GB/T 25052-2024 连续热浸镀层钢板和钢带尺寸、外形、重量及允许偏差

ICS

77.140.50

CCS

H46

中华人民共和国国家标准

GB/T25052—2024

代替GB/T25052—2010

连续热浸镀层钢板和钢带尺寸、

外形、重量及允许偏差

Dimension,shape,weightandtolerancefor

continuouslyhot-dipcoatedsteelsheetandstrip

2024-08-23发布2025-03-01实施

国家市场监督管理总局发布

国家标准化管理委员会

GB/T25052—2024

目次

前言

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Ⅲ

1

范围

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2

规范性引用文件

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1

3

术语和定义

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1

4

分类和代号

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1

5

尺寸

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2

5.1

尺寸范围

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2

5.2

推荐的公称尺寸

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2

6

尺寸允许偏差

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2

6.1

厚度允许偏差

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2

6.2

宽度允许偏差

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5

6.3

长度允许偏差

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7

外形

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7

7.1

不平度

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7

7.2

镰刀弯

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7

7.3

脱方度

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7

7.4

塔形

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8

尺寸及外形的测量

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8

8.1

厚度

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8

8.2

宽度

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8

8.3

长度

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8

8.4

不平度

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8

8.5

镰刀弯

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8

8.6

脱方度

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9

9

重量

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10

数值修约

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11

参考文献

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12

Ⅰ

GB/T25052—2024

前言

本文件按照GB/T1.1—2020《标准化工作导则第1部分：标准化文件的结构和起草规则》的规

定起草。

本文件代替GB/T25052—2010《连续热浸镀层钢板和钢带尺寸、外形、重量及允许偏差》，与

GB/T25052—2010文件相比，除结构调整和编辑性改动外，主要技术变化如下：

a）删除了范围中的注释（2010年版的第1章）；

b）增加了术语和定义（见第3章）；

c）更改了宽钢带、钢板及纵切钢带的尺寸精度分类，将“高级”改为“较高”（见4.2、表2～

表9，2010年版的3.1、表1～表9）；

d）增加了产品形态所对应的尺寸和不平度精度分类（见表1）；

e）增加了对宽钢带、钢板及纵切钢带的公称宽度上限的要求（见5.1.2）；

f）增加了对钢板的公称长度上下限的要求（见5.1.3）；

g）增加了对宽钢带、钢板及纵切钢带推荐的公称尺寸的要求（见5.2）；

h）更改了对宽钢带、钢板及纵切钢带的厚度允许偏差的要求（见表2～表5，2010年版的表1～

表4）；

i）更改了对最小屈服强度数值小于260MPa、公称厚度数值3.0mm～6.5mm钢板的不平度的要

求（见表9，2010年版的表8和表9）；

j）更改了对最小屈服强度数值不小于360MPa钢板的不平度的要求（见表9，2010年版的4.4.3）；

k）更改了纵切钢带镰刀弯的要求（见7.2，2010年版的4.5）；

l）增加了对钢板镰刀弯的要求（见7.2）；

m）增加了对宽钢带及纵切钢带塔形的要求（见7.4）；

n）删除了对钢板切斜的要求（见2010年版的4.6）；

o）更改了对宽钢带、钢板及纵切钢带尺寸及外形的测量要求（见第8章，2010年版的第6章）；

p）更改了镀层公称厚度的计算公式（见9.3，2010年版的5.2.1）；

q）增加了镀层密度的要求（见9.4）。

请注意本文件的某些内容可能涉及专利。本文件的发布机构不承担识别专利的责任。

本文件由中国钢铁工业协会提出。

本文件由全国钢标准化技术委员会（SAC/TC183）归口。

本文件起草单位：本钢板材股份有限公司、广西柳州钢铁集团有限公司、山东汇金彩钢有限公司、

潍坊东方钢管有限公司、吉林建龙钢铁有限责任公司、天津市新天钢冷轧薄板有限公司、宁夏建龙特钢

有限公司、冶金工业信息标准研究院、靖江新舟合金材料有限公司、首钢集团有限公司、河北鑫鹏通信

设备有限公司、河北鸿宇通信器材有限公司、任丘市恒威通信设备有限公司、任丘市凯华通讯电力器材

有限公司、河间市瀛州电信器材有限公司、河北宏联通讯设备有限公司、鞍钢股份有限公司。

本文件主要起草人：黄建国、李岩、付东贺、孙梦寒、蒋才灵、于永前、陈世波、蒋宪勋、

白军明、汪世峰、孙钧、刘君、杨欢杰、闫航飞、张砚舟、马兵振、闫少帅、周亚磊、黄作为、

周博文、韩宝森、赵明印、高吉、郭万平、伍永锐、姜勇、王崇学、李倩、田子健、刘章满、孙向东、

张维旭。

本文件于2010年首次发布，本次为第一次修订。

Ⅲ

GB/T25052—2024

连续热浸镀层钢板和钢带尺寸、

外形、重量及允许偏差

1范围

本文件规定了连续热浸镀层钢板和钢带的分类和代号、尺寸、尺寸允许偏差、外形、尺寸及外形的

测量、重量和数值修约。

本文件适用于公称厚度不大于6.5mm的连续热浸镀层宽钢带及其剪切钢板（以下简称钢板）、纵切

钢带。

2规范性引用文件

下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中，注日期的引用文

件，仅该日期对应的版本适用于本文件；不注日期的引用文件，其最新版本（包括所有的修改单）适用

于本文件。

GB/T8170数值修约规则与极限数值的表示和判定

3术语和定义

下列术语和定义适用于本文件。

3.1

宽钢带widestrip

轧制宽度不小于600mm，并成卷交货的钢带。

[来源：GB/T708—2019，3.1]

3.2

纵切钢带slitwidestrip

由宽钢带（3.1）纵切而成，并成卷交货的钢带。

[来源：GB/T708—2019，3.2]

3.3

公称厚度nominal(specified)thickness

镀层产品的订货厚度。

注：公称厚度包括基板厚度和镀层厚度。

4分类和代号

4.1按边缘状态分类及代号如下：

a）切边，EC；

b）不切边，EM。

4.2按尺寸精度分类及代号如下：

a）普通厚度精度，PT.A；

b）较高厚度精度，PT.B；

1

GB/T25052—2024

c）普通宽度精度，PW.A；

d）较高宽度精度，PW.B；

e）普通长度精度，PL.A；

f）较高长度精度，PL.B。

4.3按不平度精度分类及代号如下：

a）普通不平度精度，PF.A；

b）较高不平度精度，PF.B。

4.4产品形态所对应的尺寸精度和不平度精度的分类见表1。

表1产品形态所对应的尺寸和不平度精度分类

分类及代号

产品形态

边缘状态厚度精度宽度精度长度精度不平度精度

不切边EMPT.APT.B——————

宽钢带

切边ECPT.APT.BPW.APW.B————

不切边EMPT.APT.B——PL.APL.BPF.APF.B

钢板

切边ECPT.APT.BPW.APW.BPL.APL.BPF.APF.B

纵切钢带切边ECPT.APT.BPW.APW.B————

5尺寸

5.1尺寸范围

5.1.1宽钢带、钢板及纵切钢带的公称厚度不大于6.50mm。

5.1.2宽钢带、钢板及纵切钢带的公称宽度不大于2080mm。

5.1.3钢板的公称长度1000mm～8000mm。

5.2推荐的公称尺寸

5.2.1宽钢带、钢板及纵切钢带的公称厚度在5.1所规定范围内，公称厚度小于1.00mm的钢板及钢带

按0.05mm倍数的任何尺寸；公称厚度不小于1.00mm的钢板及钢带按0.10mm倍数的任何尺寸。

5.2.2宽钢带、钢板及纵切钢带的公称宽度，按10mm倍数的任何尺寸。

5.2.3钢板的公称长度在5.1所规定范围内，按50mm倍数的任何尺寸。

5.2.4根据需方要求，经供需双方协商，可以供应其他尺寸的宽钢带、钢板及纵切钢带。

6尺寸允许偏差

6.1厚度允许偏差

6.1.1规定最小屈服强度小于260MPa宽钢带、钢板及纵切钢带的厚度允许偏差应符合表2的规定。

2

GB/T25052—2024

表2规定最小屈服强度（Re）小于260MPa宽钢带、钢板及纵切钢带的厚度允许偏差

单位为毫米

厚度允许偏差

普通精度PT.A较高精度P