·····················，········，，····················，，，····················，·································一 I 1 范 围 ····································，·····································，····································…… 1 2 规范性引用文件 ·，，，·································，····················，············」……，.·····……，二1 3 术语和定义 ·························，·······，，·····················································，········…… 1 4 订货内容 ···················，······································，·，···········································…… 2 5 制造工艺及交货状态 ··········，·········，············，，······················，，······..···一 ，，.· …，二2 6 分类和标记 ·········:2 7 技术要求 ······················，···································，·····，··············…… 3 8 外形允许偏差 ·，·····，························································，，，·····················，······……，二4 9 外形尺寸及截面特性 ·········································，···············，···················…… 6 10 交货重量及交货长度 “·······，············“····，···········‘····，。·············.·..··‘…，， 16 11 试验方法 ······················，···································，·····························，···········一· 16 12 验收规则 ························································，····················，···················…… 16 13 包装、标志和质量证明书···，·········，·，·········，·，········，·········.·.··……，17 附录A(资料性附录) 本标准产品屈服强度等级的国内外常用原料牌号对照表 ··················一· 18 附录B(资料性附录) 公称截面特性计算公式 ····，·，····，··························，····················…… 19

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