What is preheating in welding? Why is preheating required? And how should preheating be done correctly? Weldfabworld.com In this video, we explain preheating in simple, practical terms using real workshop examples. You’ll understand how preheating controls hydrogen, reduces cooling rate, prevents cracking, and improves weld life. We cover when preheating is required, how material thickness, carbon equivalent, ambient temperature, and welding process affect preheat, and common mistakes welders ma
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