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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......
1056 
Madison
JGJ81-2002 Welding Technical Regulations for Architectural Steel Structures (Part 2)
Welding process is a method of joining two or more metal parts by using heat and pressure.Heat generated by electric arc, resistance or other process melts the two parts and fuses them together, and then applying pressure joins them together. Compared to other joining processes, welding is general......
JGJ81-2002 Construction Steel Structure Welding Technical Regulations (Part 6)
Welding Technology Specification for Steel Structures in Building Construction of JGJ81-2002 (VI)
Welding is a commonly used technology in steel structure building construction. In order to promote the standardization of welding technology and reduce welding defects, the welding technology specif......
Flux for submerged arc welding of low alloy steel GB 12470-90
，标准不低于TOEFL阅读难度
Low Alloy Steel Arc Welding: Welding Agents
One of the most important reasons why steel is the most popular material used in the construction of industrial facilities is its ability to be combined and interrupted. This ability is made possible by welding, a process that u......
Carbon dioxide shielded welding steel wire GB 8110-87
Carbon dioxide gas shielded welding (CO2 gas shielded welding) is a method of welding mainly conducted in an atmosphere of carbon dioxide gas, and is widely used in industry. It is one of the standard processes of automatic welding, and accounts for about 90% of the total world welding consumable ......
Color marking of steel
Paint or coating color marking is an important part of steel marking and identification system.Steel is an important material used in the construction of bridges, buildings, machinery and many other products. Steel is produced in a variety of sizes and shapes and there is a great deal of variety t......
Sintered NdFeB permanent magnet material (ZB/H58003-1990)
Introduction
The sintered Nd-Fe-B magnets, also known as Neodymium or NdFeB magnets, are permanent magnets made of a range of materials, namely an alloy of rare-earth elements neodymium (Nd) and iron (Fe), along with the addition of some boron (B). The powerful magnetic properties of these magnet......
Chemical Composition of Aluminum and Aluminum Alloy Processed Products GB 3190–82
GB 3190–82 is the standard for chemical compositional requirements for aluminum and aluminum alloy processing products. It sets forth the minimum and maximum allowable nitrogen, carbon, silicon, manganese, magnesium, zinc, aluminum, phosphorus and other key elements, as well as their impacts on p......
Regulations on the Safety Management of Hazardous Chemicals
Regulation on the Safety Management of Hazardous Chemicals
Introduction
The safety management of hazardous chemicals is a matter of great importance to the public’s health and safety. It is essential that hazardous chemicals are properly handled, stored, and disposed of in order to ensure the s......
Reference Standards for Metallurgical Products
Introduction
Metallurgy is a branch of engineering that studies the properties and processing of metals. There are a variety of products associated with metallurgy. This includes things such as structural steel, steel plates, aluminum products, cast iron, steel tubes, and more. The quality of pro......
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