
294 برگ NATIONAL BOARD INSPECTION CODE Part 3:Repairs and Alterations 2015 سرفصلها: General and Administrative Requirements Welding and Heat Treatment Requirements for Repairs and Alterations Examination and Testing Certification/Documentation and Stamping Supplements NBIC Policy for Metrication Preparation of Technical Inquiries to the National Board Inspection Glossary of Terms NBIC Approved Interpretations ...