Introduce :
Standard: BS EN10296,BS EN 10297,GB 5310-1995,GB 3087-1999,GB/T 8163-1999,GB/T 8162-1999,GB 6479-2000,DIN 17175,DIN EN 10305,ASTM A53-2007,ASTM A333-2005,ASTM A312M-2001,ASTM A335M-2006,BS,GB,DIN,ASTM
Grade: A53(A,B),A106(B,C),A312,A333,A335 P11,A335 P5,A335 P91,A335 P9,A179-C,A335 P1,A213,A192,A333 Gr6,A210,A335 P12,A53-A369
Location:
China