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Quality standards for steel surface cleaning
Quality Standards for Surface Cleaning of Steel
Surface cleaning of steel is an important part of the manufacturing process of steel products. It is important to clean any contaminants from the surface of the steel before it is formed or machined. This helps to ensure the quality of the finished ......
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Allowable Deviation of Japanese National Standard Taper Thread Dimensions
Japanese Standard Thread Tolerance
Threads are a fundamental mechanical part used to join two components together. The most common thread type used in Japan is the “Japanese Standard Thread”. This thread type is an ISO metric thread, which means that it has a uniform size and pitch for each thr......
Sample sampling method for chemical composition analysis of steel and chemical tolerance of finished product (GB222-84) (2)
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Sample Collection and Chemical Composition Analysis of Steel
Steel is a most widely used material in the 21st century, with the exception of the automotive industry and the construction industry, whose usage covers almost all aspects of modern industry and production. As an important material, ......
Test method for strain aging sensitivity of steel (Charpy impact method) GB 4160-84
Introduction
Xiebisheng test is a common tool used in among metallographers. It is a specially studied impact test which is capable of telling the user stress-strain sensitiveness of particular materials. In this test, a sample of material is evaluated for its property of sensitizing to strain an......
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......
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......
GB 12801-91 General Principles of Safety and Sanitation Requirements for Production Process
12801-91 Production Process Safety and Health Requirements General Provisions
This standard specifies the requirements and regulations of the production process safety and health in order to prevent and reduce occupational accidents, injuries and diseases. The objective of this standard is to ens......
GB 3838-88 Surface Water Environmental Quality Standard
GB 3838-88 Groundwater Environment Quality Standard
Introduction
The quality of groundwater is important for human activities, environment protection and ecological security. To ensure the quality of groundwater, the Environmental Protection Agency of China (EPA) established the Groundwater Env......
Galvanized welded steel pipe for low-pressure fluid transmission GB T3091-93
Low-pressure fluid transport galvanized welded steel pipe
Low-pressure galvanized welded steel pipe is widely used for transporting various low-pressure fluids such as water, oil, gas, air, heat transfer fluid and steam. The main features of this type of pipe are high corrosion resistance, accura......
Iron Chip Progressive Die Processing Requirements
Introduction
The assembly of electronic components requires precise levels of accuracy and attention to detail. This is especially true with the machining of core chips, which are integral to the circuit boards used in a variety of electronic devices. The success of the machining process depends ......
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