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shenzhen's sharp to share with you how to according to the performance of the steel telescopic hose, plastic hose expansion test discern the stand or fall, because the steel telescopic hose, plastic hose expansion of product quality is different, the price also is different, so the customer at the time of purchase how to distinguish the good or bad, how to know the product's performance more good? Under the test of equipment has the following several testing coefficient, the results show the stand or fall of product directly, and the quality of products of the enterprise.1, steel telescopic hose, plastic hose expansion flame retardant test: flame retardant test is also called the combustion test, under the same nylon flame retardant corrugated pipe wall thickness for carbon burning test, can according to its self extinguishing the flame retardant grade is determined by the time. 2, steel telescopic hose, plastic hose expansion stress cracking test: in the sample tube into account for 1% of the nominal capacity, temperature of 20 plus or minus 5 degrees reagent ( Containing surfactant TX - 10, namely ZhongJi phenyl vinyl ether 7% aqueous solution) , after sealing, placed in the 60 plus or minus 5 degrees environment after 72 h, check cracking 50% less than the number of input sample bellows. 3, steel telescopic hose, plastic hose expansion leakage test: the test tube into nominal capacity of the water seal, the cross on the ground, not leak, after 4 h around large diameter bellows sample tilt 45 degrees, not leak within 2 minutes. Or use items packing steel telescopic hose, plastic hose expansion into the water, filling the 0 to tube. 02 mpa air, check within 30 s without air bubbles in water, used in goods packing of large diameter pipe, should be in its sealing performance testing tube into the nominal capacity of the water, then on the ground rolling 20 m don't leak. Other such as they can withstand oil, acid and alkali resistant and uv test to affect the quality of the product itself is not particularly big, so there is no requirement is primarily to test the above a few key points.
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