Q/BQB 660-2019: High strength steel plates for pressure vessels

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Scope

This Standard specifies the dimension, shape, technical requirements, inspections and
tests, marks and quality certificates of high-strength thick steel plates for pressure
vessels.
This Standard is applicable to high-strength thick steel plates for pressure vessels with
high heat input welding (welding heat input ≤100kJ/cm) and low welding crack
sensitivity produced by Baoshan Iron and Steel Co., Ltd.