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Composite steel plate ultrasonic flaw detection method GB 7734-87
Ultrasonic testing is a form of non-destructive testing that utilizes the principle of ultrasound, which is the vibration of sound waves greater than the human ear can detect, to detect flaws in a material. It’s one of the most common testing methods used to inspect steel plates, and can be appli......
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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......
Classification method of radiography and film grades of steel castings (abstract) GB 5677-85
X-ray photography and film grading of castings is a widely accepted practice used to detect any discontinuities and flaws in the casting. In recent times, this method has become a standard to evaluate the quality of castings and to determine the necessary measures needed to achieve certain quality......
Alloy structural steel (GB 3077-88) (8)
Alloy Structural Steel (GB 3077-88)
Alloy structural steel is a kind of steel which is used for making steel parts and components. Alloy structural steel is defined as a kind of steel combining the properties of carbon steel and alloy steel. The characteristics of alloy structural steel are its h......
Alloy structural steel (GB 3077-88) (2)
翻译
Alloy Structural Steel (GB3077-88)(Two)
合金结构钢（GB3077-88）（二）
1. Scope
1.范围
This standard specifies the hot rolled and forging alloy structural steel, used for mechanical structures and components.
本标准用于规定热轧和锻造的合金结构钢，用于机械结构和零件。
2. Normative Referenc......
Alloy structural steel (GB 3077-88) (6)
Alloy structural steel(GB 3077-88)
Alloy structural steel is a kind of steel alloy used in a variety of structural applications. It is composed of a combination of metal elements, including manganese, tungsten, vanadium, molybdenum, nickel, and chromium, which increase hardness and durability whi......
Alloy structural steel (GB 3077-88) (3)
1. Introduction
Alloy structural steel ( GB 3077-88) is a kind of alloy structural steel formulated by the State Economic and Trade Commission. The standard includes the following grades of alloy structural steel: 15Cr, 20Cr, 30CrMnSiA, 35CrMnSiA, 20CrMnMo, 20CrMo, 30CrMo, 25CrMoV, 14CrMo, 20CrV,......
Alloy structural steel (GB 3077-88) (4)
The development process of alloy structural steel (GB 3077-88)
Alloy structural steel is one of the important structural materials in engineering and plays an important role in the development of Chinas steel industry. In 1988, an alloy structural steel variety was added, and it was also the basi......
Alloy structural steel (GB 3077-88) (5)
Alloy structural steels are series of steel grades with special chemical compositions and/or mechanical properties which is mainly used in bridges, offshore structures, ships, vehicles, and steel structures. The alloy structural steel GB 3077-88 is a kind of hot rolled and forging alloy steel for ......
Alloy structural steel (GB 3077-88) (1)
Alloy structure steels (GB 3077-88)
Overview
Alloy structure steels refer to the type of alloy steel which has been developed for the purpose of the restructure of steel objects in the engineering industry. Specifically, GB 3077-88 refers to the alloy structure steel used in such structures as m......
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