Can pressure vessels use hot-rolled and explosion-hot-rolled composite steel plates?
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GB/T150-2011 only references NB/T47002-2009 for explosive clad steel plates. Hot-rolled composite steel plates and explosion-rolling composite steel plates were not cited. Can hot-rolled composite steel plates and explosion-hot-rolled composite steel plates be used in practice? Is a technical evaluation required if it can be used?
First, there must be material standards, and these standards need to pass a technical review. For domestic standard materials not referenced in GB150, which are used for pressure-bearing components of pressure vessels, it is generally necessary to file them with the General Administration for Quality Supervision, Inspection and Quarantine; otherwise, the Special Equipment Inspection Institute will not give approval. For foreign standard materials not referenced in GB150, there are already regulations regarding tolerance limits.
It’s best not to use it. The procedures are complicated, and it’s difficult to control the quality.
The NB/T47002 standard is under revision, and the revised standard will include rolled composites.
Some manufacturers’ rolled composite steel plates have passed the technical evaluation, and this information is available on the Rongbiao Commission’s website