... , air and railway6.Chemical composition7.SizeNameseamless steel pipe1.Applicantcarbon structural steel seamless steel pipeGrade10,20,35,45,40Mn2,45Mn2,27SiMn ... ASTN A519-98, JIS G3441-1994 2.Applicant Seamless steel tubes for liquid serviceGrade 10,20,Q295,Q345 Stardand GB ... ASTM A192,ASTM SA179,SA192,BS30595. ApplicantHigh pressure seamless steel tube for chemical Fertilizer EguipmentsGrade:10,20G,Q345 ...