during the heating and cooling process of cold drawn seamless tube, due to the inconsistent cooling rate and time of the surface layer and the core, a temperature difference is formed, causing volume expansion and uneven shrinkage to generate stress, that is, thermal stress. under the action of ther

seamless tubes are widely used in our lives, and there are more and more types of materials on the market. now everyone trusts galvanized seamless steel tubes. galvanized steel tubes are seamless steel tubes with better corrosion resistance. yes, it is welcomed by many consumers. next, we will intro

both hot-dip galvanizing and cold-dip galvanizing are zinc processing processes. hot-dip galvanizing is to melt zinc, while cold-dip galvanizing uses electrolysis. they are very different in production, but they are similar in finished product performance. how to distinguish between hot-dip galvaniz

with the development of industry, hot-dip galvanized products have been used in many fields. the advantage of hot-dip galvanized is that it has a long anti-corrosion period and can adapt to a wide range of environments. it has always been a very popular anti-corrosion treatment method. it is widely

due to the different materials, processing methods, specific parameters and performance of seamless pipes (smls), there will be great differences in their application fields. if you want to choose a suitable steel pipe, you must start from the actual demand, and you must also pay attention to the ba