Because the Carbon steel butt welded fitting is easy to produce cold crack, hot crack and other defects during welding, it is necessary to take some special process measures to weld normally. 1. Welding method All kinds of arc welding methods can be used to weld medium carbon steel. Because medium carbon steel is mostly

September 10 this year is the 36th teachers’ day in China, which is an important festival for respecting teachers and valuing education. Organizing the teachers’ Day celebration in China novel coronavirus pneumonia, 2020, we will focus on the educational system, and thoroughly study and implement Xi Jinping’s new socialist ideology with Chinese characteristics, and continue

High-quality stainless steel flange must meet all aspects of accuracy requirements, only in this way can users be satisfied with the use, then what aspects of accuracy requirements should this product meet? First of all, the size specifications need to meet the accuracy requirements, because there are many specifications of this kind of product, different specifications will

In order to create greater economic value for our industrial production, we need the full use of mechanical products in the process of various industrial production, and when we carry out the transportation of solid liquid gas, we need to use stainless steel flanges to realize the gap connection of pipelines, which gives the method. Lan has

Welded steel pipe, also known as welded pipe, is a steel pipe made of steel plate or strip after curling and forming. Welded steel pipe has the advantages of simple production process, high production efficiency, more varieties and specifications, less equipment investment, but its general strength is lower than seamless steel pipe. Since the 1930s, with the

Qixi Festival, also known as Qiqiao Festival, Qijie Festival, daughter’s day, Qiqiao Festival, Qiniang Association, Qixi Festival, niuniuniupo day, Qiaoxi, is a traditional Chinese folk festival. Qixi Festival is derived from the worship of stars and stars. It is the birthday of Qijie in the traditional sense. It is called “Qijie Festival” because it is

Type discrimination of alloy steel flange. Different from ordinary 20 #, Q235 and other carbon steel flanges, it is mainly used for special characteristics of pipelines and pipelines, mostly for high temperature and high pressure positions. Its common materials are 12Cr1MoV, 15CrMo, P91, P22, 10CrMo910 and so on. The implementation standards include national standards, Ministry of Chemical

Forged pipe fitting — In the pipe manufacturing industry, the broad concept of “forging” refers to the use of pipes, sheets and forgings as raw materials, and its manufacturing methods include almost all the contents of the pipe forming process. When it comes to specific types (including all kinds of socket welding and threaded pipe fittings, brackets

There are many applications of different diameter pipe in our life, but there are many people who do not know it very well, do not know the type of forged pipe, do not know its use, these are to be known before use. Types of diameter steel pipe: 1. According to its curvature radius, it can

Flat welding flange and butt welding flange are common integral flanges of large flanges. Flat-welded flange has poor rigidity, which is suitable for pressure P < 4 MPa. Butt-welded flange is also called high neck flange, which has high rigidity and is suitable for high pressure and temperature occasions. There are three types of flange