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Waste heat treatment steel bars for reinforced concrete (GB 13014-1991)
Heat Treatment of Steel Bar for Reinforced Concrete (GB 13014-1991)
The heat treatment of steel reinforcement for reinforced concrete structures is mainly to control the hardness and strength of steel, reduce the overall weight, and improve the formability, weldability and workability of steel. G......
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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......
Dimensional tolerances for electrolytic plates and rods of Japanese National Standards
Japan Standard Electrolytic Board and Rod Size Allowable Deviation
With the development of modern industry, electrical products are not only strong and durable, but also require precise size accuracy. The features of electronic components determine the characteristics of electronic products. Mech......
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, ......
Construction and acceptance standards for welding engineering of steel structure and steel components
Welded Structural Steel Components Construction and Acceptance Standard
In order to standardize the construction and acceptance of welded structural steel components, ensure the quality of construction and acceptance, and reduce the cost of maintenance, this standard is formulated in accordance w......
Commonly used wire gauge number and nominal diameter comparison table
Fillet Weld Size
Fillet welds are used for many applications and are important for the strength of the joint. Fillet weld size is usually specified on the drawing. Understanding the fillet weld symbols and their meaning is important for producing strong and reliable joints.
Fillet welds are str......
Welding process standard for steel structure manual arc welding
Standard Operating Procedures for the Manual Arc Welding of Structural Steel
1. Introduction
Arc welding is a process that involves joining two pieces of metal by using an electric arc to melt base materials together. Structural steel is commonly used in the construction of building and other st......
Weldability test lap joint (CTS) welding crack test method GB 4675.2-84
In the CTS welding crack test, the most important is to prepare the test specimen. Before the weldment is tested, it needs to meet certain requirements, otherwise the results obtained will not be meaningful. For example, the welding itself should be performed skillfully, and the components of the w......
Weldability Test Oblique Y-shaped Groove Welding Crack Test Method GB 4675.1-84
Spiral Welded Steel Pipe Grades and Standard Specification
Spiral welded steel pipes are widely used in petroleum, natural gas, water pipelines and other projects involving the transportation of various materials. This type of piping has been used for over a century, making it a reliable and popu......
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......
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