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Precision pipe 6*1 precision steel pipe precision bright steel pipe manufacturer
Precision pipe 6*1 precision steel pipe precision bright steel pipe manufacturer.Seamless tube is produced on automatic tube rolling mill. After the solid tube blank is inspected and the surface defects are removed, it is cut to the required length, centered on the end face of the piercing end of the tube blank, then sent to the heating furnace for heating, and perforated on the piercing machine. Under the action of the roller and the plug, the cavity is formed in the blank. Then send it to the automatic tube rolling machine to continue rolling. Finally, the wall thickness of the whole machine is equalized and the diameter is calibrated by the sizing machine to meet the specification requirements. It is an advanced method to produce hot-rolled seamless steel tube by continuous rolling mill. In order to obtain the seamless tube with smaller size and better quality, the method of cold rolling, cold drawing or the combination of the two must be used. Cold rolling is usually carried out on a two high mill, and steel pipes are rolled in a circular pass composed of a variable cross-section circular groove and a fixed conical head. Cold drawing is usually carried out on single chain or double chain cold drawing machines of 0.5-100t
Precision pipe 6*1 precision steel pipe precision bright steel pipe manufacturer.High temperature oxidation resistance is excellent. It has high temperature strength, oxidation resistance, carburizing resistance, acid resistance, alkali resistance, tensile strength and wear resistance, and the continuous use temperature is 1150 ℃. The common working temperature should not exceed 1050 ℃, and the maximum temperature should not exceed 1200 ℃. The higher the carbon content, the higher the hardness, but the worse the plasticity and toughness. Sulfur is a harmful impurity in steel. When the steel with high sulfur content is processed under high temperature and pressure, it is easy to be brittle, which is usually called hot brittleness. Phosphorus can obviously reduce the plasticity and toughness of steel, especially at low temperature. This phenomenon is called cold brittleness. In high-quality steel, sulfur and phosphorus should be strictly controlled. On the other hand, the high content of sulfur and phosphorus in low-carbon steel can make it cut easily, which is beneficial to improve the machinability of steel. Manganese can improve the strength of steel, weaken and eliminate the adverse effects of sulfur, and improve the hardenability of steel. High alloy steel (high manganese steel) with high manganese content has good wear resistance and other physical properties.
Precision pipe 6*1 precision steel pipe precision bright steel pipe manufacturer.In recent years, antibacterial and high temperature resistant stainless steel pipe products are the new favorite of stainless steel family. It is made by adding some antibacterial elements such as copper and silver to stainless steel through special treatment. This excellent antibacterial and self-cleaning property indicates that it has a very broad application prospect. The high temperature resistant stainless steel pipe has good oxidation resistance in the discontinuous use below 1600 ℃ and continuous use below 1700 ℃. In the range of 800-1575 ℃, it is better not to act continuously on the high temperature resistant stainless steel pipe, but when the high temperature resistant stainless steel pipe is used continuously outside the temperature range, the stainless steel has good heat resistance. The carbide precipitation resistance of high temperature cold drawn steel pipe is better than that of 316 stainless steel, and the above temperature range can be used. High temperature cold drawn steel pipe with excellent high temperature and oxidation resistance. It has high temperature strength, oxidation resistance, carburizing resistance, acid resistance, alkali resistance, tensile strength and wear resistance, and the continuous use temperature is 1150 ℃. The common working temperature should not exceed 1050 ℃, and the maximum temperature should not exceed 1200 ℃
Precision pipe 6*1 precision steel pipe precision bright steel pipe manufacturer.
Structural seamless pipe, this standard is applicable to seamless pipe for general structure and mechanical structure, and fluid seamless pipe standard is applicable to seamless pipe for conveying fluid.
Difference between structural seamless pipe and fluid seamless pipe:
The main difference between it and the structure seamless pipe is that the hydraulic test or ultrasonic, eddy current and magnetic flux leakage detection are carried out one by one for the fluid seamless pipe. Therefore, in the selection of pressure pipe standards, it is not suitable to use seamless fluid pipe. Seamless pipe is represented by outer diameter, wall thickness and thick wall seamless pipe, which is mainly used for machining, coal mine, hydraulic, and other purposes. The material of thick wall seamless pipe is divided into 10 × 10, 20 × 35, 35 × 45 × 16Mn, 27SiMn, 12Cr1MoV, 10CrMo910, 15CrMo, 35CrMo, etc
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