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Standard
| DL/T 674-1999 The gradational standard of spherular pearlite for carbon steel No.20 used in fossil power plant (English Version) |
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Detail of DL/T 674-1999
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Introduction of DL/T 674-1999
本标准规定了火电厂用20号钢珠光体球化的评级方法。
本标准适用于按GB3087、GB5310标准供货的20号钢火电厂管道、管件在高温下长期使用后的珠光体球化等级评定，也适用于用20号钢钢板、条钢、型钢制造的构件在高温下长期使用后的珠光体球化等级评定。
其他与20号钢相类似的材料亦可参照执行。
Contents of DL/T 674-1999