
Then the elbow is manufactured using the steel welding elbow production method.
There is a special production process for each piece.
Gas fittings are specifically designed for use with gases such as natural gas, propane or phosgene. These gases are often flammable and toxic. Gas pipe fittings have reverse thread. This means that the threads are cut in the opposite direction to other connections to prevent gas pipelines from connecting to air, water or vent pipelines. Common applications for gas pipe fittings include main gas lines, residential gas pipelines, propane tanks, medical uses, hazardous gas applications, and explosives.
Types of gas fittings
Gas pipe fittings are classified according to their type and function. Gas fittings connect pipes in different ways. Each of them has its own advantages and limitations.
The most used types of gas pipe fittings
Gas connections are part of the domestic or industrial plumbing system, which are used in cases of changing the route, branching, or changing the size of the pipe.
Connections according to the type of connection in the pipe system. Tensile or application are divided into three main types as follows: Butt weld connections (BW) whose dimensions and tolerance are according to the structure design standard according to ASME B16.9 and in Some items with low corrosion are based on MSS SP43.
Silent Weld (SW) connections that are produced in classes 3000-6000-9000 based on ASME B16.11 design standard. Silent weld joints are used in piping and piping systems in various industries as well as in high pressure fluid transmission lines. Industries such as oil and gas, petrochemical, medical, power plants and fire extinguishing systems, where pipes and connections need to withstand high pressure, are used. -3000 and 6000 are designed and defined based on ASME B16.11 standard. There are connections that are secured by screws. Threaded connections do not need to be welded to the pipe.
The main types of connections in the 10 most used cases are as follows:
90 degree elbow (LR)
90 degree elbow (SR)
45 elbow degree
180 degree elbow (LR)
180 degree elbow (SR)
Equal Tee
Reducing Tee
Concentric Reducer conversion )
Eccentric Reducer conversion
Cap