欧美性爱,中文字幕|东京热男人社区久久|青青视频 日韩在线|777其米第四色欧美|青青青久艹资源在线视频|成年男人的天堂明星 无码在线户外|精品乱人伦一女多男|www.sssav|无码调教在线播放|婷婷久久久久一区二区

News

News

Location: Home > News > News

How to represent the product brand?

Time:2016-06-02 18:49:15 Source:江西保太集團-江西保太有色金屬集團有限公司 View Rate:8540

Summary:
(1) Nomenclature The naming of non-ferrous metal and alloy product grades requires the use of Chinese pinyin letters or international element symbols as the subject code to indicate the category to which it belongs, such as L or AL for aluminum and T or Cu for copper. After the keyword, it is represented by the component number order in combination with the product category. That is, the code number after the subject word can indicate the state, characteristics or main components of the product, such as LF is aluminum (L) alloy for preventing (F) rust; LD is aluminum (L) alloy for forging (D); LY is hard (Y) Aluminum (L) alloy, the key words of these three alloys are aluminum alloy (L). For example, QSn is the main additive element in the green (Q) copper is tin (Sn); QAL9-4 is aluminum (Q) in the green (Q) copper, and the elemental aluminum added in the composition is 9%. The element is 4% and the subject of these two alloys is bronze (Q). Therefore, the product code is represented by a combination of the subject Chinese pinyin letters, chemical element symbols and Arabic numerals specified in the standard (GB340-78).
The state, processing method and feature code of non-ferrous metals and alloy products are indicated by the specified Chinese pinyin letters. Such as hot processing R (heat), quenched C (quenching), aluminum without B (not), fine particles X (fine) and so on. However, there are a few exceptions, such as high-quality surface O (image representation is perfect).