Angle iron 2101116331

Angle is constructed with carbon steel, is a simple section of the steel rolled steel, mainly used for metal components and factories frameworks. 、一 In use requires a good weldability, plastic deformation and certain mechanical strength. 、 Angle of the raw material for the production of low-carbon square steel billet steel billet, finished angle for the hot rolling, normalizing or hot-rolled state delivery.

1. 1. Types and specifications are divided into equilateral angle and unequal angle steel types, which can be divided into equilateral equilateral angle steel thickness and thickness ranging from two equilateral.

Angle with a side length of the specification and the size of said thick edge. The current specifications for the 2-20 domestic angle to the side of an cm number of numbers, the same number of different angles often 2-7 edge thickness. Import angle marked on both sides of the actual size and edge thickness and indicate the relevant standards. 一.c.c—cc Side length of 12.5cm or more generally for large angle, 12.5cm-5cm for the medium-angle between the side length of 5cm below for small angles. ” Specific standards such as "7" set.

一 Export angle of orders generally required the use specifications in the main, the steel structural steel for the corresponding carbon steel. Angle in addition to standard number that is, there is no specific composition and performance series.

Sub-cut-angle delivery length, two lengths, made the cut-angle range of options under the specifications of the different numbers have 3-9m ,4-12m ,4-19m ,6-19m four areas. — Made in Japan choose the length of angle iron range 6-15 m.

2. 2. Imports and exports of China's import and export a certain angle each batch, mainly from Japan, Western Europe imports. 、、 Exporting areas are mainly Hong Kong and Macao, Southeast Asia, Latin America and the Arab countries, etc.. Mainly for export production enterprises in Liaoning, Hebei, Beijing, Shanghai, Tianjin and other cities of the steel mills (rolling mill).

、、 Angle for the large variety of imports, small angle and special shape angle, export varieties for the medium-angle such as 6, 7, and so on.

3. 3. Exterior angle of the surface quality requirements of the quality of the standard provisions that may not exist generally require the use of harmful defects such as delamination, scarring, and cracks.

Angle geometry to allow the range of the standard deviation is also provided, generally include curvature, edge width, border thickness, angle, theoretical weight of other items, and provides a significant angle not reversed. ” Specific values, see "7" set the standard.

4.C、n 4. Chemical Component Testing (1) component indicators: angle of the chemical composition of a general structural rolled steel series, the main test target for the C, Mn, P, S 4. C＜ .%、n：.—.%、＜.%、＜.% According to different grades, the content varies, generally ranging from C <0.22%, Mn :0.30-0 .65%, P <0.060%, S <0.060%. ——8 See Table 6-7-8.

(2) Test method: detection of the chemical composition, the commonly used standard test methods GB223, JISG1211-1215, BS1837, BS Handbook 19, 22536 so.