New Welding Qualifications (PQRs) at J de Jonge

4 min read time

We recently qualified several new PQRs, bringing our database to 600+ procedures and strengthening our capabilities in high-temperature and cryogenic applications.

 

🔥 ASTM A335 P22 à Creep-Resistant Steels
Material used for high-temperature applications (>350 °C), such as boilers and piping successfully qualified without PWHT,  enabling significant cost savings and shorter project lead times.

 

❄️ ASTM A333 Gr. 3 à Nickel-Alloyed Carbon Steel for Low-temperature Applications
Suitable for service down to –120 °C. Used in cold conditions, such as LNG, industrial gas storage and low-temperature process systems (e.g. ammonia, ethylene)

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