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New changes in the performance requirements of international standard steel bars
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New changes in the performance requirements of international standard steel bars

Author:Hebei Zhuoxing Metal Wire Mesh Products Co., Ltd.  Source:www.zxfence.com Publication time:2016-9-16 Browse:

All the countries in the world have fully reflected the technical progress of the steel production and the new requirements of the construction industry. In the new version of the standard, there are many changes. Combing these requirements and changes, can provide some technical reference for the development of high strength steel in our country and the revision of the standard. These changes can be summarized in the following five aspects.

At present, foreign beauty, Britain, Germany and Japan, Russia, Australia / New Zealand (hereinafter referred to as Australia / New), European standard, international hot rolled ribbed steel bars were similar.

A) steel with ISO ISO 6935-2:2007 reinforced concrete (second parts: ribbed steel) is the standard big countries including 10 assorted cold dishes, for non welded steel grade, 11 grade steel for welding.

B)Japan's JIS G 3112:2004 for the reinforcement of concrete reinforced with Chinese GB 1499.2-2007 according to the international standard, but the steel grade is fixed according to requirements of the use of their own, there are some different rules in some specific indicators also.

C)European standard EN BS 10080:2005 and BS 4449:2005 is equal, all only provides the strength grade of 500MPa, but the integrity of the standard system, the standard is more scientific, the certification system and the inspection scheme it contains are adopted by all countries.

D) American Society for testing and materials has two standards: reinforced ribbed round steel bar, and light ASTM A706/A 706M-06a with reinforced concrete ribbed and round low-alloy steel reinforced by ASTM A 615/A 615M-08a reinforced concrete, their technical requirements are different, the ASTM A 615/A 615M-08a 280, 420, 520 and three a steel grade, no welding performance, there is no strong cuby requirements, delivery state is rolled, said it can use the heat treatment process of production. A706/A 706M-06a ASTM standard is only 420 a steel grade, not only has the requirements of the welding performance, but also has the lower limit of the yield strength requirements, is the high quality requirements of the steel bar.

E) Australia / New Zealand (hereinafter referred to as "Australia / new") AS/NZS 4671:2001 reinforced concrete set 250N, 300E, 500L, 500N, 500E five levels of steel, specified by the L for the lower level, N is an ordinary grade, E seismic grade is the first time in the standard clearly put forward to seismic reinforcement comprehensive technical requirements, the provisions of aseismic reinforcement standard of our country is referring to the provisions of the Australian / New Zealand standard.

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