1. When designing the accuracy and appearance of specifications, attention should be paid to the geometric figures and specifications of thick-walled honing pipes, which mainly include the diameter, thickness, and length of seamless steel pipes. These are some aspects that need to be paid attention to, but also need to pay attention to the curvature and the cutting inclination of the inner hole of the pipe, the weld angle and the obtuse angle.
2. The process performance requires that the surface of thick-wall honing pipes be smooth and clean. Quenching is a very critical step in the entire honing pipe manufacturing process. The quality of quenching not only affects the performance of seamless steel pipes, but also affects the elimination of oxide scale. Common shortcomings are: cracks, hair lines, internal folds, external folds, rolling, internal straights, external straights, delamination, scabs, dents, convex hulls, pits (surface), scratches (scratches), etc. .
3. Its physical properties include physical properties at room temperature, physical properties at a certain temperature, and corrosion resistance, such as air oxidation, water erosion resistance, strong acid resistance, etc., usually steel composition, mechanical properties, and purity and purity of other steels. Rigid heat treatment method.
