The output value of advanced steel, new materials and SS is expected to reach 400 billion Yuan

Hot-rolled steel is a steel that has been heated and rolled at a high temperature. Its strength is not very high, but it is sufficient for our use. Its plasticity and weld-ability are good, so we use it more often; cold-rolled steel is ordinary hot rolling. Steel is strongly drawn beyond the steel in the strain hardening stage, its strength is high, but the toughness and weld-ability are poor, relatively hard and brittle! Hot rolling is the heating of the material during the rolling process or before rolling. Rolling is generally carried out after heating to a temperature above the crystallization temperature. Such as: 1000 degrees or more, hot rolling is processed at high temperatures. Allow the interior of the steel to recrystallize. Let it be more excellent. However, hot rolling does not change the structural properties of the metal. Cold rolled steel is steel that has been produced by cold rolling. Cold rolling is a steel sheet in which the No. 1 steel sheet is further rolled to a target thickness at room temperature. Compared with hot-rolled steel sheets, cold-rolled steel sheets are more precise in thickness and have a smooth and beautiful surface, as well as various superior mechanical properties, especially in terms of processability. Because cold-rolled raw rolls are brittle and hard, they are not suitable for processing. Therefore, cold-rolled steel sheets usually need to be given to customers after annealing, pickling and surface smoothing. The maximum thickness of cold rolling is 0.1--8.0MM or less. For example, the thickness of cold-rolled steel sheets in most factories is 4.5mm or less; the minimum thickness and width are determined according to the equipment capacity and market demand of each factory. The difference between cold rolled steel and hot rolled steel is not in the smelting process, but in the rolling temperature, or the rolling end temperature. When the finish rolling temperature is lower than the crystallization temperature of the steel, it becomes cold rolled steel. Hot-rolled steel is easy to roll, and the rolling efficiency is high, but the steel is oxidized under hot rolling conditions, and the surface of the product is black and gray. Cold-rolled steel requires high rolling mill power, low rolling efficiency, and intermediate annealing in order to eliminate work hardening during rolling, so the cost is also high, but the cold-rolled steel surface is bright and of good quality and can be directly used for processing. Finished products, especially the cold rolled steel plate is widely used.

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? 1. Steel strip material: Different steel strip materials determine the quality of stainless steel, which is a major factor affecting the price of stainless steel. For example, like the more common 201, 304, 316 currently on the market, the difference in raw materials of these three materials is more than 5,000 yuan per ton. 2. Logistics costs: Different delivery locations determine the difference in transportation costs. Long-distance transportation costs should be 500 yuan per ton, and short-distance transportation costs should be about 300 yuan per ton. 2. mold cost: Specifications are commonly used, not commonly used, common specifications are fast turnover, mold sharing costs are low. Because of the low usage and high cost sharing, a slightly larger set of formed tubes for the production of pipe molds has a specification of about 6000-20000. 4, surface treatment differences: surface treatment is usually divided into polishing, drawing and drawing, the cost is about 1 yuan / 1 meter. If you throw it into the lens barrel, the cost per ton will increase by 3,000 yuan. 5. Whether it includes tax: The VAT ticket contains 17% tax, so this will also affect its final offer. 6, batch size: a small number of single batch products will have an impact on the unit price.

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. 　　 Stainless steel square tube use stainless steel square tube is mainly used in construction, machinery manufacturing, steel construction, shipbuilding, solar power support, steel structure engineering, electric power engineering, power plant, agriculture and chemical machinery, glass curtain wall, automobile chassis, airport, boiler construction, high speed Road railings, building construction, pressure vessels, oil storage tanks, bridges, power station equipment, lifting transport machinery and other high-load welded structural parts, etc., are used in a wide range of applications. Stainless steel square tube specifications: 5*5~150*150mm, thickness: 0.4~6.0mm. Stainless steel square tube material: 304, 304L, TP304, TP316L, 316, 316L, 316Ti, 321, 347H, 310S. 　　Stainless steel square tube price: square tube 75-75 (2.5-6.0), square tube 70-70 (2.0-5.0), square tube 60-60 (1.2-5.0); square tube 50-50 (1.0-5.0), square Tube 40-40 (0.8-4.5), square tube 30-30 (0.8-3.0).