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Sample sampling method for chemical analysis of steel and allowable deviation of chemical composition of finished product
Chemical Analysis of Steel using Sample Testing and Allowable Deviations in Chemical Composition of the Finished Product
Steel is a material that has been of long-standing use in engineering and construction due to its strength, hardness, and durability. The chemical composition of steel is what ......
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Emily
In 2008, a number of mandatory standards for the instrumentation industry will be formulated
Introduction
In 2008, a number of compulsory standards in the instrumentation and measurement sector will be implemented. These standards are set to provide additional certainty and quality assurance for manufacturers, consumers and industrial end-users who regularly use or are involved in the se......
WS/T Allowable Concentration of Hazardous Substances in the Air of Working Environment in my country and Occupational Exposure Biological Limits
Introduction
The air we breathe can have a great impact on our health. Since the industrial revolution, air quality has been declining due to the number of chemicals and other pollutants in the atmosphere. This is why there are regulations to control the maximum amount of toxins and other polluta......
Guaranteed hardenability structural steel (GB/T5216-1985)
High Strength, High Toughness and High Hardness Steels
It is widely accepted that high strength and high toughness steels are the key to achieving efficient and cost effective structures. High strength and high toughness steels are generally understood to refer to steels characterized by tensile ......
Processed Copper - Chemical Composition and Product Shape GB 5231-85
Metallurgy of Copper
Copper is one of the oldest and most important metals ever used by man. Its malleability and ductility have seen it be used a wide range of applications and the fact that is can be recycled safety, makes it a very important material in modern society. This essay looks at the ......
Construction project supervision specification (GB50319-2000)
Chinese Construction Project Supervision Standard (GB50319-2000)
China has experienced a dramatic shift in its labor force and economy in the last few decades. This shift has necessitated the adoption of stricter and more comprehensive regulations, standards, and guidelines for China’s construc......
National Development and Reform Commission approves several cemented carbide industry standards
Introduction
In recent years, China has actively advanced the standardization of the hard alloy industry in accordance with the overall principle of strengthening the work of industry standardization and promoting the transformation of industrial structure and quality. China National Development ......
Welding and Welding-Rolled Titanium Tube GB 4367-84
，题目是GB 4367-84 Welding and Rolling of Titanium Pipes
Welding and Rolling of Titanium Pipes GB 4367-84
Titanium is a lightweight, strong, corrosion-resistant metal that is increasingly used in construction and other fields. Its properties make it suitable for a wide range of applications, such......
Carbon steel castings for welded structures (abstract) GB7659-87
Welding Structural Carbon Steel Castings
Welding is a viable option when it comes to structurally reinforcing carbon steel castings. Carbon steel castings, because of their malleability and versatility, are used in a wide range of industries, including automotive, construction, and industrial equ......
Gray iron castings (abstract) GB 9439-88
Abstract
GB 9439-88 is a national standard for gray cast iron parts. Gray cast iron is a type of cast iron which has an even surface and a dense microstructure with excellent mechanical properties and wear resistance. This standard specifies the requirements, test methods, acceptance criteria, ma......
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