组合使用关键词、标准类型、状态与 ICS 分类，快速定位所需国家标准。
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GB/T 6567.5-2003
Graphical symbols for piping systems--Axonometric representation of graphical symbols for piping，piping accessories and valves etc
GB/T 4459.4-2003
Mechanical drawings--Conventional reprensentationof springs
GB/T 4459.2-2003
Mechanical drawings--Conventional representation of gears
GB/T 4458.5-2003
Mechanical drawings--Indication of tolerances for size and of fits
GB/T 4458.4-2003
Mechanical drawings--Dimensioning
GB/T 4458.2-2003
Mechanical drawings--Item references and its arrangement for assembling drawings