APPLICATION IN STRUCTURE PIPES. StandardGBStandardGB/T 3094-2000Grade10#-45#, 16Mn, A53-A369, ST35-ST52, Q195-Q345Grade10#, 20#, 45#, 16Mn, A53(A,B), A106(B,C), A335 P1, St37, St52, St42-2,...Thickness1 - 30 mmSection ShapeSquareOuter Diameter20*40-100*200mmPlace of OriginTianjin, China (Mainland)Secondary Or NotNon-secondaryApplicationStructure PipeTechniqueHot RolledCertificationISO, APISurface ...