Introduce :
Standard: GB 3087-1999,GB/T 8163-1999,GB/T 8162-1999,ASTM A106-2006,ASTM A53-2007,ASTM A179-1990,ANSI B36.10M-2004,API 5CT,API 5L,GB,ASTM,API
Grade: 10#,20#,16Mn,A53(A,B),A106(B,C),A179-C,A192,API J55,API K55,API N80,API L80,API P110,10#-45#,A53-A369,API J55-API P110
Location:
China