Introduce :
Standard: GB 5310-1995,GB 3087-1999,GB/T 8163-1999,GB/T 8162-1999,DIN 1626,DIN 1629/3,DIN 1629/4,DIN 17175,GB,DIN,ASTM,ANSI,API ,DIN ,GB etc
Grade: 10#,20#,45#,A53(A,B),A106(B,C),A179-C,A192,Q235,Q345,Q195,10#-45#,A53-A369,Q195-Q345
Location:
China