... , air and railway6.Chemical composition7.SizeNameseamless steel pipe1.Applicantcarbon structural steel seamless steel pipeGrade10,20,35,45,40Mn2,45Mn2,27SiMn ... 17175-1979 ,BS3059:Part 2:1990 4.Applicant Seamless steel pipe for low and Medium pressure BoilerGrade:10,20 ... G3441-19887. ApplicantSeamless steel pipe for Gas CylindersGrade:34Mn2V,30CrMo,35CrMo,45.8.Application1),API SPCE 5L For the purpose ...