Ball valve in the pipeline can cut off, adjust, distribute and change the flow direction of the medium. Ball valve has many advantages, is widely used in recent years, a new type of valve. Different functions of the ball valve often has a different sphere. Balls are usually divided into two kinds of soft seal ball and hard seal ball. Ball by function can be divided into: two-way ball, three ball, four ball, bend ball, floating ball, fixed ball, V-shaped ball, eccentric hemisphere, with handle ball, solid ball, hollow ball, etc. Customized for a variety of non-standard ball. Sphere blank forging, casting and coil welding. Provide materials are: A105,304,304 L, 316,316 L, 321, F55, F51, and so on.
Gypsum board is a kind of material made of building gypsum as the main raw material. It is a kind of building material with light weight, high strength, thin thickness, convenient processing, sound insulation, heat insulation and fire prevention. It is one of the new lightweight plates that are focused on development at present.