A lot of industrial pipe welding machine production line pipe to go through pickling processing, but is not all stainless steel industrial pipe need to go through pickling processing, this is not necessary, depends on the specific process requirements, generally high requirements of welded pipe is to go through pickling process.

For example, some structural industrial pipes do not need pickling. The conditions for using these industrial welded pipes are not so strict, but the requirements for the strength of welded pipes are very high. Another example is water pipes. Some water pipes have to go through pickling process, while others do not. Why? Strictly speaking, pipes used for fluid pipes have to go through pickling process to remove the residual impurities on the wall of welded pipes and form a passive film on the surface, which has a good promotion for improving the corrosion resistance of welded pipes. Pickling removes the surface impurities, Health standards have also been raised. Some water pipes have been pickled or not, mainly due to the consideration of environmental protection factors, many enterprises can not pass the EIA, so there is no way to carry out pickling operation, which must be carried out through bright annealing. However, strictly speaking, this kind of pipe is far from the sanitary standard of the pipe after pickling.

If conditions permit, the stainless steel pipe produced by the pipe welding machineindustrial pipe welding machine is better to be pickled. For example, petrochemical pipe must be pickled, otherwise it is difficult to meet the use requirements.

Key words: industrial pipe welding machine

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