Brief description of stud bolt standards

Stud bolt standards are very important for production and inspection. What are the contents of stud bolt standards and what are the applications of stud bolts? The following introduces you to the relevant content of stud bolt standards.

　　 Stud bolts are manufactured in accordance with the GB897-901 standard, the materials used are: Q235, 45#, 40Cr, 35CrMoA, Q345D, the specifications are: M3mm-M100mm, the length can be customized according to user needs.

　　 high-strength stud bolts, the materials are 35#, 45#, 35CrMoA, 25Cr2MoV, 304, 316, 304L, 316L, 2H, 2HM, B7, B7M, B16, B8, 8, B8M, 8M, widely used Electricity, chemical industry, oil refining, valves, railways, bridges, steel structures, automobile and motorcycle accessories, etc.

　　 Stud bolt function: generally used for mining machinery, bridges, automobiles, motorcycles, boiler steel structures, crane towers, large-span steel structures and large buildings, etc.

　　 The representation method of stud bolts: general stud bolts are expressed as: M12100 GB/T901-88 (standard) 35#/35# (material) 8.8 grade/8 (modulation grade) meaning: diameter u003d 12mm Lengthu003d100mm GB/T901-88 adopts the national standard (of course, industry standards can also be adopted as needed) (Guide: Introduction to the advantages and disadvantages of self-piercing riveting technology)

　　1. It is used in the main body of large equipment and needs to install accessories, such as sight glass, mechanical seal seat, reduction frame, etc. These are the stud bolts that are used, one end is screwed into the main body, and the other end is installed after the accessories are installed. Bring the nut, because the attachment is often disassembled, the thread will be worn or damaged, it is very convenient to use the stud bolt to replace it.

　　2. When the thickness of the connecting body is very large, and the bolt length is very long, stud bolts will be used.

　　 Stud bolt standard: GB/T900-1988

　　 stud bolt national standard quote:

　　 The end of the GB2 fastener outer spiral spun part;

　　GB196 ordinary thread basic size;

　　GB197 common thread tolerance and fit;

　　 GB1167 transitional fit thread (screw into cast iron, steel body);

　　GB1180 Overcurrent matching thread (screw into aluminum bowl);

　　GB3098.1 Mechanical function of fasteners Stainless steel bolts, screws, studs and nuts;

　　GB3098.6 Mechanical properties of fasteners stainless steel bolts, screws, studs and nuts;

　　 GB3103.1 Fastener tolerance bolts, screws and nuts;

　　GB5267 Threaded fastener plating layer;

　　GB5779.1 General requirements for surface defects of fasteners, bolts, screws and studs;

　　GB5779.3 Special requirements for surface defects of fasteners, bolts, screws and studs;

　　 GB90 fastener acceptance inspection, marking and packaging;

　　GB1237 The marking method of fasteners.

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