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HJ/T 60-2000 Determination of sulfide in water by iodometric method
translation: Determination of Sulfide in Water Quality According to HJ/T 60-2000 Iodometry Method
Sulfide is an important environmental pollutant and its concentrations must be determined to assess water quality. HJ/T 60-2000 iodometry method is a reliable and widely-used qualitative method used t......
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GWFD 5-2000 Cooking Fume Emission Standard
GWFD 5-2000 Catering Industry Fume Emission Standard
This GWFD 5-2000 Catering Industry Fume Emission Standard is formulated according to the requirements of the Pollution Prevention Act and the air pollution control technical standards. The purpose of this standard is to regulate catering indust......
GWPB 4-1999 Discharge Standard of Water Pollutants for Synthetic Ammonia Industry
GWPB 4-1999 Synthetic Ammonia Industry Water Pollutant Discharge Standard
The General Water Pollution Prevention and Control Board (GWPB) 4-1999 Synthetic Ammonia Industry Water Pollutant Discharge Standards is intended to address pollutants discharged from the synthetic ammonia industry, includi......
HJ/T 56-2000 Determination of sulfur dioxide in exhaust gas from stationary pollution sources by iodometric method
Determination of sulfur dioxide in the exhaust gas from fixed sources of pollution HJ/T 56-2000
The content of sulfur dioxide in exhaust gas is one of the main pollutants that affect urban air quality. According to the technical specification for air pollutants from fixed sources of pollution (HJ......
Bearing Life Evaluation Method under Different Operating Conditions
Evaluation Methods of Bearing Life under Different Use Conditions
1 Introduction
Bearing is an important part of a machine and its life is an important factor in machine reliability. As many machines as possible, a bearing failure will result in a catastrophic failure of the machine and affect t......
The Welding Process Parameters for Spot Welding of Alloyed Galvanized Steel Sheet by Melting Method
Welding Process Parameters of Melting Method Galvanized Steel Sheet Spot Welding
Spot welding is a welding process that uses two electrodes to apply pressure and electrical current to metal sheets that are placed in contact with each other. Among the different spot welding processes, melting meth......
Defects in Phosphating Treatment and Prevention Methods
Defect and Prevention of Phosphide Treatment
Defect and Prevention of Phosphide Treatment
Phosphide treatment is a widely-used method for treating metal materials, which is widely used in a variety of fields including metallurgy, petroleum and water conservancy engineering. This treatment require......
Control of Ferrous Sulfate Content in Pickling
Control of Ferrous Sulfate Content in Acid Washing
Acid washing is the process of removing mineral deposits, scale, and other surface deposits from masonry and metal surfaces by the use of chemicals, water, and heat. Acid washing is most often performed with sulfuric or hydrochloric acid, while ......
Weight flow rate loss coefficient when the flow rate is 200-250 during pouring
Weight Flow Loss Coefficient when Flow Rate is 200-250
When considering the performance of water piping systems, it is important to understand the concept of weight flow loss coefficient. This coefficient is a measure of the amount of energy lost due to friction from the friction headloss on the ......
Types and Chemical Compositions of American Standard Austenitic Gray Irons
Cast Iron Grades and Chemical Composition
Cast iron is an alloy of iron that contains from two to four percent of carbon, as well as varying amounts of silicon, manganese, and other impurities. Different grades of cast iron are available depending on the chemical composition of the alloy. These d......
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