不锈钢真空弯头区别于碳钢弯头的主要是材质的不同，其所含的化学成分会保持弯头表面长时间不会生锈，不会被腐蚀。按标准制作可化为：   90°不锈钢长半径弯头：

1.以制造标准划分可分为国标、船标、电标、水标、美标、德标、日标、俄标等。　 　　

2.以制作方法划分可分为推制、压制、锻制、铸造等。

90°不锈钢真空弯头主要用于管道安装中的一种连接管件,用于管道拐弯处的连接。连接两根公称通径相同或者不同的管子，使管路作90°转弯。　　
通常是在碳钢基础上增加了高比例的Cr，Ni等合金而成，含量比例可达20%以上。常见钢种有：304，304L，321，316，316L，1Cr18Ni9Ti,0cr18ni9，前几种用数字表示的钢号为日本，美国钢号表示方法，zui后一种（1Cr18Ni9Ti）为国内钢号表示方法。 　　
不锈钢特性：强度，韧性指标是各种钢中的，其zui突出的优点是抗腐蚀，在化工造纸等腐蚀性较强的场合就必须使用不锈钢，当然，成本也是较高的！

The main difference between stainless steel vacuum elbow and carbon steel elbow is the difference in material. The chemical composition it contains will keep the surface of the elbow from rusting and corrosion for a long time. According to standard production, it can be transformed into: 90° stainless steel long radius elbow:

1. According to the manufacturing standard, it can be divided into national standard, ship standard, electric standard, water standard, American standard, German standard, Japanese standard, Russian standard, etc. .

2. According to the production method, it can be divided into pushing, pressing, forging, casting, etc.

90° stainless steel vacuum elbow is mainly used as a connecting pipe fitting in pipeline installation, which is used for the connection of pipeline bends. Connect two pipes with the same or different nominal diameters to make a 90° turn.

It is usually formed by adding a high proportion of Cr, Ni and other alloys on the basis of carbon steel, and the content ratio can reach more than 20%. Common steel grades are: 304, 304L, 321, 316, 316L, 1Cr18Ni9Ti, 0cr18ni9. The first several steel numbers represented by numbers are Japanese and American steel numbers, and the last one (1Cr18Ni9Ti) is the domestic steel number representation method. .

Characteristics of stainless steel: strength and toughness index are among all kinds of steel. Its most prominent advantage is corrosion resistance. Stainless steel must be used in highly corrosive occasions such as chemical papermaking. Of course, the cost is also high!

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