2019 billet seamless pipe enterprises will face enormous challenges

 China's seamless pipe network has learned that the production efficiency and product quality of the rolling mills have obvious advantages, but the investment amount is large, and the pressure on private enterprises is relatively high. In 2018, Shandong Jinzhengyang put into operation a 180-rolling pipeline, and the Luli Group will kneel down. Jinsteel has put into operation two 159 units (a total of six, with a total capacity of 3 million tons). From the perspective of market response, the seamless pipes produced by the continuous rolling mills are more popular.
　　
　　Hot rolling (extrusion seamless steel pipe): round billet → heating → perforation → three-roll cross-rolling, continuous rolling or extrusion → pipe removal → sizing (or reducing diameter) → cooling → straightening → hydrostatic test (or Flaw detection) → mark → warehousing
　　
　　The raw material for rolling the seamless pipe is a round tube blank, and the round tube embryo is cut into a blank having a length of about 1 m by a cutting machine, and sent to a furnace for heating via a conveyor belt. The billet is fed into a furnace and heated to a temperature of approximately 1200 degrees Celsius. The fuel is hydrogen or acetylene. Furnace temperature control is a critical issue. After the round tube blank is released, it is subjected to a through-hole punching machine. The more common perforating machine is a conical roller punching machine. This perforating machine has high production efficiency, good product quality, large diameter of perforation and can wear a variety of steel types. After perforation, the round billet is successively rolled, rolled or extruded by three rolls. After extrusion, the tube should be sizing. The sizing machine is rotated at a high speed by a conical drill bit into a steel core to form a steel pipe. The inner diameter of the steel pipe is determined by the outer diameter of the sizing machine drill bit. After the steel pipe has been sized, it enters the cooling tower and is cooled by water spray. After the steel pipe is cooled, it is straightened. After the steel pipe is straightened, it is sent to a metal flaw detector (or water pressure test) by a conveyor belt for internal flaw detection. If there are cracks inside the steel pipe, bubbles and other problems will be detected. After the quality inspection of the steel pipe, it must be carefully selected by hand. After the quality inspection of the steel pipe, the paint is sprayed with the number, specification, production batch number, etc. It is hoisted into the warehouse by a crane.
　　
　　In terms of raw materials, sheet metal steel pipe is built on the advantages of Luli tube blank, with a total design capacity of 3 million tons and a capacity of 3.5 million tons of Luli tube billet. As a result, Luli will mainly produce tube billets in sheet metal steel tubes. Other billet enterprises will face the problem that the billet is difficult to buy, the billet price is high, and for the long process, the blast furnace gas can replace the natural gas, and the one-ton pipe can save the cost of 50-90 yuan.
　　
　　The advantages of comprehensive products and costs are undoubtedly a major impact for Shandong seamless billing companies. And this year's profit level has made the restructuring enterprises more pressured, and the investment in product upgrades is even more tense.
　　
　　China's seamless pipe network has been learned: cold drawn (rolled) seamless steel pipe: round tube billet → heating → perforation → head → annealing → pickling → oiling (copper plating) → multi-pass cold drawing (cold rolling) → billet Tube → heat treatment → straightening → hydraulic test (inspection) → marking → storage.
　　
　　The rolling method of cold drawn (rolled) seamless steel pipe is more complicated than hot rolling (extrusion seamless steel pipe). The first three steps of their production process are basically the same. The difference begins with the fourth step. After the round billet is hollowed out, it is required to start and anneal. After annealing, it is acid washed with a special acidic liquid. After pickling, apply oil. This is followed by a multi-pass cold drawing (cold rolling) of the blank tube, followed by a special heat treatment. After heat treatment, it is straightened. After the steel pipe is straightened, it is sent to a metal flaw detector (or water pressure test) by a conveyor belt for internal flaw detection. If there are cracks inside the steel pipe, bubbles and other problems will be detected. After the quality inspection of the steel pipe, it must be carefully selected by hand. After the quality inspection of the steel pipe, the paint is sprayed with the number, specification, production batch number, etc. It is hoisted into the warehouse by a crane.
　　
　　Overall outlook for 2019, the current tube blanks are mainly from Jiangxin and Luli. In the case of sheet metal steel tubes occupying more billets in the future, it is not excluded that other special steel enterprises in Shandong will increase the number of 20# billets. Production Plan. Even if the billet resources can be supplied normally, the competitiveness of the products will decline, and the cost of the products will be high, and it will be difficult in the forward wave.
　　
　　In 2019, it was a cruel year for the company. First, we ensure that our raw materials are normal. Secondly, in terms of cost control, we will sign a long-term order with the company, or the purchaser will judge the market more wisely. The most important thing is to make your products stand out in the homogenized Shandong market. China's seamless pipe network has been informed