... etcMechanical seamless steel tubing: Applicable to the general structure, mechanical structure with seamless steel tubes. Standard GB/T8162 , GB ... A , GR. B, GR. C ASTM A106 GR. A , GR. B, GR. C DIN 162 St 37.0, St 44 ... 12m random Test: Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation), Technical Properties (Flattening Test, Flaring Test, Bending ...