榴莲视频IOS下载_榴莲视频在线看_榴莲视频APP网站_黄片软件榴莲视频

Butt welding flange with the rapid development of domestic foreign minister pipeline construction, pipeline pressure test become an indispensable important link, in the before, during and after the test must be conducted for each section of the pipeline ball sweep line, generally for 4 ~ 5 times. Especially after the pressure test, pipeline inside water is very difficult to clean, cleaning the number will be more.

Flange of a butt welding flanges, widely used in machinery industry and the promotion, users get the praise and favor. Butt welding flange of the wide range of USES, use according to the characteristics of different, more than in the mild conditions of medium, such as suit low circulating water, the purification of compressed air, and it has the advantage of the price is cheaper.

Butt welding flange including many kinds of types and models.

's butt welding steel flange and pipe flange is used for welding, mainly use in welding technology, the use of good characteristics and performance, its structure is reasonable, the strength and stiffness is bigger, can withstand high temperature and high pressure curve and temperature fluctuation, and repeated the sealing is reliable, nominal pressure of 0.25 ~ 2.5 MPa butt welding flange with concave and convex type sealing surface.

Butt welding flange main application environment is appropriate, need to be determined according to the specific situation, to ensure the specific use of butt welding flange value and performance, withstand high temperature and high pressure. Butt welding flange is suitable for the nominal pressure of not more than 2.5 MPa steel pipe connection,

Butt welding flange sealing surface can be made into smooth type, concave and convex type and mortise type 3 kinds. Smooth type butt welding flanges are the biggest, the other two ways of butt welding flange in use is also common.