When there are pores in flange castings, the following process improvement measures are taken: 1. Change the sand mold brushing method The brushing method of sand mold coating is changed from overall spraying water-based coating to overall spraying water-based coating plus local manual brushing alcohol based coating. When painting by hand, paint alcohol based paint.

Stainless steel elbow originated in the 1980s, is a new industry. After more than 20 years of development and exploration, it has begun to take shape. Stainless steel elbow is a kind of pipe fittings, which is mainly made of stainless steel. With the development of economy, the application scope of stainless steel pipe fittings

1、 Wear resistance; Because the ball valve core of hard seal ball valve is alloy steel spray welding,and the sealing ring is alloy steel surfacing, so the hard sealed ball valve will not produce too much wear when opening and closing. 2、 Good sealing performance; As the sealing of hard sealed ball valve is manually ground, it can not

Ball valve came out in the 1950s. With the rapid development of science and technology and the continuous improvement of production process and product structure, it has rapidly developed into a main valve in just 40 years. In western industrial developed countries, the use of ball valves is increasing year by year. In China, ball valves are widely

High-pressure alloy steel flanges are connected to the tube or cylinder, the end of the head of a circle of discs, the disk evenly distributed several bolt holes, and the material is a high-pressure alloy, is the pipe or container for detachable connection when the most commonly used important parts. A certain nominal diameter of the container

Angle globe valve is a forced sealing valve, so when the valve is closed, pressure must be applied to the valve disc to force the sealing surface not to leak. When the medium enters valve VI from below the valve disc, the resistance to be overcome by the operating force is the friction force between the

Elbow materials include cast iron, stainless steel, alloy steel, malleable cast iron, carbon steel, non-ferrous metals and plastics. The connection methods with the pipe include: direct welding (commonly used) flange connection, hot-melt connection, electric fusion connection, threaded connection, socket connection, etc. According to the production process, it can be divided into: welding elbow, stamping elbow,

In the production of large Stainless Steel flanges, there are many factors that affect the performance of large flanges. Here are some common factors, First, annealing temperature (the annealing temperature is the temperature parameter when the primer and template are combined. When 50% of the primers and complementary sequences are double stranded DNA molecules, it is

Dual phase steel flange is also called flange plate or flange. Dual phase steel flange is a connecting part between shafts, which is used to connect pipe ends. It can also be used as the flange at the inlet and outlet of the equipment, and is used for the connection between two equipment, such as

Common things for flat welding flanges. The fixing form of the flange and the pipe is applicable to: the flange is sleeved at one end of the pipe, the inner and outer ports of the welding flange, the fixed flange, and the nominal pressure is 2 Below 5MPa.   Butt welding flange, also known as