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GB standards are the China national standards; Prefix code GB are Mandatory standards, GB/T are Recommended standards; All products or service must be compliance with GB standards; If you want to export products or services to huge Chinese market, need ensure they are meet the requirements of GB china national standards;  We provide Chinese GB standards and English version GB standards  Lookup, Translate, Download, Imported Commodity GB standards Testing and Compliance review services.
  •  China "directly" GB Standards English PDF List:
  • Standard  Code Standard Title Standard Class Order
    GB/T 29047-2021 Prefabricated directly buried insulating pipes and fittings with polyurethane foamed-plastics and high density polyethylene casing pipes
    高密度聚乙烯外护管硬质聚氨酯泡沫塑料预制直埋保温管及管件
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    GB/T 17934.8-2021 Graphic technology—Process control for the production of half-tone colour separations, proof and production prints—Part 8:Validation print processes working directly from digital data
    印刷技术 网目调分色版、样张和生产印刷品的加工过程控制 第8部分:直接使用数字数据的验证印刷品制作过程
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    GB/T 17934.7-2021 Graphic technology—Process control for the production of half-tone colour separations,proof and production prints—Part 7:Proofing processes working directly from digital data
    印刷技术 网目调分色版、样张和生产印刷品的加工过程控制 第7部分:直接使用数字数据的打样过程
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    GB/T 21548-2021 Methods of measurement of the high speed semiconductor lasers directly modulated for optical fiber communication systems
    光通信用高速直接调制半导体激光器的测量方法
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    GB/T 38585-2020 Technical specification of joint assembling for directly buried insulated pipeline of urban heating
    城镇供热直埋管道接头保温技术条件
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    GB/T 39246-2020 Prefabricated directly buried insulating fittings with seamless high density polyethylene casing pipe
    高密度聚乙烯无缝外护管预制直埋保温管件
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    GB/T 37263-2018 Prefabricated directly buried insulating plastic-steel-plastic composite pipes with polyurethane [PUR]foamed-plastics and high density polyethylene [PE]casing pipes
    高密度聚乙烯外护管聚氨酯发泡预制直埋保温钢塑复合管
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    GB/T 35842-2018 Technical requirements for pre-insulated directly buried valve of urban heating
    城镇供热预制直埋保温阀门技术要求
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    GB/T 34611-2017 Rigid polyurethane spray polyethylene winding prefabricated directly buried insulating pipes
    硬质聚氨酯喷涂聚乙烯缠绕预制直埋保温管
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    GB/T 29047-2012 Prefabricated directly buried insulating pipes and fittings with polyurethane [PUR]foamed-plastics and high density polyethylene [PE]casing pipes
    高密度聚乙烯外护管硬质聚氨酯泡沫塑料预制直埋保温管及管件
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    GB/T 29046-2012 Test methods of technical specification for pre-insulated directly buried district heating pipes
    城镇供热预制直埋保温管道技术指标检测方法
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    GB/T 29233-2012 Singlemode optical fibre telecommunication cables for outdoor duct, directly buried, and lashed aerial application
    管道、直埋和非自承式架空敷设用单模通信室外光缆
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    GB/T 21548-2008 Methods of measurement of the high speed semiconductor lasers directly modulated for optical fiber communication systems
    光通信用高速直接调制半导体激光器的测量方法
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    GB/T 6663.1-2007 directly heated negative temperature coefficient thermistors - Part 1: Generic specification
    直热式负温度系数热敏电阻器 第1部分:总规范
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    GB/T 19385.2-2003 Textile machinery and accessories--Heald frames--Part 2:Heald-carrying rod fixed directly on the frame stave--Coordinated dimensions
    纺织机械与附件 综框 第2部分:穿综杆直接固定于综框横梁 相关尺寸
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    GB/T 7154.4-2003 Thermistors--directly heated positive step-function temperature coefficient--Part 1-4: Blank detail specification--Sensing application--Assessment level EZ
    直热式阶跃型正温度系数热敏电阻器 第1-4部分:敏感用空白详细规范 评定水平EZ
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    GB/T 7154.3-2003 Thermistors--directly heated positive step-function temperature coefficient--Part 1-3: Blank detail specification--Inrush current application--Assessment level EZ
    直热式阶跃型正温度系数热敏电阻器 第1-3部分:浪涌电流用空白详细规范 评定水平EZ
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    GB/T 7154.2-2003 Thermistors--directly heated positive step-function temperature coefficient--Part 1-2: Blank detail specification--Heating element application--Assessment level EZ
    直热式阶跃型正温度系数热敏电阻器 第1-2部分:加热元件用空白详细规范 评定水平EZ
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    GB/T 7154.1-2003 Thermistors--directly heated positive step-function temperature coefficient--Part 1-1:Blank detail specification for current limiting application--Assessment level EZ
    直热式阶跃型正温度系数热敏电阻器 第1-1部分:限流用空白详细规范 评定水平EZ
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    GB/T 7153-2002 directly heated positive step-function temperature coefficient thermistors--Part 1:Generic specification
    直热式阶跃型正温度系数热敏电阻器 第1部分:总规范
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