Standards of hydraulic hose fittings
Agricultural firefighter hose is usually used in contemporary transportation and drainage work, which can be often seen in agriculture, industry, engineering and daily life. However, many brands of fire hose products in the market have different quality, so how to test whether the agricultural firefighter hose reaches the standard?
Fire hose must have its model and specification model and application scene, the model refers to its working pressure, the specification model has caliber and gram weight. Check whether fire hose reach the standard and product quality stand or fall should start from these several levels.
Whether does agricultural firefighter hose reach the standard how to test?
1. See whether the joint of the fire hose is regular, whether the work is rough, if the joint is rough and irregular, reflecting that the fire hose is inferior, can not be bought.
2. Touch the surface texture of the fire hose with your hands to see if it is brittle. If the surface texture of the fire hose is brittle and it will make a rattling sound when you beat it with your hands, it reflects that the product quality of the fire hose is poor.
3. The working pressure of folding blasting, after measuring the drainage pressure of seepage water, fold the sample from the middle, make the sample close together and fix it.
Raise the working pressure evenly to the required folding blasting working pressure, hold the pressure for about 5 seconds, and the sample cannot rupture. Boosting time is 30 ~ 60 seconds.
4. The water used in the seepage experiment is urban tap water. The temperature of water is 15 ~ 30℃.
5. Curve blasting working pressure. After measuring the drainage pressure of water seepage, bend the sample into an arc with an inner radius of 700 mm. The sample should be 1 fold edge in the outer arc. When the working pressure is raised to the required curved blasting working pressure evenly, the sample cannot break. Boosting time is 30 ~ 60 seconds.
6. Weighs out the sample weight per unit length. The ratio of the weight to the length of the sample is the weight per unit length of the fire hose. Test the product quality of fire hose and whether the standard, in addition to the above mentioned methods, but also to see its appearance certificate and production license, etc.
Work in losing drainage is one of the most disliked fire hose leakage burst, the many conditions because all fire hose problem caused by the product quality, therefore Choose the high quality agricultural firefighter hose can ensure that the work of high efficiency, stable accordingly everyone in order these products, or to pay attention to the above a few points.
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