How we build a galvanizing kettle
Four things are fixed before the kettle ever sees zinc, and none of them can be corrected afterwards. These pages are about those four.
Most kettle suppliers describe their product. We would rather describe the decisions, because the decisions are what you are actually buying — and because they are checkable.
Plate verification → cutting and bevelling → warm forming (850–900 °C) → fit-up → electroslag welding → stress relief → NDT → blast cleaning → painting → marking → despatch
Steel specification
Why silicon matters more than strength, and why there is no equivalent EN or ASTM grade for kettle plate.
Read more →02Electroslag welding
ISO 4063 process 72. Full wall thickness in a single pass — and an honest note about what the process costs you.
Read more →03Warm forming
All plate deformation at 850–900 °C. Cold bending locks stress into a vessel that will run at 450 °C for years.
Read more →04Quality control and NDT
GB/T 11345-2023 is identical to ISO 17640:2018. Here is the full inspection and test plan, and the standards mapped onto references your inspectors know.
Read more →05Documentation package
Five documents with every kettle. The fifth is the reason the other four matter.
Read more →Have a technical question?
If you are not buying yet and just want an answer — about kettle life, weld silicon, commissioning or sizing — email us. We will answer it.