Search results for keyword: definition
Heat-resistant iron castings (abstract) GB 9437-88
Abstract
Heat-resistant cast iron, also known as heat resistant cast iron or heat resistant alloy cast iron, is a kind of cast iron material with strong heat resistance and high strength at high temperature. Its basic components are 2.5%-4.5% carbon and 11%-30% chromium, and some other impurities......
1089 
Mason
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......
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......
JB/T4750-2003 "Pressure Vessels for Refrigeration Devices" is a recommended industry standard (replacing JB6917-1998)
Pressure Vessels for Refrigerating Apparatus
This industry standard JB/T4750—2003 replaces JB6917-1998 and provides instructions for design and assessment tests for safe performance of pressure vessels for refrigerating apparatus.
1. Scope
This standard applies to pressure vessels used in the ......
JGJ81-2002 Construction steel structure welding technical specification (twenty-nine)
Steps for Welding Steel Structures According to JGJ 81-2002
Welding of steel structures is an important process in the construction and manufacturing industry. In the past, welding processes were largely undocumented and the industry relied on trial and error methods of welding that were often ti......
NF is the French standard
NF is the French Standard
France is a developed country with a rich history, culture, and economy. It also has a broad impact across the globe. A testament to this impact is NF, the French Standard, which has become internationally recognized.
But what is NF, and how has it become so influential......
Russian and European steel scrap standards
，标题为：Russia and European Scrap Steel Standards
Introduction
Scrap steel is an important resource in the industrial world today. It is used not only to make steel products, but also to manufacture parts and components for various machinery, vehicles, and tools. Steel scrap comprises a wide var......
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......
China's current heat treatment standards
Introduction
Heat treatment is a process used in the manufacturing of metal products and components for the purpose of changing their physical and sometimes chemical properties. Heat treatment is used in a wide range of industries, including automotive, aviation, electrical and medical manufactu......
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