Maijin is specialized in all various custom-made CNC machining parts and CNC milling parts as well as non standard fasteners.
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Maijin is specialized in all various custom-made CNC machining parts and CNC milling parts as well as non standard fasteners.
The performance standards of bolts for steel structure connection are divided into more than 10 levels such as 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, etc. Among them, the bolts with 8.8 and above are made of low-carbon alloy steel or low-carbon steel and have undergone heat treatment (heat treatment, quenching). They are collectively referred to as high-toughness bolts, and others are collectively referred to as general bolts. There are two types of numerical combinations in the performance level model of large hexagonal bolts, each indicating the nominal strength and yield ratio of the bolt material. For example, large hexagonal bolts have a performance level of 4.6, meaning: 1. Large hexagonal bolts have a nominal compressive strength of 400MPa; 2. Large hexagonal bolts have a yield ratio of 0.6; 3. Large hexagonal bolts have a nominal tensile strength of 400×0.6=240MPa and performance grade 10.9 high-toughness bolts. Maijin introduced that the raw materials of large hexagonal bolts can be quenched and tempered to achieve: 1. The nominal compressive strength of the large hexagonal bolt material reaches 1000MPa; 2. The yield strength ratio of the large hexagonal bolt material reaches 0.9; The difference, the performance is the same, only the performance level can be used in the design.
We have achieved the stable sales record at the forefront of our industry in providing high quality products and services to our customers.
CONTACT DETAILS
Tel / Whatsapp: +8613632562601
Email: mj@chinamaijin.com
10F, 9 Building Block B, Bao Neng Science and Technology Park, NO.1 Qing Xiang Rd, Long Hua District, Shen Zhen City, China.
