Alloy steel is a series of alloy which its main content is steel. To add different metal elements with different ratios in steel can change the mechanical properties of alloy steel.

American Society for Testing and Materials(ASTM), American Society of Mechanical Engineers (ASME)

DIN/EN- European Standards for Steel

Germany Safety(GS), Deutsches Institut für Normung(DIN)

JIS

Japanese Industrial Standards (JIS) specifies the standards used for industrial activities in Japan. 

DIN 2391-1 cold Drawn or cold rolled steel tube is used in hydraulic & pneumatic cylinder, mechanical and Automotive engineering.

DIN 2391 standard specifies the Seamless steel tubes used forMechanical and Automobile.

Description Name:

DIN 2391 Seamless cold drawn tubes                   DIN 2391 NBK Seamless Precision Steel Tubes

DIN 2391 Seamless precision steel tubes             DIN 2391 ST35 Seamless precision steel tubes

ST35 Precision tubes                                             DIN 2391 ST45 Seamless precision steel tubes

ST45 Precision tubes                                             DIN 2391 ST52 Seamless precision steel tubes

ST52 Precision tubes                                             ST 52 Honed tubes

Seamless precision tubes                                      ST52 cylinder tubes

ASTM A335 Chrome-Moly Seamless Pipe

Unscheduled heavy wall pipe thicknesses available up to 4 inches.

Mechanical Properties

(Note: This is summarized information from ASME Specification A335. Please refer to the specific Standard or Specification or contact us for more details.)