30CrMnSi seamless steel pipe is a grade of alloy structural steel stipulated by Chinese national standards. […]

The main production processes of large-diameter seamless steel pipes in my country are hot-rolled large-diameter seamless steel pipes and hot-expanded-diameter seamless steel pipes. […]

After quenching and tempering treatment, 40Cr steel pipe has good comprehensive mechanical properties, good low temperature impact toughness and low notch sensitivity. […]

20G steel pipe is the GB/5310 national standard steel grade (corresponding foreign grades: German st45.8, Japanese STB42, American SA106B), which is the most commonly used boiler steel pipe steel, and its chemical composition and mechanical properties are […]

Alloy pipes are defined by steel pipes according to the production materials (that is, materials), as the name implies, they are pipes made of alloys; while seamless pipes are defined by steel pipes according to the production process (seamless), the diff […]