Piping system is a piping system composed of piping components and piping supports. Piping components are components used to connect or assemble piping, including steel pipes, pipe fittings, flanges, gaskets, fasteners, valves, and expansion joints, flexible joints, pressure-resistant hoses, water separators, filters, and separators, etc.; piping supports are the general name of piping installation parts and pay-off parts.
Among them, the installation is the load from the steel pipe or pipeline supporting parts to the bearing structure or equipment components, such as boom, spring support hanger, tilt rod support rod, saddle, pad, towing seat, hanging (support) lug, hanging clip, fastening clamp, and skirt type pipe seat.
The pipeline project consists of several pipeline systems. In the pipeline project, according to the different pipeline materials, the different mediums conveyed in the off, the different construction conditions and many other factors, through the threaded connection, flange connection, welding connection, socket connection and other connection methods, the steel pipe, pipe fittings, valves, etc. are connected to form a complete pipeline system.
There are many kinds of pipes used in pipeline engineering, which can be divided into metal pipes and non-metal pipes. Metal pipes can be divided into carbon steel pipes, alloy steel pipes, stainless steel pipes, cast iron pipes, non-ferrous metal pipes, etc., according to the different materials; according to the different manufacturing methods can be divided into seamless steel pipes, welded steel pipes. Non-metallic pipes can be divided into plastic pipes, glass steel pipes, ceramic pipes, etc.
Pipeline project used in the pipeline components of metal and non-metallic parts, specifications, grades vary, in order to enable them to be scientifically and rationally combined in the specifications, types and quality of a unified technical standard, the purpose is to unify the design, manufacture and supply of products to facilitate the production and use.
The so-called nominal diameter DN (also known as nominal diameter) is the common caliber of various steel pipes and pipe accessories. For most products, the nominal diameter is neither equal to the actual inner diameter, nor the outer diameter, but a name diameter, so the nominal diameter is also called the nominal diameter. No matter how large the outer diameter or inner diameter of the product is, the steel pipe can be connected with the same nominal diameter of the pipeline accessories. Nominal pressure PN is the design pressure given in relation to the mechanical strength of the pipeline components.
The pipeline is transported by a wide variety of media, parameters (pressure, temperature) complex, and its service objects and properties vary, so the design, construction and operation of the pipeline management should follow the corresponding standards and specifications. Classification of pipelines is beneficial to the design and construction of pipelines according to different requirements.
Classification according to the different properties
According to the nature of the project, pipeline engineering generally belongs to two major categories: industrial equipment installation and construction equipment installation.
In the industrial equipment installation project, the pipeline for production services become industrial pipeline, it is the construction equipment installation project, for life or to change the labor and health conditions and transport media of the heating and sanitation pipeline (or plumbing pipeline) constitutes a pipeline project, which can be divided into industrial pipeline directly for the production of products to transport a variety of material media process piping and production of auxiliary materials, indirectly for the production of auxiliary services pipeline.
In the construction equipment installation project, the pipeline is divided into water supply pipeline, drainage pipeline, fire pipeline, heating pipeline, gas pipeline and so on according to the transport medium and use function.
Grading by pressure
The pressure range of piping project conveying medium is very wide, from vacuum to hundreds of MPa. Industrial pipelines are graded by design pressure as the main parameter, and can be divided into vacuum pipelines, low pressure pipelines, high pressure pipelines and ultra-high pressure pipelines. Different levels of pipelines have different requirements for material inspection and installation construction.
|Level name||Design pressure P (MPA)|
|Low pressure pipeline||0≤P≤1.6|
|Medium pressure pipeline||1.6<P≤10|
|High pressure pipeline||10<P≤100|
|Ultra high pressure pipeline||P>0|
Note: working pressure ≥ 9Mpa, and the medium working temperature ≥ 500 ℃ steam pipeline can be upgraded to high-pressure pipeline, is the construction of equipment engineering pipeline is generally low-pressure pipeline.
Classification by medium temperature
Industrial pipeline conveying medium temperature varies greatly, according to the temperature of the medium can be divided into four categories.
|Level name||Medium operating temperature|
|Low pressure pipeline||<-40°C|
|Normal temperature pipeline||-40°C-120°C|
|Medium pressure pipeline||121°C-450°C|
|High temperature pipeline||>450°C|
Note: Pipelines belonging to construction equipment projects are generally room temperature pipelines
Classified by the nature of the medium
Vapor medium pipeline
Vapor medium refers to superheated steam, saturated steam, hot and cold water and other non-combustible inert media; compressed air, nitrogen, cooling gas and non-combustible liquids, these media do not have special requirements for the pipe, mainly according to the working pressure and working temperature to select materials to ensure that the pipe has sufficient mechanical strength and heat resistance stability.
Corrosive media pipes
Corrosive media are sulfuric acid, nitric acid, hydrochloric acid, caustic soda, sulfide, etc. These media require pipes with chemical stability of corrosion resistance. Usually according to the media on the material corrosion rate is different, according to the media is divided into three categories.
- ① bottom (weak) corrosive medium: the corrosion rate of the material does not exceed 0.1mm/year;
- ② corrosive media: the corrosion rate of the material is 0.1 ~ 1mm / year;
- ③ high (strong) corrosive media: the corrosion rate of the material more than 1mm / year.
The same medium on different materials corrosion rate is different, so its category will be decided by the pipe transported.
Chemical dangerous goods media pipeline
Chemical hazardous materials are toxic media (such as chlorine, potassium cyanide, ammonia, asphalt, coal tar, etc.), combustible and violent media (such as oil and gas, water gas, hydrogen, acetylene, methanol, etc.), and asphyxiating, irritating, corrosive, volatile media. In addition to ensuring adequate mechanical strength, the pipeline transporting such media should be well sealed and set up the necessary safety devices.
Easy to solidify, easy to precipitate media pipeline
Heavy oil, asphalt in the transmission process will produce solidification phenomenon, benzene, urea solution is easy to precipitate crystalline precipitates. Pipelines conveying such media should take appropriate measures to ensure the normal operation of the pipeline.
From oil and gas to mining, different sectors need piping solutions. Based on your requirements, professionals can provide you with piping systems. Proper piping installation and configurations are essential to get the desired result.
A pipe refers to a fiberglass, concrete, wood, plastic, and metal tube. The best piping solutions ensure the smooth flow of gases and liquids. Besides, the piping system comprises the interconnection of a number of pipes and related components.
According to the different types, materials and quantities of steel pipes actually needed in the project to make the purchase.
Pipe fittings are used for transportation, changing direction, branching from a main or reducing the size of a pipe line.
Different flanges have different prices, however, the price of stainless steel flanges is not a roaming price, with its production process, brand, etc. are very relevant, the price is different.
Valves are mechanical devices that control the flow and pressure of fluids in a hydraulic or air system. Valves are an important part of piping systems that carry liquids, gases, steam, sludge, etc.
Gasket solutions are critical for maintaining the integrity of mechanical systems and preventing leaks. By understanding the various gasket types, materials, manufacturing processes, and testing methods, engineers can select and implement the most appropriate gasket solution for their specific applications, ensuring optimal performance and reliability.
Fasteners are essential components used in a wide range of applications to secure or join two or more objects together. They play a crucial role in various industries, including automotive, aerospace, construction, and electronics. Fasteners solutions are designed to cater to different requirements, ensuring durability, efficiency, and reliability in the assembly process.