We used Hihalloween for TIG welding of Inconel 625 pressure piping on a chemical plant retrofit. The joints passed ultrasonic phased array testing on the first pass. The team communicated the preheat and interpass temperature limits clearly. After one month of service at 650°C, no creep deformation was observed. The certification package included full weld maps and PAUT scan reports. This level of documentation saved us during an audit.
March 15, 2025 A Review After the First MonthSetting up the SAW parameters for our heavy-wall superalloy vessel was a challenge. The Hihalloween team sent a welding engineer on-site to adjust the flux layer height and travel speed. We ran a mock-up coupon before production. The final weld metal chemistry matched the PQR within 0.02% for carbon and chromium. The slag lifted cleanly, and the bead profile required minimal grinding. Practical, no-nonsense support.
February 28, 2025This was our second project with Hihalloween. The first was a small-batch TIG job; this time we needed full-length SAW seams on a 30-meter pressure vessel. They remembered our preferred filler metal brand and the exact PAUT calibration block we used before. The project came in three days ahead of schedule. The returning client experience felt seamless because they kept our previous weld data on file.
January 10, 2025Tell us how our TIG and SAW services performed on your high-nickel piping.
The Inconel 625 TIG wire produced clean, porosity-free beads on our creep-resistant header. Phased array showed zero linear indications.
SAW flux gave consistent arc stability on heavy-wall superalloy. Slag lifted cleanly. Only minor spatter on the root pass.
Calibration block matched our alloy chemistry exactly. UT time-of-flight readings were repeatable within 2% across three inspectors.