annealing is a metal heat treatment process in which the metal is slowly heated to a certain temperature, kept for a sufficient time, and then cooled at a suitable rate. the main purpose is to release stress, increase material ductility and toughness, and produce special microstructures.annealing he

normalizing, also known as normalizing, is to heat the workpiece to ac3 (ac refers to the final temperature at which free ferrite is completely transformed into austenite during heating, generally between 727°c and 912°c) or acm (acm is in actual heating, the critical temperature line for complete a

the difference between annealing, normalizing, tempering and quenching of seamless steel pipes: 1. annealing the steel is heated to a certain temperature and kept at this temperature, and then slowly cooled to room temperature. there are several types of annealing, such as complete annealing, sphero

there are many varieties of steel pipes, and the steel grades (types) used are also different. the chemical composition of the same variety of steel pipes may also be different, but after heat treatment, the steel pipes can meet the relevant technical standards or the technical conditions of the pur

seamless steel pipe is a steel that is perforated from a whole round steel and has no welds on the surface. the seamless steel pipe has a hollow section and is widely used as a pipeline for transporting fluids, such as pipelines for transporting oil, natural gas, gas, water and certain solid materia