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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 ......
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GB/T24001-96 Environmental Quality Standard
Introduction
GB/T24001-2004 is a national standard in China for environmental management systems stipulating the requirements of an environmental management system. This standard applies to any organization that wants to establish and maintain an effective environmental management system (EMS) an......
Background of ISO14000 series standards
The International Organization for Standardization (ISO) is an international body whose purpose is to maintain standards for goods, services, and systems across the world. The ISO14000 series of standards is a subset of ISO standards which are specifically designed to help organizations understand......
JGJ81-2002 Welding Technical Regulations for Architectural Steel Structures (Part 18)
Welding Technology Regulation (18) on Steel Structures in BuildingsJGJ81-2002
The article originates from the national industrial production standard (JGJ81-2002) for the construction of steel structures. It is about the welding technology regulation of the steel structures.
The article consis......
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......
Technical Specification for Waterproofing of Underground Engineering (GB50108-2001)
Underground Engineering Waterproofing Technology Specification (GB50108-2001)
This standard specifies the technical requirements and acceptance criteria of waterproof engineering design and construction, the process of detection, acceptance, maintenance and management of underground engineering w......
GB/T 4162-91 Ultrasonic Inspection Method for Forged Steel Bars
材料
Abstract
Ultrasonic testing is an important technique for detection of rolling defects in steel bars. Ultrasonic testing is typically used to detect internal flaws, such as cracks and other discontinuities, that cannot be detected by visual inspection. GB／T 4162–91 regulates the ultrasonic ......
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......
Carburized bearing steel (GB 3203-82)
Carburized Steels (GB 3203-82)
Carburized steels, also known as carbonized steels, are steels that have been subjected to a process of carburization in order to increase their resistance to wear, corrosion and fatigue. Carburization is a process of chemical reaction that takes place at elevated t......
Eddy current test method for titanium and titanium alloy pipes GB/T 12969.2-91
Abstract
This paper introduces GB／T 12969.2-91 Eddy Current Method for inspecting titanium and titanium alloy pipes. Eddy current method is an non destructive testing (NDT) technique for performing the inspection of titanium and titanium alloy pipes. The technique is an electromagnetic test whic......
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