Stainless steel (Stainless Steel) air, steam, water resistance and other weak corrosive media and acids, alkalis, salts and other chemical erosion corrosion of steel, also known as stainless and acid-resistant steels.
1, and nut is nut, and bolt or screw Rod twist in with used to up tight solid role of parts, all production manufacturing mechanical must with of a original. nut of type range, we common of has GB, British standard, beauty standard, day standard of nut. nut according to material of different, is divided into high strength, GB, pubiao, General several big type. to according to size different, thread ranging is divided into different of specifications.
2, nut is closely connected to the machinery and equipment parts, through the inside of the screw, and screw tightly together.
Stainless steel is a 60-year history of modern materials
The inventor of stainless steel is the 19th century United Kingdom metallurgical expert enjoying Li·buleierli