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English Translations » 【静设备】 » Issues regarding J422 welding electrodes for glass-lined pre

Issues regarding J422 welding electrodes for glass-lined pressure vessels

2017-02-21View Original

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The new welding code for pressure vessels, NB/T47015-2011, recommends the use of electrodes J426 or J427 for welding Q235B steel plates. Can J422 still be used? Based on the experience in the glass lining industry, the J422 electrode has good shape and few pores; it requires relatively lower skills from welders, and it helps ensure better quality during the lining process. Q235B steel plates are widely used in glass-lined equipment. Is there now a regulation prohibiting the use of J422 for welding Q235B steel plates?
Reply #22017-02-21
I think J422 can be used as long as it is supported by process qualification

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Translated at 2026-07-21 03:07:00

Original: https://bbs.hcbbs.com/thread-1726531-1-1.html

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