In recent years, high density polyethylene (HDPE) pipelines have been widely used in municipal water supply, agricultural and forestry irrigation, sewage drainage, etc., and fire-fighting pipeline projects due to their superior performance characteristics.
Everyone knows that most of the outdoor buried fire-fighting pipes are galvanized steel pipes. However, with the vigorous popularization of PE pipes, they are gradually recognized by people and are more commonly used in the fire-fighting pipeline industry. When the working pressure of the fire-fighting water supply system is not greater than At 1.2MPa, the buried pipeline part needs to use PE water supply pipe with a nominal pressure of 1.25MPa or more.
So can PE pipes be used for outdoor fire pipes?
1. First of all, the choice of fire pipe material:
The material selection of outdoor fire-fighting water transmission and distribution pipelines should be based on the pipe diameter, internal pressure, external load, and the topography, geology, and supply of pipe materials in the pipeline laying area, in accordance with safe operation, durability, reduced leakage, convenient construction and maintenance, and economical and reasonable The principles of technology, economy, safety, etc. shall be comprehensively analyzed and determined.
2. Fire-fighting pipes are mainly divided into indoor and outdoor two types
Because steel pipes are easy to corrode underground and are inconvenient to operate, we urgently need a new type of pipeline that is corrosion-resistant, anti-aging, and can meet the requirements of fire-fighting pipelines.
The main material of PE pipe is high-density polyethylene (PE100, PE4710, PE100-RC), because of its good creep resistance, corrosion resistance, convenient installation and construction, flexibility, and can reach the kilogram pressure of fire water supply.
At present, PE pipes for firefighting are mainly used in outdoor fire-fighting pipelines. The selection of pipe materials is determined according to the length and pressure of the pipeline in the engineering design. Generally, PE pipes for firefighting do not pay much attention to sanitary indicators, mainly in terms of pressure, and the acceptance standards are general. It is 1.5 times the pressure rating of the pipe itself. The PE fire pipe supporting pipe fittings are also very complete, which can fully meet the construction requirements.