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Metal bending test method GB232-88
The bending test of metal is a widely used test method in the field of metal shape and size control. It can be used to measure the load-bearing capacity, plastic deformation and springback of various metal materials. As an important detection method of metal materials, bending test has a certain i......
tags: bending test metal bending test specimen
1074
Oliver
General requirements for surface quality of hot-rolled steel sheets GB T14977-94
General Requirements for the Surface Quality of Hot Rolled Steel Sheets Hot-rolled steel sheets are widely used in construction engineering and other industries due to their excellent characteristics. To ensure a good performance, it is necessary to meet the surface quality requirements. General ......
tags: surface steel quality steel hotrolled surface
1072
Sophia
Malleable Iron Castings (Abstract) GB 9440-88
GB 9440-88 is a national standard issued by the Ministry of Industry and Information Technology of the Peoples Republic of China. It specifies technical requirements, test methods and inspection rules, conditions of supply and acceptance, and packaging, marking and quality certificate of cast iron......
tags: cast iron quality iron castings standard
1042
Sophia
GB 12348-90 Boundary Noise Standards for Industrial Enterprises
Noise Standards for Industrial Enterprises The 12348-90 Noise Standard for Industrial Enterprises is an important national noise standard formulated by the Chinese government to guide the development of a safe, healthy and rational production environment for the industrial sector. It aims to ensu......
GB 12827-91 standard reference acetylene carbon black and identification method
Carbon black refers to black powdery or granular material, which is composed of many tiny particles with the average particle size of between 10 and 2000 nanometers. It is composedot many carbon atoms buthydrophobic in nature. Carbon black can be prepared by pyrolysis of hydrocarbons such as coal ......
GB 13223-1996 Emission Standard of Air Pollutants for Thermal Power Plants
Atmospheric Pollution Standards for Thermal Power Plants GB 13223-1996 Thermal power plants generate electricity through the burning of coal and the burning of the coal releases pollutants into the atmosphere. China enacted the Atmospheric Pollution Standards for Thermal Power Plants GB 13223-199......
tags: plants emissions power power plants thermal
1090
Sophie
GB 17926-1999 Compressed natural gas cylinder valves for vehicles
GB 17926-1999Road Vehicle Compressed Natural Gas Cylinder Valves This standard applies to road vehicle compressed natural gas (CNG) cylinder valves (hereafter referred to as valves).These valves are used for the connection of CNG cylinder and the other components in CNG system. The technical re......
tags: test valve should valve gb179261999 vehicles
1233
Sophie
GB 18218-2000 Identification of Major Hazard Sources
Identification of Major Hazard Sources Introduction Major hazard sources (MHS) are sources of extreme danger or destruction, typically those which can cause large-scale disasters or major economic and environmental damage. The identification of major hazard sources is very important in ensuring ......
Evolution of GB/T 1220 Standard for Stainless Steel Bars
GB/T 1220 Standard Evolution of Stainless Steel Bars The history of the development of a variety of industry standards and regulations, including those related to stainless steel bars (SSBs), began nearly two decades ago, when the standard of GB/T 1220 was initiated and announced in 1998. The sta......
tags: standard ssbs has bars steel stainless
1031
Sophie
GB/T 13201--91 technical Method for Establishing Local Air Pollutant Emission Standards
GB/T 13201--91 technical Method for Establishing Local Atmospheric Pollutant Emission Standards This paper focuses on the technical method formulated in the standard of GB/T 13201--91, designed to establish local atmospheric pollutant emission standards. This standard specifies the steps and proc......
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