Introduce :
Standard: GB 3087-1999,GB/T 8163-1999,GB/T 9711.3-2005,ASTM A106-2006,ASTM A53-2007,ASTM A179-1990,API 5L,GB,ASTM,API
Grade: 10#,20#,45#,16Mn,A53(A,B),A106(B,C),A179-C,St52,St42,Q235,Q345,Q195,Q215,10#-45#,A53-A369,ST35-ST52,Q195-Q345
Location:
China