Gb T 28181 2022 Translated English Of Chinese Standard Gb T 28181 2022 Gbt28181 2022

This document specifies the peer-to-peer networking structure of the video surveillance networking system for public security (hereinafter referred to as "surveillance networking system"), the basic requirements and security requirements for transmission, exchange, and control, as well as the technical requirements for control, transmission process, and protocol interface. This document is applicable to the scheme design, system testing, acceptance and related device development and production of the video surveillance networking system for public security. Other video surveillance networking systems can be implemented by using this document as reference.

This document specifies the methods of the cutting, preparation and determination of free cementite, pearlite and Widmanstaten structure specimens in steel. This document is applicable to the determination of free cementite, pearlite and Widmanstaten structure in low-carbon and medium-carbon steel plates, steel strips and steel rods (billets). For other steel types, this document may be taken as a reference.

This document specifies the technical requirements for numbering, barcode representation, barcode symbols of global service relation numbers and service relation instance numbers. This document is applicable to the identification, automatic identification, data collection of service-related parties and service relation instances.

This document specifies the dimensioning and tolerancing methods of non-rigid parts; and the drawing indication specifications required for the constraints when being tested and verified. This document is applicable to non-rigid parts.

This document describes a method for the determination of pH of salted water extracts of paper, board and pulp. This document applies to paper, board and pulps.

This document specifies the acceptance rules for steel tubular products as well as the technical requirements for packaging, marking and quality certificates. This document applies to acceptance rules for steel tubular products and general requirements for packaging, marking and quality certificates. When there are special provisions in product standards, follow the provisions of product standards.

This document specifies the diameter and pitch combination series of trapezoidal screw threads, and the profiles conform to the provisions of GB/T 5796.1. This document applies primarily to mechanical transmission screw threads, and may also be used for fastening screw threads.

This document specifies the expression for size designation of pressed-on solid tyres, as well as the size designation, dimensions, rate and load capacity for tyres. This document applies to the new pressed-on solid tyres used on counterbalanced trucks with mast and other industrial trucks.