what does the 7018 on a welding rod mean_3 32 rod

In China, the welding electrode industry thrives on a combination of advanced technology and significant investments in Research and Development (R&D). Companies here have adopted state-of-the-art manufacturing processes, ensuring that each electrode produced meets international standards such as AWS (American Welding Society) or ISO (International Standards Organization). This focus on quality assurance is not merely a marketing tactic but a deeply ingrained practice, as Chinese manufacturers aim to position themselves as leaders in the global market.