The difference between hot-rolled seamless steel pipe and cold-rolled seamless steel pipeIn terms of processing technology: Hot rolling is hot processing, and cold drawing is cold processing. Hot rolling is rolling above the recrystallization temperature, and cold rolling is rolling below the recrys

1. Steel pipe piles need to be properly stackedThe stacking site is required to be flat to ensure that large vehicles can enter directly. For the low-lying area of the site, it is necessary to pave road slag or road wood under the supporting point for artificial reinforcement, and it is necessary to

1. Downhill forming methodDownslope shaping of welded pipe equipment can significantly reduce edge extension.2. Increase the intermediate extension of the billetDuring the forming process, the reduction of the hole pattern is increased, so that the gap between the upper and lower rolls is slightly s

After completing the purchase, the general buyer inspects and cleans the pipeline. The purpose of destruction is:1. Check the quality of pipeline products2. Clean the inside of the pipe3. Clear all events in the pipeline to react with the passing materialThe important part of pipeline cleaning, what