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GB 是 “国家标准” 的汉语拼音缩写，GB 标准是中国国家强制性标准。这些标准是为了保障国家安全、人身健康和安全、动植物生命和健康、环境保护、公共安全等方面的基本要求而制定的。
GB/T 是指推荐性国家标准。“T” 代表 “推荐”，它是在 GB 强制性标准的基础上，为了提高产品质量、促进技术进步等目的而制定的标准。这些标准不具有强制执行力，但在市场竞争和行业发展中却有着重要的引导作用。
Bahasa Inggris 6783
ASTM F1115
Bahasa Inggris 6783
Bahasa Inggris 15810
ASTM F2878
ASTM D3330
ASTM D1938
ASTM D374
ASTM D1424
Bahasa Inggris: GB/T 15267
GB 38995
GB 2637
