Shandong Seamless Steel Tube Factory arranges to provide large-caliber thick-walled seamless steel tubes. The knowledge of large-caliber thick-walled seamless steel tubes is made by ingots made of steel ingots or solid billets and then hot rolled. Large-caliber thick-walled seamless steel pipe has an important position in China's steel pipe industry. Large-diameter thick-walled seamless steel pipe According to incomplete statistics, there are about 240 seamless pipe production enterprises in China, and about 250 sets of large-caliber thick-walled seamless steel pipe units. The large-caliber thick-walled seamless steel pipe is mainly based on it. The external diameter of the steel pipe, the general diameter of 325 mm or more we call the large diameter steel pipe, thick-walled it, the general wall thickness of 20 mm or more on it, the following is the manufacturing process of steel: steel pipe The raw material is a steel pipe blank, which is cut into a length of about 1 meter through a cutting machine and sent to a furnace for heating by a conveyor belt. The billet is heated in a furnace and the temperature is approximately 1200°C. The fuel is hydrogen or acetylene. Furnace temperature control is a key issue. After the tube blanks are released, they are put through the pressure puncher. The most common punching machine is a conical roller puncher. This puncher has high production efficiency, good product quality, large perforation diameter, and can wear a variety of steel types. After piercing, the round billet is successively rolled, rolled or extruded by three rolls. After squeezing, take off the sizing. The sizing machine drills through the cone at a high speed into the steel die to form a steel pipe. The inner diameter of Wanlihong Steel Tube is determined by the outer diameter length of the sizing machine drill. After the steel pipe is sizing, it enters the cooling tower and is cooled by spray water. After the steel pipe is cooled, it must be straightened (it is realized in many manufacturers that it is no longer necessary to straighten the straightener, but directly passes through the rolling mill. It reached the straightness of its pipe itself). After straightening the steel pipe, it is sent to the metal detector (or hydraulic pressure test) by the conveyor belt for internal inspection. If there are cracks inside the pipe, air bubbles and other problems will be detected. After the quality inspection of the steel pipe, it must pass strict manual selection (there are laser detection inspections now). After the quality inspection of the steel pipe, the paint is sprayed with the serial number, specifications and production lot number. And lifted into the warehouse by a crane. Shandong seamless steel pipe plant Liaocheng Wanlihong Steel Pipe Factory is a professional manufacturer of seamless steel pipe, high quality and low price, spot supply of Shandong Seamless Steel Tube Factory Wanlihong Steel Pipe welcomes friends from all walks of life come to order negotiations, the hotline: 0635-2110045 2110345.