Introduce :
Standard: GB/T8162,GB/T8163,GB/T 3087,ASTM A106-2006,ASTM A53-2007,ASTM A179-1990,ASME B36.10M-2004,API 5CT,API 5L,GB,ASTM,API
Grade: 10#,20#,16Mn,A53(A,B),A106(B,C),A192,API J55,API K55,API N80,API L80,API P110,St37,St52,10#-45#,A53-A369,API J55-API P110,ST35-ST52
Location:
China