HG/T 20637.2-2017 代替 HG/T 20637.2-1998 自控专业工程设计用图形符号和文字代号
HG/T 20637.2-2017.Symbols and identification for instrumentation engineering des...
行业标准2023.08.16
HG/T 20637.2-2017.Symbols and identification for instrumentation engineering des...
行业标准2023.08.16
HG/T 20637.3-2017.Preparation of instrumentation general specification.1总则1.0.1...
行业标准2023.08.16
HG/T 20637.4-201 7.Preparation of instrumentation design instruction.1总则1.0.1 为了...
行业标准2023.08.16
HG/T 20637.5-2017.Preparation of instrument requisition.1总则1.0.1 制订HG/T 20637.5的...
行业标准2023.08.16
HG/T 20637.6-2017.Preparation of instrumentation specification.1总则1.0.1为使仪表技术说明书...
行业标准2023.08.16
HG/T 20637.7-2017.Materials take- off of instrumentation.1总则1.0.1HG/T 20637.7是 为...
行业标准2023.08.16
HG/T 20637.8-2017.Numbering of auxiliary equipment and cable.1总则1.0.1 HG/T 20637...
行业标准2023.08.16
HG/T 5484-2018.Fluorescent whitening agent OB-3.1范围HG/T 5484规定了荧光增白剂OB-3产品的要求、采样...
行业标准2023.08.16
HG/T 5485-2018.2-Methoxy- 5-methylaniline-4-sulfonylethyl hydrogen sulfate ester...
行业标准2023.08.16
HG/T 5486-2018.2-Cyano-4-nitro-6-bromoaniline.1范围HG/T 5486规定了2-氰基-4-硝基-6-溴苯胺的要求、...
行业标准2023.08.16