Q/BQB 420-2023: Hot-dip zinc /zinc-iron/zinc-magnesium/zinc-aluminum-magnesium alloy coated steel sheet and strip

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Scope

This document specifies the requirements for terms and definitions, classification and
codes, dimensions, appearance, weight, technical requirements, inspection and testing,
packaging, marking and inspection documents of the hot-dip zinc /zinc-iron /zinc-
magnesium /zinc-aluminum-magnesium alloy coated steel sheet and strip (hereinafter
referred to as steel sheet and strip).
This document applies to steel sheet and strip, which has a thickness of 0.23 mm ~ 4.00
mm, as produced by Baoshan Iron and Steel Co., Ltd. They are mainly used to make
internal and external covering parts and structural parts in the automobile, construction,
home appliances and other industries.