Fire hydrant, disk hose, service life
Any kind of pipe work is carried out in the load and displacement under the condition of certain, keep constant load and displacement or rarely change, known as static working condition; when the load and displacement of continuous cycle alternating changes. In a circle in a dynamic state. Because of the two working conditions, the mode of damage or failure is different.
The rated service life of fire hydrants and disc hoses is the expected service life of the fire hydrant design.Fire hose disc hoses require no fatigue, damage, or failure during design life.
The fire hydrant hose even with high pressure hose to reach the general can reach tens of thousands of times to hundreds of thousands of times the load and displacement of continuous cyclic alternating dynamic cycle ", not to mention the fire hydrant hose, under normal circumstances, basically in a static state, so that the service life is long.As for how many years the fire hydrant disc hose can be used accurately, it depends on the material condition and the designed service life. Not all materials are the same. There is a definite number of years.
