Carbon steel welding

[vnb...@gmail.com]

Gents,

We have a 24" pipe rolled from SA 516 Gr 70, 6 mm thick as the pressure inside is 1.2 kg/ cm2 at 423 degree C flue gases.

For support we are welding saddle (RF pad) of IS 2062 Gr A, 8 mm thick. Theoretically it is CS to CS welding. Question is does our CS to CS WPS PQR okay or we need to create one. 

Highly appreciate useful guidance.

Regards,

Vinod Bhatt.

[Dharmendrakumar Labhala]

Refer ASME IX QW 451.4

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