Yes, PWHT is a requirement for Low alloy but not for Carbon steel. PWHT requirement for Low alloy is "heat upto 630-660 deg C and hold for 1hr and cool down to 400 deg C in controlled way and cooling to ambient should be done under insulation
On Mon, Jul 29, 2024 at 9:21 AM Vishwas Keskar <vvkeskar123@gmail.com> wrote:
Let us know the production weld condition to respond to your query--The query can not be answered in isolationIs PWHT is applicable ?If yes PWHT Parameters?"Equipment service conditions?Sent from my iPhoneOn 28 Jul 2024, at 11:34 PM, Talha Aamir <aamirtalha01@gmail.com> wrote:Hi,--I hope you are all very well.I wanted to know the reason behind why we use inconnect and E309L electrodes for buttering? what is the reason behind using those? Suppose a dissimilar weld between low alloy and carbon steel. We do buttering of inconnel on Low alloy metal.
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