DIN2391 ST52 Precision Steel Tube 

Precision steel tube are commonly used in industries such as automotive, aerospace, medical, and industrial equipment manufacturing. They are used for a wide range of applications, including hydraulic and pneumatic systems, fuel injection systems, bearings, and other critical components.It is one kind of Seamless Steel Tube. DIN 2391 is a technical standard for precision seamless  steel tube. It specifies the dimensions, tolerances, and technical delivery conditions for cold-drawn precision seamless steel tubes. The standard is published by the Deutsches Institut für Normung (DIN), which is the German Institute for Standardization. DIN 2391 applies to precision steel tubes that are used in various industries such as automotive, hydraulic systems, and mechanical engineering. These steel tube are typically made from non-alloy and alloy steel grades and are designed to withstand high-pressure conditions and provide accurate dimensional tolerances.…