From the overall operation of the steel circulation industry in February, the main steel thick-walled steel pipe market has recovered after the holiday , the downstream orders have increased, the terminal demand has improved, the sales volume of steel trade enterprises has increased, and the steel circulation market activity has increased. From the perspective of supply, in February 2016, the average daily output of crude steel in the key steel enterprises of the China Iron and Steel Association was 1,558,600 tons, which was an increase of 30,200 tons compared with the average daily output of crude steel in January. According to a rough estimate of Lange Steel, the daily output of crude steel increased in February, and since it was only 29 days in February, the crude steel output in February will drop by about 61 million tons.

Recently, large domestic steel mills and research institutes have visited the company frequently, and exchanges and inspection activities have further increased.

The aim is to introduce high-level innovation and entrepreneurial talents and promote the rapid development of enterprises.

The Φ920 hot-rolled seamless steel pipe production line project with a total investment of more than 1 billion yuan has progressed smoothly since the construction of the “Chengde Metallurgical Industrial Park” in June 2007.

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 square tube is a kind of square tube material. In fact, it is a steel tube with the same length. The strip steel is processed and rolled. Usually, the strip is unpacked, flattened, crimped, welded to form a round tube, and then rolled into a square tube by a round tube and cut to a desired length. Stainless steel square tubes are mainly divided into two types: seamless and welded. The seamless square tube is formed by extruding a seamless tube. For those who want to buy stainless steel square tubes, it is necessary to know the specific price. So today, Xiaobian will tell you about the market price of 4*6 stainless steel square tube.

　　As a material with a wide range of applications, stainless steel has a very high market demand. So what is the current market for stainless steel? Next, Xiaobian will share with you the latest stainless steel price list, I hope you will like it.

　　The 316L is a model in stainless steel tubing and is currently very valuable in use and market demand. People who often pay attention to the price of stainless steel pipes will find that the price of stainless steel pipes fluctuates greatly, sometimes rising to exaggeration, and sometimes falling to the bottom. Only after we understand the factors affecting the price of stainless steel pipes can we be keenly aware of the fluctuations in the price of stainless steel pipes and respond well in advance. So what is the price of 316L steel pipe?

Properties of Galvanized Steel Pipe Welds Galvanizing has been used to protect iron and steel from rusting for over a hundred years in places as diverse as the wire rope used for the suspension cables on the Brooklyn Bridge to gutters on houses. Galvanizing is simply coating of zinc over steel. Like paint, galvanizing protects steel from rusting by forming a barrier between the steel and the environment, but galvanizing goes one giant step further than paint — it also provides electrochemical protection of the steel. Since zinc is electrochemically more reactive than steel, it oxidizes to protect the steel near it; as a result, even if a galvanized steel surface is scratched down to the bare steel, the galvanizing coating will prevent the steel from rusting. Galvanized steel is, therefore, a superior product to steel with any other type of coating on it since it protects the steel even when the coating is damaged in handling or in service.

The corrosion resistances of enamel-coated steel pipe in 3.5 wt% NaCl solution was evaluated and compared with those of epoxy-coated pipe using open-circuit potential, linear po- larization resistance, and electrochemical impedance spectros- copy tests.

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

  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.

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:

　　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.

Recently, the price of 45# seamless steel pipe has skyrocketed and plummeted. After the violent rise, the market quickly returned to calm. According to industry analysts, the current stock market of 45# seamless steel pipe is still low, and the market is steadily rising. It is worth looking forward to the recent surge in the price of 45# seamless steel pipe. After the violent rise, the market quickly returned to calm. According to industry analysts, the current stock market of 45# seamless steel pipe is still low, and the market is steadily rising.

According to the German Business Daily reported in May 11th, June 1st is approaching.

　　Large-diameter seamless pipe prices fall back to the market with a wait-and-see attitude

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.