Search results for keyword: procedure
Metal Tensile Test Method GB 228-87
Metal tension experiment is an important research method in the field of mechanical engineering, which can effectively detect the performance of metals. The national standard of GB 228-87 was issued to regulate the detection and analysis of tension performance of metals. Through strict control of ......
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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......
Metal Charpy (U-notch) impact test method GB229-84
Metal Charpy (U-notched) Impact Test Method
The Charpy impact test, also known as the Charpy V-notch test, is a type of fracture testing methodology. It is used to determine impact fracture strength of particular metals. The Charpy U-notch test method, as specified in GB229–84, is intended to pr......
Hot-rolled rings (YB/T4068-1991)
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Hot Rolling Rings (YB/T4068-1991)
Hot rolling is a metallurgical process used to transform metal alloys in order to increase strength and reduce material costs. The process is often used to produce metal or alloy rings, specially-shaped components, or gears. Hot rolling rings ......
GB 10178-88 Ventilator field test (2)
GB 10178-88 Site Test for Fans
A site test of a fan should be conducted in order to ensure that all components of the fan, such as its motor, drive, impeller, and housing are all operating correctly. This test will allow for easy troubleshooting of any issues that may arise. The following outline......
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 12801-91 General Principles of Safety and Sanitation Requirements for Production Process
12801-91 Production Process Safety and Health Requirements General Provisions
This standard specifies the requirements and regulations of the production process safety and health in order to prevent and reduce occupational accidents, injuries and diseases. The objective of this standard is to ens......
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 13456-92 Discharge Standard of Water Pollutants for Iron and Steel Industry
GB 13456-92 Steel Industry Water Pollution Emission Standards
In order to protect the environment, the State Council ratified the Steel Industry Water Pollution Emission Standard (GB 13456-92) on April 1, 1993, which became effective on July 1 of that same year. This standard applies to all types......
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......
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