Mannesmann pipe is a type of seamless steel pipe that is used in industry for installation in plumbing systems and facilities. Unlike other types of metal pipes and welded steel pipes, welding method is not used to produce mannesmann pipe. The production of these pipes is done in a special way in the factory. These steel pipes have wide applications in the field of oil, gas and petrochemicals
ASTM standard numbers A106 and A53 as well as API 5L oil and gas standard are used to make seamless metal pipe or Mannesmann pipe. The design of this pipe with different thickness requires special instructions that are included in the standards
In some production methods of these pipes, special heat treatment must be used. The choice of Manismann pipe production method is determined based on the regional needs and facilities of the manufacturer.
To produce a Mannesmann pipe, the steel ingot is heated to a certain temperature, and after reaching the required temperature, a certain pressure is applied to it by a cylinder, and the hot steel ingot forms a tube.
Technical specifications of Mannesmann pipe
Technical specifications of Mannesmann pipe include its length, diameter and size. Manisan pipe is very resistant to temperature changes and can withstand more pressure and impact than many other pipes.For this reason, this pipe is used in many industries and urban applications. This pipe is produced in sizes “1/2 to” 36 inches in factories. These pipes have special fittings for the Mannesmann pipe itself and with Welding on both sides of the knee is connected to the tube.
Types of applications of Manismann pipes
:Mannesmann pipes have a wide range of applications, the most important of which are
Mannesmann pipe for oil and gas lines
Mannesmann steel pipes for food and pharmaceutical industry lines
Mannesmann pipes for hydraulic lines
Mannesmann pipes for high pressure lines
A distinctive feature of Manismann pipes is its resistance to changing environmental conditions
Mannesmann pipe has the property of transporting fluid materials such as liquids or gases or semi-solid materials with the highest safety over long distances
This pipe has a long service life
Produced in various thicknesses from 20 up
This pipe is also used to transfer water
It is also used in shipbuilding, oilfield facilities and equipment and offshore platforms
Comparison of Mannesmann pipe with other industrial pipes
Mannesmann pipes, welded steel pipes and various types of metal pipes are designed for installation in special conditions such as high operating pressures. Of course, other industrial pipes such as polyethylene pipe and UPVC pipe (UPVC) can also be installed in normal pressure and high pressure, but in some cases at the discretion of engineers must be of a special type of pipe and fittings in piping systems. And facilities to be used.
Fit pipes, polyethylene pipes and PVC pipes are mostly suitable for water and sewage transfer in different networks. Industrial pipes, regardless of their applications, have very strong walls and can withstand changes in environmental conditions.
Mannesmann pipe alloy Category 40
Manisman 40 class pipe has no limitations in terms of alloy and can be made of stainless steel in accordance with alloying standards such as ASTM A312 and carbon steel in accordance with API 5L, ASTM A53, ASTM A106B standard
Steps of making steel pipes
.1
The molten steel is melted by iron ore and coke (a carbon-rich material that is produced if the coal is not heated if the air is not heated) in a furnace, and then by releasing oxygen into the liquid, more carbon is released. it destroys. The molten steel is then poured into large, thick-walled iron molds, where the ingots are cooled. In order to form flat products such as plates or long products such as rods, ingots are formed between large rollers under high pressure
.2
To create blooms, the ingot passes through a pair of grooved metal rollers in which it is collected. This type of roller is called a “two-story mill”. In some cases, three rollers are used. The rollers are mounted in such a way that their grooves are aligned with each other, and move in opposite directions. This compresses the steel and pulls it into narrower, longer pieces. When rollers are reversed by humans, the steel they make will be thinner and longer. This process is repeated until the steel reaches the desired shape. During this process, machines called manipulators turn the steel so that each side is processed evenly
.3
The impeller may rotate inside the plates in a process similar to the process of making blooms.
The steel passes through a pair of stacked rollers that extend it. However, there are rollers that are installed next to it to control the width of the sheets. When the steel gets the desired shape, the uneven end is cut off and the plates or slits are cut into shorter pieces
.4
Blooms are usually further processed before the tubes are made. Blossoms become clefts by placing more rolling equipment, which makes them longer and narrower. The ingots are cut by machines known as scissors. These are a pair of matching scissors that cut it. This allows efficient reducers to be reduced without interrupting the production process. These shovels accumulate and eventually become a seamless tube
.5
Works on sheets again. To create flexibility, they are first heated to 2200 degrees Fahrenheit. This causes an oxide coating to form on the surface of the sheet. This coating is broken with a scale breaker and high pressure water spray. The sheets are then sent through a series of rollers to the hot mill and thin, steel strips called skelp are made. This mill can be half a mile long. The thinner and longer the sheets pass through the rollers. In about three minutes, a board is transformed from a 6-inch (15.2 cm) thick piece of steel into a thin steel strip that can be a quarter of a mile long.
.6
After stretching, the steel is pickled. This process involves performing it through a series of tanks that contain sulfuric acid to clean the metal. To polish, it is washed with hot and cold water, dried, and then rotated on large spools and packed for transport to the pipe manufacturing site
.7
Skelp and billet are used to make pipes. Skelp is made in welded pipe. This time it is placed on the incinerator for the first time. Since the steel spool is wireless, it heats up. The steel is then passed through a series of grooved rollers. As it passes, the rollers twist the edges of the skelp. This forms a tube without welding
.8
The next steel passes by welding the electrodes. These devices break the two ends of the pipe. The welded joint passes through a high-pressure roller, which helps to create a strong weld. The tube is then cut to the desired length and stacked for further processing. Welded steel pipe is a continuous process and depending on the size of the pipe, it can be done at a speed of 1100 feet (335.3 meters) per minute
.9
If seamless pipe is needed, square surfaces are used for production. They are heated and molded to form a cylindrical shape, also called a round. Then we put the circle in a furnace in which it is heated. The heated circle rotates with high pressure. This high pressure roller stretches the surface and creates a hole in the center. Because the hole is irregularly shaped, a bullet point is pressed through the ingot as soon as it rotates. After the drilling step, the pipe may still have an irregular thickness and shape. To correct this, he goes through another series of rolling mills
.10
After making any type of pipe, they can be placed inside the straightening machine. They may also be fitted with fittings to connect two or more pipe pieces together.
The most common type of fittings for smaller diameter pipes are tight grooves that are cut at the end of the pipe. The tubes are also sent through a measuring device. This information, along with other quality control data, is automatically applied to the pipe. Then a protective oil is sprayed on the light coating tube.
Most pipes are normally processed to prevent rust. This is done by galvanizing it or coating it with zinc. Depending on the type of pipe used, other colors or coatings may be used.