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GB 8650-88 Test method for resistance to stepped cracking of pipeline steel
GB 8650-88 provides a method for a fracture test that assesses the ability of steel pipelines to withstand different conditions. This test involves a pipe filled with water, the pressure of which is gradually increased. At each stage, the pipe is blocked off, and then examined afterwards to see if......
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Boiler raw material incoming inspection JB 3375-83
Boiler Raw Materials Incoming inspection JB 3375-83
Inspections of raw materials prior to their incorporation with the boiler process are often employed to ensure the quality of the end product. The quality assurance standard of the incoming inspection of raw materials for boilers is JB 3375-83-......
National Development and Reform Commission approves several cemented carbide industry standards
Introduction
In recent years, China has actively advanced the standardization of the hard alloy industry in accordance with the overall principle of strengthening the work of industry standardization and promoting the transformation of industrial structure and quality. China National Development ......
Welding and Welding-Rolled Titanium Tube GB 4367-84
，题目是GB 4367-84 Welding and Rolling of Titanium Pipes
Welding and Rolling of Titanium Pipes GB 4367-84
Titanium is a lightweight, strong, corrosion-resistant metal that is increasingly used in construction and other fields. Its properties make it suitable for a wide range of applications, such......
NJ 431-86 Technical Conditions for Welding and Repairing Defects in Gray Iron Castings
Defect Repair Of Grey Iron Casting
Grey iron castings are commonly used for casting structural parts in many industrial equipment. According to their structural characteristics, defects are prone to occur during the process of grey iron casting.Moreover, the defects of grey iron castings are usua......
Gray iron castings (abstract) GB 9439-88
Abstract
GB 9439-88 is a national standard for gray cast iron parts. Gray cast iron is a type of cast iron which has an even surface and a dense microstructure with excellent mechanical properties and wear resistance. This standard specifies the requirements, test methods, acceptance criteria, ma......
Civil Building Reliability Appraisal Standard (GB50292-1999)
1 Introduction
The purpose of this standard is to provide standard parameters for evaluating the reliability of civilian buildings. This standard is designed to enable authorities to identify and validate structures that are safe and reliable.
2 Scope of Application
This standard is applicable ......
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......
Low temperature Charpy impact test method for metals GB 4159-84
，要求不少于2500 The Test Method of Low Temperature Charpy Impact Test for Metals
Low-temperature Charpy impact test is a kind of mechanical test which is usually used to measure the impact properties of metals. It is a test method used to measure the energy absorbed by a metal during fracture unde......
Alloy structural steel bars for steam turbine bolts (YB/T158-1999)
Turbine bolt alloy steel bar (YB/T158-1999) Introduction
Turbine bolt alloy steel bar, also known as turbine rotor head bolt steel bar, is an important material widely used in the power industry. It is mainly used as a connecting bolt in turbines, generators and other high-speed and heavy-duty ro......
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