The seamless steel pipe is expressed by the method of outer diameter, wall thickness and thick-walled seamless pipe, which are mainly used for mechanical processing, coal mine, hydraulic steel and the like. The material of the thick-walled seamless steel pipe is divided into 10#, 20#, 35#, 45#, 20Cr, 40Cr, 42CrMo, 16Mn, 27SiMn, 12Cr1MoV, 10CrMo910, 15CrMo, 35CrMo and the like.
1. The seamless pipe must be worn with labor protection products before pickling. For the working environment on site, detailed inspection is also carried out, mainly to check whether the sling of the steel pipe is in good condition, and the work can be carried out after the confirmation is completed.
2. When the seamless tube is pickled, the pickling is mainly acid washing with hydrochloric acid, and the content of hydrochloric acid is generally 18% to 20%.
3. The staff also needs to know the acid concentration and temperature and the tonnage of the acid pickling pipe before the operation.
4. For pickled steel pipes, it is best to control the weight between 2 and 5 tons each time, and the time is 5 to 15 minutes. Time needs to be adjusted according to the weight. Steel pipes need to be vibrated frequently during the pickling process. When the pipe is placed under the acid tank, the steel pipe should be tilted to prevent accidental injury to hydrochloric acid.
The seamless pipe is made of high-quality carbon steel such as 10#, 20#, 30#, 35#, 45# or low-alloy structural steel such as 16Mn and 5MnV or hot-rolled or cold-rolled alloy structural steel such as 40Cr, 30CrMnSi, 45Mn2 and 40MnB. Made of. Seamless pipes made of low carbon steel such as 10# and 20# are mainly used for fluid conveying pipes. Seamless tubes made of medium carbon steel such as 45# and 40Cr are usually used to make mechanical parts, such as parts for automobiles and tractors.
The above is to introduce the daily maintenance of the seamless pipe. If the seamless pipe is not properly maintained, its service life will be shortened, and it will bring unnecessary losses to our seamless pipe factory and customers. Since everyone buys a seamless tube, it is inevitable that the service life can be longer, so everyone should pay attention to the maintenance of the seamless pipe.