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concrete drop in anchors heat treatment operation process
(A), quenched and tempered steel:1, preheat treatment: normalizing -> the annealing (pearlite steel) -> high-temperature tempering (martensitic steel)(1), normalizing the object is a grain...
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Thread shooting nails usage
First, the drillingChoice of appropriate drill diameter (according to the thread size wire thread manufacturers will provide you with specific drill size) drilling, drilling depth is greater than the...
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