There are many types of steel pipes and different uses, so their technical requirements are different and production methods are different.

　　Thick-walled seamless steel pipes are subject to high weather factors. The heavy rains brought by many days have brought about the continuous increase in the price of thick-walled seamless steel pipe industry. Today, according to statistical prices, the prices are relatively stable, and the profits of enterprises are relatively stable. However, there are many companies that have no profit to earn, and are in a wait-and-see state!

　The price difference of thick-walled steel pipes is very large, and there are different prices in different regions. At the same time, there is a relative balance between the prices of related alternative products and too large or too small, which will cause the market to adjust itself. According to the latest official statistics on July 1, the price difference of thick-walled steel pipes per ton is about 3,000 yuan.

27simn steel ingot is made of perforated or solid tube through the capillary, and then call is made hot-rolled, cold-rolled or cold.

When it is necessary to produce several shaped tubes, and the size of the strips used is allowed to be uniform (such as several kinds of hollow steel window tubes), only one set of forming rolls is needed , and then the rolls are changed on the shaping frame (the sizing frame of the round tube).

The steel plate is a flat steel with a wide aspect ratio and a large surface area. Steel plates are divided into two specifications according to their thickness: thin plate and thick plate.

Stainless steel welded pipe needs to be protected by nitrogen when welding. What is the principle of nitrogen-protected stainless steel welded pipe ?

In the exploration and development of petroleum companies, the processing quality of oil casing threads is directly related to the exploration and development benefits. This is mainly because the thread is the joint part, so it is the weakest link, so it is often the area with high accidents. In the process of oil casing thread processing, there are often quality defects of one kind or another. Based on this background, this paper analyzes the quality defects of oil casing thread processing in combination with its own working practice, and puts forward some points of view on strengthening the thread processing of oil casing.

Method of operation: After heating the steel to Ac3+30~50 degrees or Ac1+30~50 degrees or below Ac1 (you can refer to the relevant information), it will generally cool slowly with the furnace temperature.

Mainly used for general engineering structures and mechanical structures. Its representative material (brand): carbon steel 20, 45 steel; alloy steel Q345, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo and so on.

　　This week, the domestic seamless steel pipe market of No. 45 showed a steady upward trend.

After the stainless steel tube cold billet is heated, there is generally a temperature difference between the radial direction and the axial direction.

What is the type of line pipe tempering? According to the performance requirements of pipeline steel pipes, depending on the tempering temperature, tempering can be divided into the following types:

1. Introduction to seamless steel pipe The seamless steel pipe is a circular, square, rectangular steel with a hollow section and no seams around it. The seamless steel pipe is formed by perforating a steel ingot or a solid tube blank, and then hot rolled, cold rolled or cold drawn. The seamless steel pipe has a hollow section and is used as a pipe for conveying fluid. Compared with a solid steel such as round steel, the steel pipe has a lighter weight when it has the same bending and torsional strength, and is an economical section steel which is widely used for manufacturing structures. Parts and mechanical parts, such as steel scaffolding for oil drills.

An ISO 9001:2008 certified company, Victor Steel supplies a wide range of ASTM A312 TP 316L Stainless Steel Seamless Pipe to customers across world.Our focus is on providing customers with high end steels that are not rolled or stocked locally.

The invention provides a protective coating for oil pipes and wellheads and downhole equipment used in oil and gas drilling, oil recovery and transportation.

High-quality resources are tight and the price is high. Some mines have increased mine use, mine sales are better, traders are more active, and small and medium-sized mines are starting to improve slightly.

Q345 channel steel price market traditional sales season, and because of the "golden nine" market failure, the market will habitually think that the delay of the peak season, may eventually fall to October, so before the National Day, the market for " The Silver Ten” peak season still has high expectations, and after the steel price has been consolidated for more than a month, there are conditions for a rebound.

The steel market continued its rebound last week. In addition to the weak and weak market, other major varieties of construction steel continued to rise.

The application of galvanized flat steel has also expanded correspondingly with the development of industry and agriculture. Therefore, the enterprises engaged in the production of galvanized flat steel in China are also required to have higher requirements for the galvanized flat steel. It is also because of the high new reference price of galvanized flat steel, so the production and process requirements are also very high, so the application range and type of flat steel is also very rich. So what is the difference between galvanized flat steel and round steel?

Structural performance comparison of seamless steel tubes. Carbon structural steel pipe: This kind of structural steel pipe is generally smelted by converter or open hearth furnace. Its main raw material is molten iron and scrap steel. The content of sulfur and phosphorus in steel is higher than that of high quality carbon structural steel pipe. Generally, sulfur is ≤0.050% and phosphorus is ≤0.045%.