فن آوری جوش لوله دیوار نازک با قطر کوچک و فلنج گردن جوش فورج شده برج
Contents1. Raw materials and assembly quality requirements2. Pre-welding preparation3. Welding order and parameters4. Welding process and quality control5. Welding equipment6. Welding materials7. Conclusion This paper describes in detail the key welding technology of the butt circumferential weld between the small-diameter thin-walled steel pipe and the …