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Surface roughness
Surface Roughness
Surface roughness is an important part of many industrial processes. It is a measure of the irregularities in the surface of an object. The irregularities can be the result of the manufacturing process or other processes such as machining, welding, grinding, blasting, etc. If a ......
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GB 3095-1996 ambient air quality standard
3095-1996 Air Quality Standards
The air quality standards issued by the Chinese government in 1996, GB 3095-1996, are used to evaluate the air quality of various areas. The standards, also called air quality index standards, are designed to both protect human health and promote the environment.
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GB/T 714-2000 Mechanical properties and technological properties of structural steel for bridges
GB/T 714-2000 Structural Steel for Bridges —Mechanical and Technological Properties
This standard mainly applies to hot-rolled structural steel plates, bars and shapes used in bridges. The general requirements and technical conditions of delivery for steel structural products are stipulated in......
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......
Summary of Progressive Cavity Pump Standards
Centrifugal and Screw Pumps: Standards
Centrifugal and screw pumps are two of the most commonly used pumps in industry today. They are reliable, durable, and able to handle a wide range of pumping applications. Many industries require that these pumps adhere to certain standards in order to ensur......
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......
National standard
Standardization
Standardization involves creating standards that help individuals agree on a common set of rules and measurements when sending and receiving data, documents, and goods. Standardization reduces inconsistencies in the way that these things are expressed and communicated. It also hel......
German quenched and tempered steel
Germany, a country well known for its high material quality and its highly developed educational, industrial and scientific communities, has long been a leader in the development and production of high-quality steel. Alloy steel has been important to Germany since the 19th century and continues to......
Chinese steel grade representation method
China has developed different steel codes and numbers to identify different types of steel. The national standard, the GB/T 222 “Permissible Tolerances for Chemical Composition of Steel Products”, is the basis for the standardization of the various types of steel’s composition in China. Steel gr......
Aluminum and aluminum alloy welding wire GB 10858–89
GB 10858–89 Aluminum and aluminum alloys welding wire Among all kinds of welding wires, aluminum and aluminum alloys welding wires are widely used, especially in industries such as shipbuilding, manufacturing, oil and gas, and construction. In order to ensure the quality and safety of aluminum and......
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