FOREWORD 1 SCOPE 2 NORMATIVE REFERENCE 3 PREPAREWELDING’S TECHNOLOGY REQUIREMENT 3.1 Clear deficiency and the groove types 3.2 Preheat before the welding 3.3 The welding material’s selection and using 3.4 Welding environment 4 REPAIR WELDING’S TECHNOLOGY REQUIREMENTS 5 ELIMINATE THE STRESS TREATMENT AFTER THEWELDING 6 TESTING APPENDIX A (INFORMATIVE ANNEX) PREHEAT TEMPERATURE’S SUPPLEMENTARY PROVISIONS APPENDIX B(INFORMATIVE ANNEX) WELD JOINT’S EVALUATE |