According to the specification, when the working pressure of the pipeline strength does not exceed 1.0mpa, the test pressure is 1.5 times the working pressure. If the working pressure of the pipeline exceeds 1.0mpa, the working pressure is +0.5mpa, but not less than 1.4mpa, and the stable pressure is 30min pressure. If the drop does not exceed 0.02mpa, it is qualified; the tightness test is under working pressure for 24 hours, and no leakage or leakage is qualified.
Introduction:
Fire-fighting pipeline refers to the pipeline material used for fire-fighting, connecting fire-fighting equipment and equipment, and transporting fire-fighting water, gas or other media. Due to special requirements, the thickness and material of fire-fighting pipes have special requirements, and red paint is sprayed to transport fire-fighting water.
concept:
Since the fire pipeline is often in a static state, the requirements for the pipeline are relatively strict. The pipeline needs to be resistant to pressure, corrosion and high temperature.
Classification:
Ductile water supply cast iron pipes, copper pipes, stainless steel pipes, alloy pipes and composite pipes, plastic pipes.
Installation process:
Installation preparation → main pipe installation → alarm valve installation → riser installation → spray layered main pipe, fire hydrant and branch pipe installation → water flow indicator, fire pump, high-level water tank, water pump combiner installation → pipeline pressure test → pipeline flushing → sprinkler head Branch pipe installation (system comprehensive pressure test and flushing) → throttling device installation → alarm valve accessories, fire hydrant accessories, sprinkler head installation → system water test
