High press pipeline-Introduction of hex head bushing

　　Hex head bushing generally cut and forged by hexagonal rod processing, the use of thread types are many, it is connected to two different diameters of internal and external threaded pipe fittings, in the pipeline connection has an irreplaceable role.

　　Hex head bushing is also called the screwdriver head joint. Hex head bushing is a necessary tool for connecting the screwdriver head and the matching handle. Without the hex head bushing, the screwdriver head will not be used. The screwdriver joint is the same as the rotary sleeve, but only with the rotary head connector. The screwdriver sleeve is formed after the hex head bushing and the screwdriver head are combined, and the manufacturing cost of this configuration is lower than that of the screwdriver sleeve.

　　Classification:

　　1. There are many kinds of materials for making hexagon head bushing, which are generally divided into carbon steel, alloy steel and stainless steel.

　　2. by making methods, it can be divided into forged and casting.

　　3. the manufacturing standard can be divided into national standard, electric standard, water mark, American Standard, German standard, Japanese standard, etc.