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5th March 2015 - - 0 comments

Q: The Maximum Interpass temperature recorded on my BS EN ISO 15614-1 WPQR (S355 Carbon Steel MAG Butt Weld in Plate) is 229°C. Surely the welding Inspector has made a mistake...everyone knows it should be 250°C?

A: No mistake has been made. BS EN ISO 15614-1 para 8.4.10 states:

Interpass Temperature :The upper limit  of the qualification is the highest interpass temperature reached in the welding procedure test.

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