Seamless steel pipes must be tested for mechanical properties. Seamless steel pipes are widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipes, automobile transmission shafts, bicycle frames, and steel scaffolding used in construction. Steel pipes are used t

Seamless steel pipes are very common. Commonly used seamless steel pipes are rolled from ordinary carbon structural steel, low-alloy structural steel or alloy structural steel, and are mainly used as pipelines or structural parts for conveying fluids. According to different uses, it can be divided i