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TRANSCRIPT
Welding sequence for panel opening
Use FCAW welding process for minimum heatinputAlternatively use 2.5 dia electrode for SMAW process.Ensure no gap between tube to fin/shaped plate Always fit shaped plate at the centre of tubeAdequate prehehat should be done to avoid shrinkage/distortionAlways weld from center to outward direction to properly dissipate heatfirst and last tube of opening should be welded at last.