45th seamless steel pipe and 40CR steel pipe

No. 45 seamless steel tube is a kind of material in steel, which belongs to high-quality carbon structural steel. A large number of mold production companies will use it to make mold steel.
40CR steel pipe: This type of steel is used to make mechanical parts that can withstand medium- and medium-speed work, such as the steering knuckles and rear axles of automobiles, and gears, shafts, worms, spline shafts, and top sleeves on machine tools. After quenching and tempering at medium temperature, it is used to manufacture parts that are subjected to high load, impact and medium speed work, such as gears, spindles, oil pump rotors, sliders, and collars, etc.; they are used for manufacturing heavy-duty after quenching and low-temperature tempering. Parts with low load, low impact and wear resistance, solid thickness below 25mm on the cross section, such as worm, spindle, shaft, collar, etc.; used for high surface hardness and resistance after quenched and quenched by high frequency Parts that are abrasive without significant impact, such as gears, sleeves, shafts, spindles, crankshafts, spindles, pins, connecting rods, screws, nuts, intake valves, etc. In addition, this steel is suitable for manufacturing various transmission parts for carbonitriding treatment, such as gears and shafts with large diameter and low temperature toughness.