Japanese standard angle steel is a type of steel used to support and connect structures, and it comes in a variety of specifications and sizes. Among them, the Japanese standard angle steel 100*75*7 is a commonly used specification, which is widely used in construction, bridges, machinery and other fields. In order to ensure the safety and stability of the use of Japanese standard angle steel, it is necessary to follow certain dimensional specifications.
1. Size standard.
The size of the Japanese standard angle steel 100*75*7 should comply with the provisions of the national standard GB T 706-2016. This standard specifies the requirements for the size, shape, weight and allowable deviation of hot-rolled equilateral angle steel. According to this standard, the cross-sectional size of the Japanese standard angle steel 100*75*7 should be 100mm*75mm and the thickness should be 7mm.
Second, the material requirements.
Japanese standard angle steel should be made of high-quality low-carbon steel or low-alloy steel to ensure its strength and toughness. At the same time, the steel should comply with the provisions of relevant national standards, such as GB T 700-2006 "Technical Conditions for Ordinary Carbon Structural Steel" or GB T 1591-2018 "Low Alloy High Strength Structural Steel".
Third, the appearance quality.
The appearance quality of the Japanese standard angle steel should meet the following requirements:
1.The surface should be flat and smooth, without cracks, folding, bubbles and other defects;
2.The edge should be free of delamination, no shrinkage porosity and other defects;
3.The corners should be cut neatly, with punctures and other defects.
Fourth, mechanical properties.
The mechanical properties of Japanese standard angle steel should comply with the provisions of the national standard GB T 706-2016. Specifically, the tensile strength and yield point of the Japanese standard angle steel 100*75*7 should meet the following requirements:
1.Tensile strength: not less than 440MPa;
2.Yield point: not less than 335MPa;
3.Elongation: not less than 21%.
5. Precautions for use.
When using Japanese standard angle steel, the following points should be noted:
1.Choose the right size and size according to the actual needs;
2.Attention should be paid to the angle and position during installation to ensure that the connection is firm;
3.Its stability and safety should be checked regularly during use;
4.If it is found to be damaged or deformed, it should be replaced in time.
In a word, Japanese standard angle steel 100*75*7 is a commonly used steel specification, and certain size specifications need to be followed in the process of use to ensure its safety and stability. At the same time, attention should be paid to selecting appropriate specifications and sizes during use, and regular inspection and maintenance should be carried out.