PWHT, or Post-Weld Heat Treatment, is a process for piping that involves heating a welded joint to a specific temperature for a set time and then cooling it slowly. Its main purpose is to relieve the internal stresses and microstructure changes caused by welding, which helps prevent cracking and improves the material's toughness, strength, and ductility. The pipe being pwht is as per line class regardless of thickness, it is being designated in the drawing. PWHT - YES #constructionlife #construc
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🔥 Complete PWHT Process – From Raw Welds to Controlled Cooling! 🔥 Here’s a full demonstration of the Post Weld Heat Treatment (PWHT) process for a 2-inch spool with 1-inch socket welds connected to small valves. You’ll see every stage: 1️⃣ Before PWHT – freshly welded joints ready for treatment. 2️⃣ Heater Installation – heaters fixed carefully on all 3 joints. 3️⃣ Insulation Setup – applied to maintain uniform heat distribution. 4️⃣ Chart Monitoring – showing the temperature drop phase after
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