民用建筑天然气装置用镀锌钢管的均匀性评价

IF 1.6 Q3 ENGINEERING, CIVIL Australian Journal of Civil Engineering Pub Date : 2021-11-17 DOI:10.1080/14488353.2021.2002523
F. Mainier, Rodolfo Gomes Shamá Dos Santos, R. J. Mainier
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引用次数: 0

摘要

摘要:巴西一些住宅和商业建筑的天然气分配器使用的镀锌钢管和配件是通过热浸镀锌工艺制造的,该工艺得到了巴西标准规范的支持。锌涂层是最广泛使用的防腐方法之一。因此,国家和国际管道制造商以及民用建筑中的安装和维护公司也必须符合规定的国家和国际标准,尤其是当管道和配件用于住宅中的天然气时。通过锌涂层的硫酸铜溶液测试(g/m2)进行描述、表征和比较,并使用金相分析在锌层中可能出现缺陷。考虑到硫酸铜溶液测试不仅评估均匀性,还评估镀锌钢构件涂层的孔隙率,巴西市场上的一些管道不符合标准。巴西标准至少拒绝了70%的试样。
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Evaluation of uniformity on zinc-coated (galvanised) steel pipes applied to natural gas installations in civil construction
ABSTRACT Some natural gas distributors for residential and commercial buildings in Brazil use galvanised steel tubes and fittings manufactured by the hot-dip zinc process that is supported by the specifications contained in the Brazilian Standards. Zinc coating is one of the most widely used methods to provide protection against corrosion. It is therefore essential that national and international tube manufacturers and installation and maintenance companies in civil construction also meet the defined national and international standards, especially when the tubes and fittings are used for natural gas in residential buildings. Descriptions, characterisations, and comparisons are made by the Copper Sulphate Solution test of the zinc coating (g/m2), and defects can occur in the zinc layer using metallographic analysis. Considering that the Copper Sulphate Solution test not only evaluates the uniformity but also assesses the porosity of the coating on galvanised steel elements, some pipes available in the Brazilian market do not comply with the standards. At least 70% of the test specimens were rejected by the Brazilian standards.
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来源期刊
CiteScore
3.90
自引率
7.70%
发文量
31
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