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A. Overview of China's steel number expression method
Steel number for short, is the name taken for each specific steel product, is a common language for people to understand the steel. China’s steel number, according to the national standard “Steel Product Grade Method” (GB221-79), using the hanyu pinyin letters, chemical element symbols and Arabic numerals combined method of expression. That is.
① The chemical elements in the steel number are expressed by international chemical symbols, such as Si, Mn, Cr ……, etc. Mixed rare earth elements with ” RE ” (or ” Xt “) said.
② product name, use, smelting and pouring methods, etc., generally using the abbreviated letters of Hanyu Pinyin, see table.
③ steel in the main chemical element content ( % ) using Arabic numerals.
Table: GB standard steel number used in the abbreviated letters and their meanings
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Zhishang Steel, specializing in domestic steel products trade, warehousing, processing and other services. The team has four service teams: Shandong Zhishang Steel Co., LTD., Shandong Zhiyiheng Trading Co., LTD., Tai 'an Zhishang Economic and Trade Co., LTD., Shandong Zhishang Steel Structure Co., LTD. Mainly engaged in steel coil, coated, stee···