Contents Foreword 1 Scope 2 Normative references 3 Terms and definitions 4 Basic requirements 5 Marking 6 Cold and hot forming 7 Expanding 8 Welding 9 Heat treatment Annex A (Informative) Tube bending process test Annex B (Normative) Additional requirements for membrane-panel welding process assessment Annex C (Normative) Classification of materials for boiler welding process assessment |