This standard specifies the spheroidite examination and grading for low carbon structural steel, low carbon alloy structural steel, medium carbon carbon structural steel and medium carbon alloy structural steel after spheroidizing annealing.
 This standard is applicable to the spheroidite examination and grading for low and medium carbon structural steel after spheroidizing annealing and before cold forming such as cold heading and cold extrusion.
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400-168-0010


		    	

				
											
									
									

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