Introduce :
Standard: BS 4568,GB 5310-1995,GB 9948-2006,GB/T 3090-2000,GB/T 3094-2000,GB/T3901,ASTM A106-2006,ASTM A213-2001,ASTM A53-2007,ASME B36.10M-2004,BS,GB,ASTM
Grade: A53(A,B),A106(B,C),A269,A312,St37,St52,St42,St45,Q235,Q345,Q195,Q215,A53-A369,ST35-ST52,Q195-Q345
Location:
China