DIN EN10210-1 Hot Finished Heavy Wall Steel Tubing

DIN EN 10210-1 Hot finished Heavy Wall Steel Tubing of non-alloy and fine grain steels   DIN EN 10210-1  Hot finished structural hollow sections of non-alloy and fine grain steels Part 1:  Technical delivery conditions Part 2:  Tolerances, dimensions and sectional properties   Cold forming: Process is done at ambient temperature   Structrual hollow section manufacturing process: Structural hollow sections are manufactured by seamless or by welding. Welded sections manufactured by contiuous process. Electric welded hollow sections are supplied without trimming the internal weld bead.   Delivery conditon: Qualities  JR, J0, J2 and K2 - Hot finished Qualities  N and NL - normalized.  (normalized rolled) - for accelerated cooling    +DC - for quenching and tempering    +QT   Surface conditon: The hollow sections have a smooth surface corresponding to the manufacturing method used…