Pipe Welding 150 mm gas welding (college)

CONTENT
1. INTRODUCTION 2
2. Material products. CLASSIFICATION OF STEEL 4
2.1. Classification of steels according to the chemical composition of 4
2.2. The composition, structure, properties and applications of n / y, and N / L steels 5
2.3. MATERIAL ITEMS 6
3. ASSEMBLY OF THE PRODUCT. ASSEMBLY PROCEDURE FOR WATER SUPPLY 8
3.1. Preparations for metal welding 8
2.2. Assembling structure 10
4. WELDING PIPE. Choosing the welding method and equipment. eleven
4.1. Select welding process 12
4.2. Selection of welding equipment 14
5. MATERIALS FOR WELDING. RATIONALE FOR SELECTION OF MATERIALS. 17
6. MODE WELDING. RATIONALE FOR SELECTION OF INDICATORS welding mode. 18
7. QUALITY CONTROL WELD 20
7.1. Visual inspection 20
7.2. Control joints 23
8. SAFETY DURING GAS WELDING 28
9. Conclusion 36
10. References 37
11. Annex 38