概述

Overview

角钢属建造用碳素结构钢，是简单断面的型钢钢材，主要用于金属构件及厂房的框架等。在使用中要求有较好的可焊性、塑性变形性能及一定的机械强度。生产角钢的原料钢坯为低碳方钢坯，成品角钢为热轧成形、正火或热轧状态交货。

Angle steel is a type of carbon structural steel used in construction, which is a simple section steel material mainly used for metal components and the frame of factories. Good weldability, plastic deformation performance, and certain mechanical strength are required during use. The raw steel billets for producing angle steel are low-carbon square steel billets, and the finished angle steel is delivered in hot-rolled, normalized, or hot-rolled state.

种类及规格

Types and specifications

主要分为等边角钢和不等边角钢两类，其中不等边角钢又可分为不等边等厚及不等边不等厚两种。

It is mainly divided into two types: equilateral angle steel and unequal angle steel. Among them, unequal angle steel can be further divided into two types: unequal angle steel with equal thickness and unequal angle steel with equal thickness.

角钢的规格用边长和边厚的尺寸表示。目前国产角钢规格为２—２０号，以边长的厘米数为号数，同一号角钢常有２—７种不同的边厚。进口角钢标明两边的实际尺寸及边厚并注明相关标准。一般边长１２.５cｍ以上的为大型角钢，１２.５cｍ—５cｍ之间的为中型角钢，边长５cｍ以下的为小型角钢。

The specifications of angle steel are represented by the dimensions of edge length and edge thickness. At present, the specifications of domestically produced angle steel are 2-20 centimeters, with the length of the side measured in centimeters as the number. The same angle steel often has 2-7 different edge thicknesses. Imported angle steel shall indicate the actual dimensions and edge thickness on both sides and relevant standards. Generally, the side length is 12 Large angle steel above 5cm, 12 Medium angle steel is between 5cm and 5cm, and small angle steel is below 5cm in length.

进出口角钢的定货一般以使用中所要求的规格为主，其钢号为相应的碳结钢钢号。也即角钢除了规格号之外，没有特定的成分和性能系列。

The ordering of inlet and outlet angle steel is generally based on the specifications required for use, and its steel grade is the corresponding carbon steel grade. That is to say, angle steel has no specific composition or performance series except for the specification number.

角钢的交货长度分定尺、倍尺两种，国产角钢的定尺选择范围根据规格号的不同有３—９ｍ、４—１２ｍ、４—１９ｍ、６—１９ｍ四个范围。日本产角钢的长度选择范围为６—１５ｍ。

The delivery length of angle steel is divided into two types: fixed length and double length. The selection range of fixed length for domestic angle steel is 3-9m, 4-12m, 4-19m, and 6-19m according to different specification numbers. The length selection range for angle steel produced in Japan is 6-15m.

不等边角钢的截面高度按不等边角钢的长边宽来计算。

The cross-sectional height of unequal angle steel is calculated based on the length and width of the unequal angle steel.

进出口情况

Import and export situation

我国进口、出口角钢各有一定批量，主要从日本、西欧进口。出口输往地区主要为港澳、东南亚、拉美及阿拉伯国家等。出口生产企业主要为辽宁、河北、北京、上海、天津等省市的钢铁厂（轧钢厂）。

China imports and exports a certain amount of angle steel, mainly from Japan and Western Europe. The main export destinations are Hong Kong, Macau, Southeast Asia, Latin America, and Arab countries. The main export production enterprises are steel mills (rolling mills) in provinces and cities such as Liaoning, Hebei, Beijing, Shanghai, and Tianjin.

进口角钢品种多为大型、小型角钢及特殊形状角钢，出口品种多为中型角钢如６号、７号等。

The imported angle steel varieties are mostly large, small, and special shaped angle steel, while the exported varieties are mostly medium-sized angle steel such as No. 6, No. 7, etc.

外观质量要求

Appearance quality requirements

角钢的表面质量在标准中有规定，一般要求不得存在使用上有害的缺陷，如分层、结疤、裂缝等。

The surface quality of angle steel is specified in the standard, and generally requires that there should be no harmful defects during use, such as delamination, scarring, cracks, etc.

角钢几何形状偏差的允许范围在标准中也有规定，一般包括弯曲度、边宽、边厚、顶角、理论重量等项，并规定角钢不得有显著的扭转。

The allowable range of geometric deviation of angle steel is also specified in the standard, generally including curvature, edge width, edge thickness, apex angle, theoretical weight, etc., and it is stipulated that angle steel shall not have significant torsion.

化学成分检验

Chemical composition testing

（１）成分指标：角钢的化学成分属一般结构用轧制钢材系列，主要检验指标为C、Ｍn、Ｐ、Ｓ四项。根据牌号不同，含量各有差别，大致范围为C＜０.２２%、Ｍn：０.３０—０.６５%、Ｐ＜０.０６０%、Ｓ＜０.０６０%。

(1) Composition indicators: The chemical composition of angle steel belongs to the general structural rolled steel series, and the main inspection indicators are C, Mn, P, and S. According to different grades, the content varies, roughly ranging from C<0 22%, Mn: 0 ３０—０. 65%, P<0 060%, S ＜ 0 060%.

（２）检验方法：检测上述化学成分时，常用的标准检验方法有ＧＢ２２３、ＪＩＳＧ１２１１—１２１５、ＢＳ１８３７、ＢＳ手册１９、ГОСТ２２５３６等。

(2) Inspection methods: When detecting the above chemical components, commonly used standard inspection methods include GB223, JISG1211-1215, BS1837, BS Manual 19, and ГОСТ 22536.

常用产品、规格标准

Common products, specification standards

ＧＢ/Ｔ２１０１—８９（型钢验收、包装、标志及质量证明书的一般规定）；ＧＢ９７８７—８８/ＧＢ９７８８—８８（热轧等边/不等边角钢尺寸、外形、重量及允许偏差）；ＪＩＳＧ３１９２—９４（热轧型钢的形状、尺寸、重量及其容许差）；ＤＩＮ１７１００—８０（普通结构钢质量标准）；ГОСТ５３５—８８（普通碳素型钢技术条件）。

GB/T2101-89 (General provisions for acceptance, packaging, marking and quality certificate of section steel); GB9787-88/GB9788-88 (Dimensions, Shape, Weight, and Allowable Deviation of Hot Rolled Equal/Unequal Edge Angle Steel); JISG3192-94 (Shape, Size, Weight, and Allowable Deviation of Hot Rolled Section Steel); DIN17100-80 (Quality Standard for Ordinary Structural Steel); ГОСТ 535-88 (Technical conditions for ordinary carbon steel sections).

根据上述标准规定，角钢应成捆交货、其捆扎道次、同捆长度等应符合规定。角钢一般属裸装交货，运输和储存均需注意防潮。

According to the above standards, angle steel should be delivered in bundles, and its bundling passes, bundling lengths, etc. should comply with the regulations. Angle steel is generally delivered naked, and moisture prevention should be taken into account during transportation and storage.

机械性能检验

Mechanical performance testing

（１）检验方法：

(1) Inspection method:

①拉伸试验方法。常用的标准检验方法有ＧＢ/Ｔ２２８-８７、ＪＩＳＺ２２０１、ＪＩＳＺ２２４１、ＡＳＴＭＡ３７０、ГОСТ１４９７、ＢＳ１８、ＤＩＮ５０１４５等；② 弯曲试验方法。常用的标准检验方法有ＧＢ/Ｔ２３２-８８、ＪＩＳＺ２２０４、ＪＩＳＺ２２４８、ＡＳＴＭE２９０、ГОСТ１４０１９、ＤＩＮ５０１１１等。

① Tensile testing method. The commonly used standard inspection methods include GB/T228-87, JISZ2201, JISZ2241, ASTMA370, ГОСТ 1497, BS18, DIN50145, etc Bending test method. The commonly used standard inspection methods include GB/T232-88, JISZ2204, JISZ2248, ASTME290, ГОСТ 14019, DIN50111, etc.

（２）性能指标：考核角钢性能的检验项目主要为拉伸试验和弯曲试验。指标包括屈服点、抗拉强度、延伸率及弯曲合格等项。

(2) Performance indicators: The inspection items for assessing the performance of angle steel mainly include tensile tests and bending tests. The indicators include yield point, tensile strength, elongation, and qualified bending.

本文的精彩内容来自: 济南型钢更多的详细内容请点击我们网站：http://www.jnhxtcg.com谢谢您的到来

The exciting content of this article comes from: Jinan Steel. For more detailed content, please click on our website: http://www.jnhxtcg.com Thank you for coming