Standards

DB51/T 2972-2022 Abolished

DB51/T 2972-2022 The vacuum brazing process requirements for the structural components of automotive electronic devices

This document specifies the requirements for the vacuum brazing process of structural components of on-board electronic equipment. This document is applicable to the vacuum brazing of structural components of on-board electronic equipment made of aluminum and aluminum alloys, such as 1070A, 1060, 1050A, 1035, 1200, 8A06, 3A21, 6061, and 6063.

Publish Date: 2022-12-27

DB51/T 2973-2022 Abolished

DB51/T 2973-2022 The process quality control requirements for the aero-electrical system product using aramid paper honeycomb components

This document specifies the general requirements for process quality control of machining of honeycomb core parts made of phenolic resin aramid paper used in avionics system products. This document is applicable to the machining process of paper honeycomb sandwich panels and wave-absorbing honeycomb core parts used in avionics system products.

Publish Date: 2022-12-27

DB51/T 2974-2022 Abolished

DB51/T 2974-2022 The process quality control requirements for avionics system products made from PMI foam

This document specifies the process and quality control requirements for PMI foam used in avionics system products, as well as packaging and storage requirements. This document applies to PMI foam parts in avionics system products.

Publish Date: 2022-12-27

DB51/T 2975-2022 Active

DB51/T 2975-2022 Air-foam composite insulation and heat insulation material and system general technical specification

This document specifies the terms and definitions, performance requirements, test methods, inspection rules, marking, packaging, and storage for aerogel composite insulation materials and systems. This document is applicable to the production of aerogel composite insulation materials and the application of corresponding systems in railway, highway, bridge and tunnel construction, industrial and civil buildings, and other fields.

Publish Date: 2022-12-27

DB51/T 2976-2022 Active

DB51/T 2976-2022 Urban Nightscape Lighting Technical Specification

This document stipulates the design requirements, technical requirements, installation, operation and maintenance, and management of urban nightscape lighting. This document is applicable to the construction and management of nightscape lighting for urban buildings, structures, special landscape elements, commercial pedestrian streets, squares, parks, outdoor advertisements, and signs in Sichuan Province.

Publish Date: 2022-12-27

DB51/T 2977-2022 Active

DB51/T 2977-2022 Multi-functional lamp pole application technical specifications

This document stipulates the general principles, design requirements, management system requirements, equipment requirements, installation requirements, testing and commissioning, and operation and maintenance services for multi-functional light poles. This document is applicable to the application of multi-functional light poles in newly built, renovated, and expanded urban roads in Sichuan Province. Other related sites may also refer to and implement it under similar technical conditions. The design, installation, testing, and commissioning of multi-functional light poles, as well as their operation and maintenance services, shall comply with the provisions of this document and the relevant national standards currently in force.

Publish Date: 2022-12-27

DB51/T 2979-2022 Active

DB51/T 2979-2022 Mountainous areas in western Sichuan: Regulations for Nurturing Forests with Water-holding Capacity

This standard specifies the basic requirements and contents of the type classification, cultivation and transformation techniques, construction and acceptance, file construction and management of water conservation forests in the western mountainous areas of Sichuan. This standard is applicable to the cultivation operations of water conservation forests in the western mountainous areas of Sichuan.

Publish Date: 2022-12-27

DB51/T 2980-2022 Active

DB51/T 2980-2022 Fertilization Technology Specification for Forestry Waste Materials

This document stipulates the collection and transportation of forestry waste for fertilizer production, pre-processing of raw materials, fermentation, and fertilizer production. This document is applicable to the production of fertilizers from forestry waste in Sichuan Province.

Publish Date: 2022-12-27

DB51/T 2981-2022 Active

DB51/T 2981-2022

This standard specifies the technical requirements for the seed collection and storage, nursery site construction, field seedling cultivation, pest and disease control, seedling removal, and file management of Abies fargesii var. faxoniana. This standard is applicable to the cultivation of Abies fargesii var. faxoniana seedlings in the upper reaches of the Minjiang River basin and the high mountain valleys of western Sichuan Province.

Publish Date: 2022-12-27

DB51/T 2982-2022 Active

DB51/T 2982-2022 Forest management carbon contributions methodological guideline

This document stipulates the carbon measurement methods and monitoring procedures for forest management carbon offset projects. This document is applicable to the measurement and monitoring of forest management carbon sink and carbon offset projects within Sichuan Province.

Publish Date: 2022-12-27

DB51/T 2983-2022 Active

DB51/T 2983-2022 Five-leaved Maple Protection Technical Regulations

This document specifies the technical content of field return and translocation protection, including planting, management, and monitoring, in the protection of Acer negundo. This document is applicable to field return and translocation protection in the protection of Acer negundo.

Publish Date: 2022-12-27

DB51/T 2253-2022 Abolished

DB51/T 2253-2022

This document specifies the requirements for tissue culture seedling production, sowing seedling production, and technical archiving of Acer pentaphyllum Diels. This document is applicable to the tissue culture seedling and sowing seedling production of Acer pentaphyllum Diels in Sichuan Province.

Publish Date: 2022-12-27