When the pipeline is initially laid, people may consider the terrain, or the direction of the pipeline. But again, in the process of using the pipeline, one of the most worrying things for people today is the leak. If there is a leak, it will bring a lot of problems. In order to solve this problem well, there is now a seamless steel pipe that allows people to worry about it anymore.

This week, the national galvanized pipe market is weakly consolidated, ranging from RMB 20-120/ton.

What are the main uses and advantages of hot-dip galvanized pipe? In order to improve the corrosion resistance of steel pipes, general steel pipes are galvanized. Most of the old houses use hot-dip galvanized pipes. Now the iron pipes for gas and heating are also hot-dip galvanized pipes, and hot-dip galvanized pipes are used as water pipes.

After using galvanized steel pipe, the life and use of the product can be guaranteed. One of the main things that is talked about today is to explain the storage method of galvanized steel pipe, and know that these storage methods will not cause any problems when they are used.

The continuous casting process includes horizontal continuous casting and curved continuous casting, solid continuous casting and hollow continuous casting. The application of the continuous casting blank simplifies the feeding condition of the extrusion, reduces the processing cost of the extruded bad material, and realizes the "short process" of the extrusion process .

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

　The domestic steel market has been in a price increase situation due to various factors, and its price is likely to continue to rise due to domestic environmental protection.

A105 is the American ASTM standard number, and A stands for ordinary carbon structural steel. Standard name: Carbon steel forgings for pipe parts. Because this standard only specifies a carbon steel forging, A105 is also a forging carbon steel grade.

　　China Broadcasting Network Beijing October 10 news The US Department of Commerce announced on the 7th to launch anti-dumping and countervailing duty investigations on seamless steel pipes imported from China. The previous day, the EU Council of Ministers decided on the 6th to impose a final anti-dumping duty of 17.7% to 39.2% on China's seamless steel pipes exported to Europe. Analysts believe that the US International Trade Commission will make a preliminary ruling around November 2, and once approved, China's seamless steel pipe may lose the world's largest export market. The United States once again set trade barriers to China. Where will the Sino-US trade dispute go? Mei Xinyu, an associate researcher at the Research Institute of the Ministry of Commerce, analyzed this.

　　With the advent of the era of global economy and the demand for high-quality seamless steel pipe products in the domestic market, promoting industrial technology upgrade has become an inevitable requirement of China's seamless steel pipe industry. In this context, some seamless steel pipe manufacturers have embarked on the road of transformation and upgrading. Among them, promoting the integration of seamless steel pipe industry and mobile Internet has become the hottest topic.

The development of seamless steel pipe industry is being further adjusted. As a seamless steel pipe is one of the most important types in the steel pipe industry. Many manufacturers are doing this industry, the competition is fierce, and it is also relatively hung. However, in recent years, the overcapacity and the stratum of the strip steel are undoubtedly a challenge for the seamless steel pipe industry, so that the seamless steel pipe industry can be better developed. In order to obtain a relatively good profit, the seamless steel pipe industry must constantly study supply and demand, and only when the supply and demand relationship is in a better state can it win profits. Another is the export work, to strengthen their own strength and ensure the quality of seamless steel pipes, so as to ensure the development and profitability of seamless steel pipe manufacturers.

China's seamless steel pipe exports in January-February were 13.17 million tons, down 25.7% year-on-year. The analysis believes that the reason for the decline in China's seamless steel pipe exports is that the expectation for the future domestic demand market continues to strengthen; second, the international market trade protectionism prevails and targets China. The Chinese government and large steel companies are consciously reducing conflicts by reducing exports. It is predicted that if this trend continues, China's seamless steel pipe exports will drop to around 80 million tons this year. From the numerical point of view, it will greatly alleviate the problem of oversupply in the world seamless steel pipe market.

Recently, the All-China Metallurgical Chamber of Commerce held a 2018 enterprise exchange meeting. Zhang Zhixiang, president of the All-China Metallurgical Chamber of Commerce, said that the operation of the seamless steel pipe industry is expected to remain stable in the fourth quarter . The basic balance of supply and demand of seamless steel pipes in 2018 has become the main tone.

1 Main production process of hot-rolled seamless steel pipe (main inspection process):

Due to overcapacity of No. 45 seamless steel pipe and low steel prices, the No. 45 seamless steel pipe industry has been deeply mired in profit. Today, the tight capital situation is spreading from steel traders to steel mills. Recently, a steel company in Jiangxi has been broken and the boss has run.

Since the beginning of this year, the steel industry has continued to deepen the supply-side structural reforms, strictly guard against the resurgence of “strip steel”, ensure that all high-polluting production capacity has withdrawn from the market, and strictly control new capacity according to environmental protection requirements, thereby promoting the overall development of the industry. Affected by the above macroeconomic policies, the price of Q345C steel pipes in thefirst half of the year remained at a high level in recent years, and the operating rate of blast furnaces in steel mills was relatively high.

　　On November 7, the China Iron and Steel Association said that in October, affected by the country's steady growth policy measures, the market is expected to rise, and the release of steel production capacity remains at a high level, driving demand for iron ore and rising prices. The post-market will soon enter the low season of Q345C seamless steel pipe consumption, steel output will decrease, iron ore demand intensity will decline, and prices will not continue to rise, will be slightly fluctuating.

The difference between the so-called stainless steel seamless steel pipe and the carbon steel seamless steel pipe mainly refers to the difference in design rules between stainless steel and carbon steel, that is to say, the design rules of the two steels are not universal. The differences between 27simn seamless tubes are summarized as follows:

  Heat treatment (or heat treatment) is a group of industrial and metal processing processes used to alter the physical properties of materials, sometimes chemical properties. Heat treatment of steel can be defined as the application of heat to change the properties or state of the steel. The heat can be measured by the temperature of the steel to be treated. The temperature can be cold or hot when touched, so the process temperature range can range from very cold to very hot. Alternatively, in terms of temperature, the range can be from cold negative temperature to hot addition temperature.

Carbon reduces the corrosion resistance, ductility, toughness and weldability of steel. This is due to the strong affinity of carbon and chromium, which can form a series of complex carbides with chromium. The higher the carbon content in the steel, the more chromium carbide is formed. As a result, the chromium content in the solid solution is reduced, and the corrosion resistance of the steel is also lowered. The higher the carbon content in the steel, the lower the corrosion resistance. For stainless steel bright rods, corrosion resistance is the main requirement, so the carbon content of stainless steel bright rods is generally low, most of them are only 0.10% - 0.20%, generally not more than 0.4%.

"In the face of a strong 'environmental storm', the steel industry must consolidate its goals, form a consensus, and unswervingly take energy-saving, emission-reduction and low-carbon development as a strategy and direction, and unswervingly take the road of energy conservation and emission reduction, each Enterprises must not hesitate to pass the environmental protection." This is the mobilization order issued by Zhang Changfu, vice president and secretary general of China Iron and Steel Association, to the steel industry during the “2014 Fifth China Steel Energy Conservation and Emission Reduction Forum”. Relevant leaders from the National Development and Reform Commission, the Ministry of Industry and Information Technology and the Ministry of Environmental Protection have exchanged views with more than 300 representatives on energy conservation and emission reduction policies, countermeasures and experience.