Dear Experts,
We need to make a manifold for heater of size 60" and 40" diameter of P22 material. It has been decided to use A387 plate for making the manifold.
1. Can anyone give details of What is Step Cooling test connected with this material and what are the requirements of the step cooling test relating to qualification of WPS/PQR.
2.Can we use ER90B3 and E9018B3. Also the Joint configuraiton is Double V groove with backgouging as per client requirements.
3.How much length of plate to be used for preparing the PQR to perform the step cooling test.
4. Further, we have a extruded branch connection of size 4", 5" and 6" of material A 335 Gr.P9, thickness around 7.11. What electrode can we use for this purpose? Do we need to perform the same Step cooling test for this WPS/PQR?
Kindly suggest.
Thanks and regards,
Siva
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