Standards

GB/T 32825-2024 Active

GB/T 32825-2024 Technical parameters and requirements for three-phase dry-type tridimensional wound core power transformers

This document specifies the performance parameters, technical requirements, marking, packaging, transportation, and storage requirements of three-phase dry-type three-dimensional coil core power transformers (hereinafter referred to as "transformers"), and describes the inspection rules and methods.
This document applies to the manufacture of three-phase dry-type three-dimensional coil core power transformers with a rated capacity of 30 kVA or more, a rated frequency of 50 Hz, indoor use, a core material of electrical steel and amorphous alloy, and voltage levels of 6 kV, 10 kV, 20 kV, and 35 kV, which are used for no-load voltage regulation and on-load voltage regulation.

Publish Date: 2024-12-31

GB/T 27533-2024 Active

GB/T 27533-2024 Diagnostic techniques for canine parvovirus disease

This document describes the clinical diagnosis, sample collection, processing, and storage of canine parvovirus disease, as well as methods such as colloidal gold immunochromatography, virus isolation and identification, blood coagulation and blood coagulation inhibition tests, PCR, and fluorescent PCR.
This document is applicable to the diagnosis and monitoring of canine parvovirus disease.

Publish Date: 2024-12-31

GB/T 23713.1-2024 Active

GB/T 23713.1-2024 Condition monitoring and diagnostics of machines—Prognostics—Part 1:General guidelines

This document provides guidance for the application and development of forecasting processes, aiming to:
——Share the general concept of forecasting among developers, suppliers, users, and manufacturers;
——Help users determine the necessary data, characteristics, processes, and performance for accurate forecasting;
——Summarize the general methods and processes of forecasting development;
——Introduce the concept of forecasting to promote the development and training of future systems.
This document provides standardized terminology, definitions, data collection requirements, forecasting concepts, model guidelines, forecasting failures, deterioration models, and general guidance for forecasting processes in the field of machine condition monitoring and diagnosis.
This document is applicable to guidelines in the field of machine condition monitoring and diagnosis, including research on machine condition monitoring and diagnosis methods, the development of monitoring and diagnostic equipment, and predictive maintenance of equipment. It is also applicable to national standards that adopt other international normative documents and informative documents, such as technical reports.

Publish Date: 2024-12-31

GB/T 17925-2024 Active

GB/T 17925-2024 Practice for X-ray digital radioscopic examination of cylinder weld

This document specifies the requirements for digital radiography (DR) inspection of fusion welded joints in gas cylinders during the manufacturing process, including inspection techniques, equipment, processes, and image quality standards.
This document is applicable to DR inspections of fusion welded joints in gas cylinders made from steel and non-ferrous metals with a nominal thickness of 1.5 mm to 16.0 mm and a nominal diameter of 100 mm to 1,200 mm.
DR inspections of fusion welded joints in gas cylinders with similar specifications, dimensions, and materials, as well as in-service gas cylinders, can refer to this document for guidance.

Publish Date: 2024-12-31

GB/T 10816-2024 Active

GB/T 10816-2024 Zisha ware

This document provides information on the classification of Zisha pottery products, specifies the technical requirements for Zisha pottery, inspection rules, packaging, marking, transportation, and storage, and describes the corresponding test methods.
This document is applicable to the production, inspection, and sales of Zisha pottery products made from fine-grained, high-iron special clays, which are mainly reddish-brown in color, have a relatively hard texture, and good air permeability (among which, pot products are made by hand-splicing and inlay molding methods).

Publish Date: 2024-12-31

GB/T 45117-2024 Active

GB/T 45117-2024 Terminology work—Age-friendly—Basic vocabulary

This document defines the basic terms and definitions related to aging-friendly design, including universal terms, aging-friendly environments, aging-friendly services, aging-friendly facilities, and aging-friendly products.
This document is applicable to various fields related to aging-friendly work and aging-friendly renovation services, design, implementation, testing, application, and management.

Publish Date: 2024-12-31

GB/T 44808.3-2024 Active

GB/T 44808.3-2024 Ergonomics—Accessible design—Part 3:Sound pressure levels of spoken announcements for products and public address systems

This document specifies the method for determining the sound pressure level of voice announcements when the background noise is less than 80 dB. The method given in this document follows the guidelines of ISO/IEC Guide 71 and takes into account the hearing loss of the elderly to determine the sound pressure level of voice announcements. The sound pressure level of voice announcements specified in this document is applicable to products and public broadcasting systems. To enhance the accessibility and usability of products, voice announcements should not only be audible but also at a comfortable volume. This document applies to consumer products such as home appliances and information and communication technology services with voice announcement functions, as well as products serving ordinary users in indoor and outdoor public places such as train stations, airports, conference rooms, amusement parks, and markets. This document does not apply to products that provide private information, such as ATMs in public places. This document is applicable in the following cases: when the voice announcement speaker is close to the user, and the A-weighted sound pressure level of the background noise in the user's environment does not exceed 80 dB. This document is applicable to products that provide clear and audible voice announcements for users with normal hearing corresponding to their age in quiet and non-reflective acoustic environments. This document applies to recorded and synthesized voices. This document does not apply to products with automatic sound pressure level control systems that can compensate for the effects of time-varying environmental noise. This document does not apply to voice heard through headphones or close to the sound source, such as in-ear headphones specified in IEC 60268-7. This document only considers the audibility of voice, not the process of understanding it. This document does not apply to voice signals used in emergency situat

Publish Date: 2024-12-31

GB/T 23718.5-2024 Active

GB/T 23718.5-2024 Condition monitoring and diagnostics of machines—Requirements for qualification and assessment of personnel—Part 5:Lubricant laboratory technician/analyst

This document specifies the qualification and assessment requirements for personnel engaged in lubricant analysis for machine condition monitoring and diagnosis.
The certificates or declarations of conformity in this document will provide proof of the personal competence and qualifications of machine condition monitoring personnel engaged in lubricant analysis in laboratories, but they are not applicable to certain professional equipment or other specific situations.
This document stipulates three levels of personnel qualifications, which are divided according to technical scope.

Publish Date: 2024-12-31

GB/T 1346-2024 Active

GB/T 1346-2024 Test methods for water requirement of standard consistency,setting time and soundness of the portland cement

This document specifies the standard water content for cement, the setting time, and the testing method for volume stability mainly caused by free calcium oxide and other factors, including the principles, instruments and equipment, test water, test conditions, and measurement methods.
This document is applicable to the standard water content, setting time, and stability testing of general silicate cement.

Publish Date: 2024-12-31

GB 45185-2024 Active

GB 45185-2024 Optometry products—Safety technical specifications of finished spectacles

This document defines the terms and definitions of finished eyeglasses for ophthalmic products, stipulates the safety technical requirements, and describes the corresponding test methods.
This document is applicable to finished eyeglasses for ophthalmic products.

Publish Date: 2024-12-31

GB/T 45170-2024 Active

GB/T 45170-2024 General quality for ready-to-eat kelp products

This document specifies the requirements for raw materials and auxiliary materials, technical requirements, inspection rules, and labeling, packaging, transportation, and storage of ready-to-eat kelp products. It also describes the corresponding inspection methods and provides a product classification.
This document is applicable to the production, inspection, and sale of ready-to-eat kelp products.

Publish Date: 2024-12-31

GB/T 45166-2024 Active

GB/T 45166-2024 Non-destructive testing—Infrared thermpgraphic testing—General principles

This document sets out the general principles of infrared thermal imaging inspection in the field of industrial non-destructive testing (NDT).

Publish Date: 2024-12-31