... , EN39, DIN2440/2444, ISO3183, ISO11960, JISG3444,JISG3454 etc.Quality gradeFirst class, prime, newly produced, secondary , stock etc.Material/Steel gradeA, B ... etc.CertificateEN10217, EN10219, API 5L PSL1/ PSL2, KS 4602, KS3583, GB/T9711.1/2,etc.EndPlain end, beveled, cut square, grooved ...