string' in 'context_BAR_stringThe epoxy resin coating center is reinforced welded steel pipe. Piwong wong structural iki supoyo perusahaan kanggo kalah dumadhi iki.Cold drawn square pipe Not only is it not easy to corrode in the face of various corrosive media, but also has a relatively stable expansion coefficient, so cold drawn square pipes are not easy to deform after use and can effectively extend the service life of the pipeline system.
