Precision pipe 16*3 precision steel pipe precision bright steel pipe manufacturer
Precision pipe 16*3 precision steel pipe precision bright steel pipe manufacturer.In the cold drawing process of Wuxi seamless pipe, the degree of deformation is different from the outer surface layer to the inner surface layer due to the non-uniformity of deformation. The additional bending deformation and shear deformation near the outer surface layer are relatively large, so the total deformation degree of the outer layer is larger than that of the inner layer. Therefore, the outer grains are finer and the hardness is higher, while the inner layer is the opposite. The thicker the pipe wall is, the larger the friction coefficient is, and the larger the cone angle of the mold will be.
The difference of the total deformation degree of the inner and outer layers will be larger and larger, and the degree of the inhomogeneous structure and performance will increase. Because the deformation degree of inner and outer layers is different, the microstructure and properties of inner and outer layers of Wuxi seamless tube are different after deformation.
Precision pipe 16*3 precision steel pipe precision bright steel pipe manufacturer.Most stainless steel products need good corrosion resistance. Seamless pipes are similar to class I and class II tableware, kitchen utensils, water heaters, drinking fountains, etc. Some foreign businessmen also test the corrosion resistance of products: use NaCl aqueous solution to warm to boiling, after a period of time, the solution is to drain, wash and dry, determine the weight loss to determine the degree of corrosion.
Precision pipe 16*3 precision steel pipe precision bright steel pipe manufacturer.Joint pipe, etc. Compared with solid steel such as round steel, steel tube is a kind of economic section steel, which is widely used in manufacturing structural parts and mechanical parts, such as oil drill pipe, automobile transmission shaft, bicycle frame and steel scaffold used in construction. Using steel pipe to make ring parts can improve the utilization rate of materials, simplify the manufacturing process, save materials and processing time, such as rolling bearing rings, Jack sets, etc., which are now widely used in steel pipe manufacturing. Steel pipe is also an indispensable material for all kinds of conventional weapons. Steel pipe is used to manufacture barrel and barrel. According to the different cross-sectional shapes, steel pipes can be divided into circular pipes and special-shaped pipes. Because the circle area is the largest under the condition of the same circumference, more fluid can be transported by the circular tube. In addition, when the circular section bears the internal or external radial pressure, the force is relatively uniform. Therefore, the vast majority of steel pipes are circular pipes.
Precision pipe 16*3 precision steel pipe precision bright steel pipe manufacturer.There are many production methods of seamless pipe. According to the delivery requirements, it can be produced by hot rolling (about 80-90%) or cold rolling, cold drawing (about 10-20%). There are round, square or polygonal ingots, rolling billets or continuous casting billets for hot-rolled pipes. The quality of billets has a direct impact on the quality of pipes. There are three basic processes of hot rolling pipe: ① the ingot or billet is pierced into hollow thick wall rough pipe in the piercer; ② the rough pipe is thinned in the extension machine and extended into the rough pipe close to the wall thickness of the finished product; ③ the required finished pipe is rolled in the finishing mill. The rolling mill series is represented by the maximum outer diameter of the steel pipe to be produced (see rolling mill). See Table 1 for the production method of seamless steel pipe, and the number in brackets is the year of creation