... Grade: A515 Grade 60, A515 Grade 65, A515 Grade 70, A516 Grade 60, A516 Grade 65, A516 Grade70, A537 Class 1, A537 ... C, SA515 Grade 60, SA515 Grade 65, SA515 Grade 70, SA516 Grade 60, SA516 Grade 65, SA516 Grade702>. Standard: JIS G3103 Grade ...