... PIPEStandardAPI5L,A106,A53,A335,A333,DIN1629,DIN2448,NFA49,GOST8731,JISG3454GradeGR.B,X42,X56,P11, P22,ST37,ST45.8,ST52,S235JR,S355JR ... can be 3PE or FBE or Galv. CoatedInspection & Certification1Certification: ISO, API, ASTM, DIN etc2 Mill Test Certificate: EN10204/3.1B3Third party ...