GB/T 25052-2024連續(xù)熱浸鍍層鋼板和鋼帶尺寸、外形、重量及允許偏差

ICS

77.140.50

CCS

H46

中華人民共和國國家標準

GB/T25052—2024

代替GB/T25052—2010

連續(xù)熱浸鍍層鋼板和鋼帶尺寸、

外形、重量及允許偏差

Dimension,shape,weightandtolerancefor

continuouslyhot-dipcoatedsteelsheetandstrip

2024-08-23發(fā)布2025-03-01實施

國家市場監(jiān)督管理總局發(fā)布

國家標準化管理委員會

GB/T25052—2024

目次

前言

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Ⅲ

1

范圍

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2

規(guī)范性引用文件

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3

術(shù)語和定義

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4

分類和代號

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5

尺寸

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5.1

尺寸范圍

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5.2

推薦的公稱尺寸

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6

尺寸允許偏差

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6.1

厚度允許偏差

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6.2

寬度允許偏差

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6.3

長度允許偏差

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7

外形

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7.1

不平度

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7.2

鐮刀彎

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7.3

脫方度

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7.4

塔形

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8

尺寸及外形的測量

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8.1

厚度

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8.2

寬度

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8.3

長度

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8.4

不平度

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8.5

鐮刀彎

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8.6

脫方度

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9

重量

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10

數(shù)值修約

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11

參考文獻

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Ⅰ

GB/T25052—2024

前言

本文件按照GB/T1.1—2020《標準化工作導則第1部分：標準化文件的結(jié)構(gòu)和起草規(guī)則》的規(guī)

定起草。

本文件代替GB/T25052—2010《連續(xù)熱浸鍍層鋼板和鋼帶尺寸、外形、重量及允許偏差》，與

GB/T25052—2010文件相比，除結(jié)構(gòu)調(diào)整和編輯性改動外，主要技術(shù)變化如下：

a）刪除了范圍中的注釋（2010年版的第1章）；

b）增加了術(shù)語和定義（見第3章）；

c）更改了寬鋼帶、鋼板及縱切鋼帶的尺寸精度分類，將“高級”改為“較高”（見4.2、表2～

表9，2010年版的3.1、表1～表9）；

d）增加了產(chǎn)品形態(tài)所對應(yīng)的尺寸和不平度精度分類（見表1）；

e）增加了對寬鋼帶、鋼板及縱切鋼帶的公稱寬度上限的要求（見5.1.2）；

f）增加了對鋼板的公稱長度上下限的要求（見5.1.3）；

g）增加了對寬鋼帶、鋼板及縱切鋼帶推薦的公稱尺寸的要求（見5.2）；

h）更改了對寬鋼帶、鋼板及縱切鋼帶的厚度允許偏差的要求（見表2～表5，2010年版的表1～

表4）；

i）更改了對最小屈服強度數(shù)值小于260MPa、公稱厚度數(shù)值3.0mm～6.5mm鋼板的不平度的要

求（見表9，2010年版的表8和表9）；

j）更改了對最小屈服強度數(shù)值不小于360MPa鋼板的不平度的要求（見表9，2010年版的4.4.3）；

k）更改了縱切鋼帶鐮刀彎的要求（見7.2，2010年版的4.5）；

l）增加了對鋼板鐮刀彎的要求（見7.2）；

m）增加了對寬鋼帶及縱切鋼帶塔形的要求（見7.4）；

n）刪除了對鋼板切斜的要求（見2010年版的4.6）；

o）更改了對寬鋼帶、鋼板及縱切鋼帶尺寸及外形的測量要求（見第8章，2010年版的第6章）；

p）更改了鍍層公稱厚度的計算公式（見9.3，2010年版的5.2.1）；

q）增加了鍍層密度的要求（見9.4）。

請注意本文件的某些內(nèi)容可能涉及專利。本文件的發(fā)布機構(gòu)不承擔識別專利的責任。

本文件由中國鋼鐵工業(yè)協(xié)會提出。

本文件由全國鋼標準化技術(shù)委員會（SAC/TC183）歸口。

本文件起草單位：本鋼板材股份有限公司、廣西柳州鋼鐵集團有限公司、山東匯金彩鋼有限公司、

濰坊東方鋼管有限公司、吉林建龍鋼鐵有限責任公司、天津市新天鋼冷軋薄板有限公司、寧夏建龍?zhí)劁?/p>

有限公司、冶金工業(yè)信息標準研究院、靖江新舟合金材料有限公司、首鋼集團有限公司、河北鑫鵬通信

設(shè)備有限公司、河北鴻宇通信器材有限公司、任丘市恒威通信設(shè)備有限公司、任丘市凱華通訊電力器材

有限公司、河間市瀛州電信器材有限公司、河北宏聯(lián)通訊設(shè)備有限公司、鞍鋼股份有限公司。

本文件主要起草人：黃建國、李巖、付東賀、孫夢寒、蔣才靈、于永前、陳世波、蔣憲勛、

白軍明、汪世峰、孫鈞、劉君、楊歡杰、閆航飛、張硯舟、馬兵振、閆少帥、周亞磊、黃作為、

周博文、韓寶森、趙明印、高吉、郭萬平、伍永銳、姜勇、王崇學、李倩、田子健、劉章滿、孫向東、

張維旭。

本文件于2010年首次發(fā)布，本次為第一次修訂。

Ⅲ

GB/T25052—2024

連續(xù)熱浸鍍層鋼板和鋼帶尺寸、

外形、重量及允許偏差

1范圍

本文件規(guī)定了連續(xù)熱浸鍍層鋼板和鋼帶的分類和代號、尺寸、尺寸允許偏差、外形、尺寸及外形的

測量、重量和數(shù)值修約。

本文件適用于公稱厚度不大于6.5mm的連續(xù)熱浸鍍層寬鋼帶及其剪切鋼板（以下簡稱