Special requirements and specifications for fire protection pipes

With the acceleration of urbanization and the continuous increase of high-rise buildings, fire prevention and control has attracted more and more attention from all walks of life. As one of the core components of the fire protection system, the material selection and installation specifications of fire protection pipes are directly related to the safety performance of the entire building. Among many materials, steel pipes have become one of the preferred materials in fire protection pipe systems due to their excellent strength, pressure resistance and processing adaptability. However, the steel pipes used in fire protection pipes are not ordinary water pipes. They need to meet a series of strict technical requirements and national standards.

Starting from the composition of the fire protection pipe system, this article will analyze in detail the special requirements, manufacturing standards and testing specifications required for fire protection steel pipes, and discuss its important role in engineering practice in combination with application examples.

Basic requirements for steel pipes in fire protection systems:

1. High pressure bearing capacity
The working pressure of fire protection pipes is usually between 1.6MPa and 2.5MPa, and some high-rise buildings even require higher pressures. Therefore, steel pipes must have sufficient pressure resistance and safety redundancy coefficient to maintain a stable structure under the impact of high-pressure water flow.

2. Strong corrosion resistance
Fire-fighting pipes are in a humid, closed environment or even a corrosive gas environment for a long time. Ordinary steel pipes are prone to corrosion and perforation, leading to water leakage, pressure loss and other problems. Therefore, fire-fighting steel pipes usually need to be treated with anti-corrosion, such as epoxy resin coating or galvanizing.

3. High connection reliability
To ensure smooth water flow in an emergency, the connection of the fire-fighting pipe must be firm and reliable, and no leakage or falling off should occur. Welding, groove connection, flange connection, etc. must meet the corresponding national construction specifications.

4. High temperature resistance and impact resistance
When a fire occurs, the ambient temperature rises rapidly, and the steel pipe must still maintain structural strength and connection stability at high temperatures. In addition, it may be impacted by external forces during the firefighting process, so the steel pipe is required to have a certain toughness and impact resistance.

Common types of fire-fighting steel pipes:

1. Hot-dip Galvanized Steel Pipe 
Features: Galvanized layer inside and outside, with good anti-corrosion performance.
Application: Suitable for wet systems and sprinkler systems on ordinary floors.

2. Seamless Steel Pipe
Features: no welds, high strength, strong pressure resistance, suitable for high-pressure systems.

Application: used for fire trunk pipelines in high-rise buildings and important facilities.

3. Epoxy Coated Steel Pipe
Features: the inner wall is coated with epoxy powder, with strong anti-corrosion ability and low friction coefficient.
Application: replace galvanized pipes, widely used in dry systems and corrosive environments.

Advantages: environmentally friendly and pollution-free, long service life.

Design specifications and standards for fire-fighting steel pipes:

1. "Architectural Design Fire Protection Code"
2. "Automatic Sprinkler Fire Extinguishing System Design Code"
3. "Fire Water Supply and Fire Hydrant System Technical Code"
4. "Building Water Supply and Drainage Design Code"

Construction and installation points:

1. Pipe inspection
2. Reasonable bracket design
3. Welding and connection process
4. System water pressure test

Common problems and countermeasures for fire-fighting steel pipes:

1. Corrosion leakage
2. Pipeline detachment or displacement
3. Pipeline burst

Future development trends:

1. More environmentally friendly anti-corrosion materials
2. High-strength lightweight steel
3. Intelligent detection and operation and maintenance

Conclusion:

The fire-fighting pipeline system is an "invisible" safety guarantee project, and the steel pipes used in it are the "visible" skeleton of the entire system. Only by selecting steel pipe products that meet the standards and have superior performance, combined with scientific and rigorous construction and maintenance, can the safety of people's lives and property be guaranteed at critical moments. Faced with increasingly complex application scenarios and higher safety requirements, the manufacturing and use specifications of fire-fighting steel pipes will continue to improve and evolve. As a manufacturer of fire-fighting seamless pipes, we should always adhere to the principle of quality first and safety first, and promote the continuous optimization and upgrading of steel pipe products in fire-fighting systems.

Read more: Quality requirements for fire-fighting pipe fittings