Steel flange 76 mm galvanized RM Steelpres 393/000 is a significant part of pipelines, which belongs to the category of pipe fittings. Flanges are necessary for the installation of pipeline systems and can be used as an independent fastener or as part of flange connections.
Steel flanges are made of steel alloys, in strict accordance with the requirements for the features of operation and transportation of the working medium.
A steel flange is a disk or a flat ring equipped with special holes for fasteners that ensure a reliable and tight connection of products.
Any pipeline consists of pipes, valves, connecting elements and a control system. A flat flange (GOST 12820-80) is the most important part of the system, which ensures the simplicity and reliability of fastening pipeline parts to each other.
These parts are used to connect pipes to each other in series, as well as to connect and “tie in” any additional equipment.
Our flanges are high quality products that can be used in all climates, high pressures and temperatures. Parts supplied by our company show excellent performance under the most severe conditions, regardless of the type of transported substance (water, hot steam, oil, chemical components, oil, gas).
A flange is a flat part with holes, the essence of which is the connection of pipes. Holes are needed to insert bolts, studs and other fasteners into them, which will help fix the flange on the pipe. Accordingly, the dimensions of the flanges depend on the pipes with which they "cooperate", which means that the manufacturer can worry about the need for a flange in advance, and the latter can be included.
By design, the galvanized steel flange is identical to the steel one. It is distinguished only by the presence of a protective zinc coating. GOST 12820-80 regulates the dimensions of parts, requirements for the accuracy of their manufacture. By design, these are flat discs with a large central hole through which the working medium is supplied, and holes for fasteners. The galvanized steel flange is mounted in two stages. First, the first element is fixed on the pipe by welding. Then the second one is attached to it in a mirror image, and the two parts are tightly pulled together with bolts or studs with nuts.
Before choosing galvanized flanges GOST 12820-80, it is worth getting acquainted with their types.
Flat. They are used to connect all components to the pipe in order to ensure the normal operation of the line. Such products cannot be mounted when toxic, flammable and explosive substances are transferred through the system. To make it convenient to fit galvanized steel flanges onto the pipe, the diameter of the central hole is 2 mm larger than the outer diameter of the pipeline. The mounted element is scalded with a welded seam. A flat galvanized flange is used for pipes with a working pressure of 0.1-2.5 MPa; at a temperature of - 70°C - +300°C and a diameter of 10-1600 mm.
Collar. They are distinguished by the presence of a ring in the form of a skirt connecting the flange and the pipe, with fixation by a welded seam. Details are docked to the pipe, scalded. A flat galvanized collar flange is used on highways with medium and high pressure levels. Alloy steel is used for their manufacture. The diameters of the parts are 15-500 mm, on their plane there may be protrusions, grooves, spikes or depressions. During installation, the part can be put on the pipe and welded.
3. Deaf. Their main purpose is to muffle the highway without dismantling.
Choosing a flat galvanized flange GOST 12820-80 for a pipeline in our company, you will receive a durable product that can withstand the effects of a harmful environment and temperature fluctuations. In addition, the plus of the device is quick dismantling using a wrench. By mounting flat galvanized flanges, you can get additional sealing by installing sealing rings.
Scope of steel flat flanges
These parts are used to connect parts of the pipeline to each other, as well as to connect pipes to taps or equipment, as connecting parts of machines, tanks and nozzles of apparatus.
The scope of application is wide, ranging from networks of housing and communal services and the oil and gas industry to aircraft construction and the aerospace complex. Working environments for steel welded flat flanges are:
hot and cold water;
steam;
gas;
oil;
sewerage products;
air;
many types of acids and other aggressive liquids.
Conditional pass. It is designated as Du and is equivalent to the cross section (diameter) through which liquid or gas flows through the pipes.
Pressure (Ru). According to GOST, flat flanges are designed for a working pressure of 0.1-2.5 MPa, depending on the version. If the temperature for the same Ru rises, then the operating pressure becomes much lower. Ru is calculated according to GOST 356-80.
Operating temperature range. He is composedinfluences from -70 to +300 C.
The material from which the flange is made is also important, since it is he who gives the necessary properties for use in different environments and climatic zones. For the European temperate climate zone, connections made of low-carbon steel are suitable, for the northern regions - parts made of frost-resistant steel 09G2S, and for climates with high humidity, steel 12X18H10T is suitable. The most common flanges on the market are alloy steel, stainless steel, and carbon steel.
Benefits of Welded Steel Flat Flanges
Their main advantage is their affordable cost combined with the reliability and tightness of the connection they provide. The low price of a flange for 1 piece is achieved mainly due to the ease of production and the low material consumption of these parts. Due to this, such flanges are considered the most commonly used method of connecting pipelines.
Our catalog contains the following flat flange sizes:
with Du values from 15 to 600,
with Ru values 6, 10, 16 and 25.
Galvanized flat welded flanges are a round-shaped part machined from steel, designed to align drainage lines and pipelines.
Steel flanges made of various grades of structural steel alloys, used in non-aggressive media and high pressures, are welded to the pipe using two seams. Holes for mounting with bolts are drilled around the circumference of the product.
Due to the high strength of the flanges, they allow repeated assembly and disassembly without changing the characteristics; it is possible to replace the seals during dismantling to ensure the tightness of the system.
Flat welded flanges operate at system operating pressure up to 2.5 MPa or 25 atmospheres and nominal diameters from 10 to 800 mm. The change in mass occurs from 0.63 to 181 kg.
To give corrosion resistance and improve performance, the products are coated with a galvanized layer. Galvanization is produced by galvanization, which ensures maximum adhesion to the steel surface.
Welded flanges are made using centrifugal casting or using forgings and sheets.
Flat weld flanges are distinguished by:
resistance in a humid environment and to atmospheric precipitation;
high strength;
ease of processing by forging and cutting;
good impact resistance and ductility;
long period of use;
good weldability.
With the help of flanges, pipes are fastened to certain sections of pipelines and drainage systems in the manufacturing industry. Fastening occurs through the use of bolts with nuts.
In the manufacture of products, various low-alloy structural steel grades 20, 25 and low-carbon 09g2s are used.
Applications
Flanges are used to fasten pipes and main networks, in the presence of various working media: sewage, steam, various liquids, etc. The working temperature of the environment varies up to +300gr.
Excellent performance characteristics of products allow the use in various areas of industrial production and utilities:
in machines and units in the oil and gas industry;
housing and communal sphere;
machine tool industry, due to corrosion resistance;
at tight connection of pipelines;
in equipment operating in a humid environment;
various devices and equipment.
You can buy the Flange steel 76 mm galvanized RM Steelpres 393/000 from us at the best price in Ukraine. A wide range of products allows us to quickly and efficiently fulfill any order, helping to complete any construction work on time.
