Qujing Zhanyi stainless steel decorative pipe production and sales price and situation The relevant supporting equipment for high-frequency welded pipes is mainly CNC cabinets, including: high-frequency main cabinets, Q345B welded pipe high-frequency inverter cabinets, and speed control cabinets (also commonly known as "drag") , Computer flying saw CNC machine (also known as "computer flying saw operating table") and so on. Where is Qujing Zhanyi at the same time some impurities contained in it will also be squeezed out of the weld. It should be noted that in the process of processing Q345B straight seam welded pipe, the placement of the resistor is very important. If you focus too much below the confluence point, although you can achieve higher efficiency, it is easily damaged. Usually, the resistor is placed in the tube so that there is a gap equivalent to the wall thickness of the tube from the inner surface of the tube. Welded pipes are required but the spot market consolidated in a narrow range from last week to week. Last week, driven by the strength of the futures market, the price rose significantly. The market's trading performance is mostly influenced by the futures market. When the futures market rises, the transaction improves, and when the futures market declines, the transaction is light. Last week, the Tangshan area re-environmental protection documents, requiring the September to stop the production limit no less than August, affected by this, welded pipe billets from weak to strong. The rapid decline in steel is not only due to the weakening of steel production restrictions, but also mainly because of the excessive and rapid rise in steel in the early stage. Similarly, the moderate recovery of steel futures last week is actually a reasonable repair. Analysis project Shenzhen Shenzhen welded pipe inventory continued to rise poorly caused the market to worry about the implementation of the standard steel pipe scaffolding completed, Q345B straight seam welding prohibits anyone to arbitrary steel pipe scaffolding and any parts. Qujing Zhanyi stainless steel decorative pipe production and sales price and situation Hardness index 316L stainless steel welded pipe is a basic pipe, so it also has a lot of hard and necessary indicators, including many aspects, we will talk about the hardness index of 316L stainless steel welded pipe below .According to the different test and combined range, the hardness can be divided into Brinell hardness, Rockwell hardness, Vickers hardness, Shore hardness, micro hardness and high temperature hardness. Brinell, Rockwell, and Victoria hardness are commonly used for pipes. Brinell hardness. A, Brinell hardness (HB uses a steel ball or cemented carbide ball with a fixed diameter, with a defined test force (F) surface, and the test force is removed after the specified retention time, and the sample surface is measured. The indentation diameter (L) Brinell hardness value is the quotient obtained by dividing the test force by the indentation spherical surface area. It is expressed in HBS (steel ball), the unit is N / mm2 (MPa, and its calculation formula is: F-- 316L stainless steel welded pipe specimen surface test force, N, D-- diameter of test steel ball, mm d--indentation uniform diameter, mm. Brinell hardness measurement is more accurate and reliable, but generally HBS is only suitable for 450N / mm2 ( Metal materials below MPa) are not suitable for harder steel or thinner 316L stainless steel welded pipes. At 316L In the scale of stainless steel welded pipe, Brinell hardness is widely used, and the hardness of the material is often expressed by the indentation diameter d, which is intuitive and convenient. What standard Q345B pipe is used for the target high-frequency Q345B pipe resistance welding? Steel plate or strip steel. Due to different welding processes, it is divided into furnace welded pipe, electric welded pipe and automatic arc welded pipe. Due to its different welding forms, it can be divided into straight seam welded pipe and spiral welded pipe. Due to its end shape, it can be divided into circular Welded pipes and special-shaped (square, flat, etc.) welded pipes. Due to the different materials and uses of welded pipes, welded pipes can be divided into the following categories: GB / T3091-2008 (welded pipes for low-pressure fluid transport): mainly used for sincere service
Qujing Zhanyi stainless steel decorative pipe production and sales price and situation Therefore, most of the more welded pipes use straight seam welding, large diameter welded pipes are mostly spiral welded pipes. Q345B welded pipe market resources are tight and demand is temporarily stable. Q345B welded pipe market transactions are similar. Downstream iron and steel enterprises still have a large demand for steelmaking pig iron, and steelmaking pig iron market resources are relatively tight. Most manufacturers have no inventory or a small amount of inventory, which has led to iron and steel plants generally sharply adjusting prices. Pig iron has risen to a new high during the year, and market transactions have been poor. After the steelmaking pig iron increased in some areas, steel mills' purchase willingness decreased, and most of them were based on inquiry and wait-and-see. The wait-and-see mood in the Q345B welded pipe market gradually increased. Due to the continuous upward adjustment of Q345B welded pipe. Steel mills and traders have had poor shipments at both ends. In terms of sheet metal, the performance of hot-rolled shipments is more prominent. Although the sales of Q345B welded pipes are relatively high compared to the previous season, East China has successively stepped out of the rainy season, and demand for Q345B steel pipes may resume. Taken together, under the circumstances that environmental protection is expected to lead to tighter supply progress and demand has not dropped significantly, steel prices will remain strong. It is expected that steel prices in August will be in a situation of strong shocks. From a fundamental point of view, the current environmental protection factors are fermenting again. In the case that environmental protection may be expected to lead to tighter supply progress and demand has not declined significantly, inventory has continued to decline, and steel prices will remain strong. Operationally, it is suggested that the RB1810 contract can be involved in more than 4,000 lines. The Q345B steel pipe is referenced to 3900, and it has reached the target 4500 in a month. The impact of steel plant production limitation is weak, and it is expected that the pressure may continue to improve. Q345B welded pipes still have high prices in the afternoon. Today the local mainstream is rising steadily. Q345B welded pipes have increased by 20-40 yuan / ton. The overall external growth is still relatively strong, and Futures snails continue to run at a high level, with an increase of more than a hundred points. Tangshan Steel Billet continues to chase up after the Dragon Boat Festival this afternoon, which has significantly boosted the mentality of spot merchants. According to market feedback: downstream is affected by buying and not buying sentiment, and overall transactions are still acceptable. Low- and medium-level resources are reduced, and some merchants still report high prices in the afternoon. This week, Beijing-Tianjin-Hebei hot roll inventory as a whole is trending from last week. Qujing Zhanyi 16 * 0.5 stainless steel decorative tube, Q345B welded pipe, especially in Handan area, the inventory growth exceeds 10,000. Tons, Tangshan area second only to Handan, an increase of 0.8 million tons. And Tianjin, Shijiazhuang, and other places are still Q345 metric welded pipes: specifications are used as seamless pipe forms, welded steel pipes expressed by outer diameter * wall thickness millimeters, and the tropical zone of ordinary carbon steel, high-quality carbon steel or universal low alloy steel , Cold strip welding, or cold welding after tropical welding. The metric welded pipe is divided into general energy and thin wall. It is generally used as structural parts, such as transmission shafts, or to convey fluids. The thin wall is used for furniture and lamps. The strength and bending test of steel pipes must be guaranteed. During the process, Q345B straight seam welded pipe and welded pipe, but the longitudinal direction will inevitably have a lot of T-shaped, so that the possibility of existence is greatly improved, and the residual stress metal of the T-shaped weld is often in a dimensional stress state, The possibility of cracks increases. According to the requirements of each submerged arc welding process, there should be an extinction arc in each longitudinal circumferential seam. The conditions that cannot be met may be extinction. Strength characteristics of Q345B straight seam welded pipe. Qujing Zhanyi led to a reduction in the number of orders. In addition to the small Q345B welded pipe and the United States released a list of tariff-added products on the 15th, the small Q345B welded pipe indirectly affected the procurement demand for steel products in the international market. Therefore, the decline in steel exports in July is also reasonable. The national market rose 8 yuan / ton from the previous trading day, and the market was flat compared to the previous trading day. In terms of HRC, the national market for Q235B 75mm dropped by 12 yuan / ton from the previous trading day. On the 10th, the national billet market gradually adjusted. Jiangsu Pufang billet was stable, and small Q345B welded pipe billets remained stable. The welding characteristics of the marketing department can be divided into automatic welding and manual welding according to the welding process. Automatic welding generally uses submerged arc welding and plasma welding, and manual welding generally uses argon arc welding. The material of the welded pipe is good and the product wins good reputation. Huizhou's short-term Q345B welded pipe has low inventory and environmental protection and the peak season is expected to have limited downward space on the disk. Overseas mines' shipping volume has remained loose recently. Considering the shipping time factor, the pressure on port arrivals may be highlighted later this month. At the same time, the port inventory of steel mills may increase again under limited production; the inventory days of steel mills remain at a high level, and Q345B welded pipe limits There is still insufficient power to replenish stocks under production. Qujing Zhanyi stainless steel welded pipes have insufficient upward momentum due to weak fundamentals, but the weak exchange rate and sea freight will still be absolutely supported, mainly in the disk range. Qujing Zhanyi stainless steel decorative pipe production and sales price and situation with the limited production and deepening Q345B welded pipe implementation standards and use growth rate fell 0.3 percentage points from January to September, the year-on-year growth rate of Q345B welded pipe fell from 2 in the previous month to the industry investment growth rate Still depressed. In addition to the economic data that was less than expected and the investment growth rate to decline, the Ministry of Finance recently launched a large-scale clean-up of nearly 180,000 PPP warehousing projects, tightened the subway project review, and the Baotou subway project was suspended. Expected to be pessimistic According to data, from January to October 2017, the output of crude steel, pig iron and steel products were 709.5 million, 60.297 million and 90.273 million, respectively. Q345B welded pipes increased year-on-year.
Qujing Zhanyi stainless steel decorative pipe production and sales price and situation The groove is mainly for welding workpieces. Q345B welded pipe guarantees weldability. Normally, the machined surface is machined. If the requirements are not high, gas cutting can also be performed (if it is a weld like, If welding inspection is needed, it can only be machined), but oxidized slag is required. X-shaped grooves, V-shaped grooves, U-shaped grooves, etc. are required for Q345B welded pipes, but most of them require a fixed blunt edge. where is it? Q345B Welded Pipe Article Guide: This article will give you a detailed introduction to welded steel pipe, also called welded pipe, which is a steel pipe or strip steel that is made by welding after being rolled and formed. It is generally 6 meters in length. The good technology of welded steel pipe is simple, high efficiency, many varieties and specifications, and low investment in equipment. Q345B welded pipe is generally lower in strength than seamless steel pipe. Industry management Welded pipes Straight seam welded steel pipes for low-pressure fluid transportation (GB / T3092-199 also known as general welded pipes, commonly known as black pipes. It is mainly used to transport water, gas, air, oil, heating steam and other low pressure fluids and other uses Welded steel pipe. The thickness of the steel pipe is divided into ordinary steel pipe and thick steel pipe. The form of the pipe end is divided into non-threaded steel pipe (light pipe) and threaded steel pipe. The specifications of the steel pipe are expressed by the nominal diameter (mm). The nominal diameter is the inner diameter. Approximate value. Conventionally, inches are commonly used, such as 11/2, etc. In addition to being directly used for conveying fluids, low-pressure fluid transportation welded steel pipes are also widely used as raw pipes for galvanized welded steel pipes for low-pressure fluid transportation. This diameter can be used for plasma cutting of spiral-welded pipe. For small diameters less than 800mm, small smoke can not emerge from the direction of the pipe, no internal baffle is necessary. External baffle. Stainless steel welded steel pipe for fluid transfer). Mainly used to transport low-pressure corrosive media. Representative materials are 06Cr19Ni 022Cr19Ni 06Cr19Ni110Ti, 00Cr1 0Cr18Ni11Nb, 06Cr17Ni12Mo2 and so on. Safe material 316 / 316L (diameter wall thickness) x wall thickness x 0.02513x length = weight (kg) Common formulas for weight calculation: material 304 / 304L (diameter-wall thickness) x wall thickness x 0.02491x length = weight (kg)