Normalizing, also known as normalizing, is to heat the workpiece to Ac3 (Ac refers to the final temperature at which all free ferrite is transformed into austenite during heating.Generally from 727℃ to 912℃) or Acm (Acm is the critical temperature line for complete austenitization of hypereutectoid steel in actual heating) 30~50℃.After holding for a period of time, the metal heat treatment process cooled in air or by water, spray or blowing is removed from the furnace.

Compared with ordinary seamless pipes, cs seamless pipes have simpler smelting process, good pressure processing performance, good cutting performance, and comprehensive mechanical properties are also better than ordinary seamless pipes, and even it has a lower cost than ordinary seamless pipes. . Therefore, many people are more inclined to choose cs seamless pipe.

The line pipe is to transport the oil and soda extracted from the ground to the oil and gas industry enterprises through the line pipe. The line pipe includes seamless pipe and welded steel pipe, and the pipe end has a flat end, a threaded end and a socket end;The connection methods are end welding, collision connection, socket connection, etc.

When hot-rolling seamless steel pipes, the centering of the tube blank is to make the plug correspond accurately to the axis of the tube blank during perforation, and the center position of the tube blank section is along the axis of the tube blank. A circular hole of a certain size is machined like a funnel.

Low and medium pressure boiler tubes are made of steel ingots or solid tube billets through perforation into capillary tubes, which are then hot-rolled, cold-rolled or cold-drawn.It is suitable for the manufacture of high-quality carbon structural steel hot-rolled, hot-extruded, hot-expanded and cold-drawn, cold-rolled seamless steel pipes for various low and medium pressure boilers.

Galvanized steel is widely used in all walks of life. The advantage of using galvanized steel is to protect the internal steel structure with metallic zinc that can form a dense oxide protective layer in the air. In the case of being welded or scratched, due to the existence of Zn-Fe primary battery, the relatively active galvanized part can be used as a sacrificial anode, delaying the corrosion of steel and having good corrosion resistance. However, due to the existence of the galvanized layer, cracks, pores, and slag inclusions are easily generated during welding, and it is difficult to obtain good welding quality.