As you know, pipes and fittings are among the most important materials in the construction and equipping of building facilities. In the following, the information related to alloy, size, application, selection table, and the best purchase price of all types of pipes and fittings has been reviewed and presented.
Guide to selecting types of pipes and fittings
In general, pipes are responsible for transporting or maintaining a variety of fluids, whether liquids or gases with different densities. Some people think that the pipe should have a round appearance, but you should know that pipes are hexagonal and even square shapes. are produced, of course, it should be noted that this model of shapes is often seen in steel pipes.
According to their application, pipes are made of different materials such as steel, plastic, copper, cast iron, cement, PVC, etc.
All types of pipes and fittings
Steel pipes: Steel pipes are pipes that are made of steel and are widely used in various industries, especially for connections. Pipes that are made of steel and used in building facilities are mainly divided into three groups: galvanized pipes, black pipes, and Manisman pipes. All steel pipes can withstand high pressures and their operation is simple due to the long length of the branches (6 meters), but because they do not have an external cover, they are quickly corroded.
Galvanized pipes: Galvanized pipes, which are one of the most important types of steel pipes, have a silver color and are mainly used for hot and cold water piping in buildings. If the hot and cold water galvanized pipes are installed on top of the false ceiling or any other free space such as the duct of the building pipes and away from moisture with a layer of primer tape around the pipe or even black primer paint, it will have a very long life. they will be. Naturally, in order to prevent the corrosion of galvanized pipes that are installed and implemented under the tiles and joinery of buildings, inside the channels of the building floor, etc., the use of primer paint with even two layers of primer tape can guarantee the length Life and durability of galvanized pipes against corrosion. Obviously, the implementation of proper thermal insulation around all the hot water pipes will significantly reduce the heat losses of the hot water pipes. According to topic 16 of the National Building Regulations, galvanized steel piping, from a nominal diameter of 100 mm ("4") and above, the rib connection is no longer responsible and only flange connections should be used.
Review, selection, and price of hundreds of models of pipes and fittings on the reference and specialized website of Dematzheiz
Correspondence of nominal diameter and grade of pipes:
Black pipes: Black steel pipes, which are traditionally mainly used in the water piping of cooling and heating systems of buildings, are also suitable if they are installed away from moisture and inside the ducts and risers with two layers of stainless coating. Black pipes used in cooling and heating systems, after anti-rust paint and testing, must be completely isolated by suitable insulators to prevent heat loss.
Mannesmann pipes: These pipes, which are considered to be a type of seamless steel pipes, have the greatest thickness and strength of the body and the highest pressure tolerance and physical forces and are mainly used in gas piping of houses and apartments. These pipes are used only by using Manisman connections and in the form of welding, such as welding the sides of the knee to the pipe.
Cast iron pipes (ductile): These pipes are made of cast iron, and depending on their application, the types and amount of alloy, the shape and length of the pipe, and the type of connections are different, and they are often used in the sewage piping system. Cast iron pipes are mainly produced in two types (one-sided-double-sided) and two flat ends.
Plastic pipes: In general, the plastic pipes used in water and sewage facilities are:
PVC plastic pipes (PVC - abbreviation of polyvinyl chloride)
Plastic pipes (PE stands for polyethylene)
ABS plastic pipes (abbreviation of acrylonitrile, butadiene and styrene)
PP plastic pipes (abbreviation of polypropylene)
CPVC plastic pipes (abbreviation of chlorinated poly and nickel chloride)
PB plastic pipes (abbreviation of polybutylene)
PVC pipes can be called the most used pipes in this category. Among the advantages of using PVC pipes are a much easier and faster connection of the pipe and its connections compared to other pipes, no need for painting, lightweight and the ability to install in false ceilings, smaller external diameter, and chemical resistance. I have above mentioned. Disadvantages of PVC pipes are things like very high sensitivity to cold, loss of form and strength to heat, and low resistance to external shocks.
Dry-type PVC sewer pipes are produced in two types weak pressure in blue-gray color and strong pressure type in light gray color. Low-pressure PVC pipes are used in rainwater ventilation piping and connections for rainwater balconies and connecting pipes for sanitary facilities, but high-pressure PVC pipes are used in building sewage systems as vertical and collecting pipes, and The main sewage discharge pipe is used.
According to topic 16 of the National Building Regulations, the use of polyethylene pipes and fittings in sanitary sewage piping inside the building is allowed up to a maximum pipe diameter of 5 cm ("2"). or more, especially as a sewer riser in buildings is strictly prohibited)
Multi-layer pipes: The five-layer pipes are a smart combination of metal and polymer and an aluminum pipe with longitudinal ultrasonic welding forms the main body of Super Pipe. This metal layer provides resistance to pressure, heat, and oxygen penetration. Two layers of PEOC polymer and two layers of special glue make up the other components of these pipes, which has increased the life of these pipes to more than a hundred years in hard working conditions and at high pressure and temperature, even with a 2.5 times safety factor.
Buy pipes and fittings
Pipes and fittings are produced in various sizes and diameters according to their materials and applications, the outer diameter size of pipes is one of the essential parameters and characteristics that is directly related to durability and pressure. Therefore, in order to easily choose and buy pipes and fittings, you must first determine the required power and pressure. On the site of Damatajhiz HVAC Group, technical information of dozens of models of pipes and fittings, from reputable brands with original warranties, has been presented for you to enjoy the good feeling of optimal and smart shopping.
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The price of pipes and fittings
You can check all types of pipes and fittings at the best price for the best choice on the specialized website of Damatajhiz HVAC Group. Due to the difference in the prices of pipes and fittings in the market, it should be noted that the prices presented in the temperature equipment collection are up-to-date and the discounts desired by consumers have been included in these prices.
Calculation of the diameter of the pipes:
In order to calculate the diameter of hot and cold water pipes, you can use the diagram below.
You can also use the diagram below to calculate the diameter of steel pipes for heating and cooling systems.
Dear user:
While thanking you for your trust in the technical opinions of Damatajhiz HVAC sales experts, it should be noted that the buyer ultimately determines and selects the desired product brand based on history, brand strength, service, and product price. But in pipes and fittings, most users and buyers choose and buy best-selling brands according to their quality, price, and after-sales service.
If, after reading the above article, you have more questions about the purchase decision of the types of pipes and fittings you need, you can consult the heating equipment and engine room sales experts after contacting the temperature equipment collection and extension numbers 107-108-121-122. Take and ask your questions.
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In addition to a valid business license from the Heating and Air Conditioning Trade Association, Damatajhiz HVAC Group has an electronic trust symbol and started its store site in 2013 in the head office of Tehran.
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