Many people think that stainless steel Hexagon Socket Head Bolt is a screw that will not rust, but in fact stainless steel Hexagon Socket Head Bolt is not necessarily not rusty, but relatively speaking, stainless steel Hexagon Socket Head Bolt is more resistant to corrosion and rust than iron screws Be stronger. However, under certain circumstances, the stainless steel Hexagon Socket Head Bolt will still rust. So what is the cause of the rust of the stainless steel Hexagon Socket Head Bolt? What causes rust? zhejiangweigao China Custom Bolt Wholesaler, I will give you a specific introduction in this regard.
Stainless steel Hexagon Socket Head Bolt has good characteristics, high temperature resistance, strong corrosion resistance, and certain rust resistance. However, it will rust even in harsh environments. Like in a very humid environment, the wind blows the sun, the rain blows the wind. Over time, there must be some rust. Or it may come into contact with some acid-base chemicals and produce a chemical reaction, which may lead to corrosion and rust. There are some Hexagon Socket Head Bolts of stainless steel that are not suitable for a specific occasion. Like the material is stainless steel SUS201 Hexagon Socket Head Bolt, it is not suitable for use at sea because the seawater is salty and used in the sea. Time immersion in seawater will cause corrosion and rust. Therefore, if it is used in marine products, it is generally not recommended to use stainless steel SUS316.
It is not difficult to conclude from the above that the stainless steel Hexagon Socket Head Bolt will corrode and rust under certain conditions. This requires us to use stainless steel Hexagon Socket Head Bolt properly, and use it reasonably. Under different conditions, use different materials of stainless steel Hexagon Socket Head Bolt. In different occasions, when using stainless steel Hexagon Socket Head Bolt, pay special attention to the details, try to control the corrosion and rust of stainless steel Hexagon Socket Head Bolt.
The above is the non-standard stainless steel screw manufacturer-Jin Shengtai explained to you about whether the stainless steel Hexagon Socket Head Bolt will corrode and rust. I hope it will help you.

What are the characteristics of the appearance of roof bolts?  Next, Zhejiang Weigao Bolt Factory will introduce you in detail:
1. According to the stress mode of connection, there are common bolts and bolts for reaming holes. Bolts for reaming holes shall be matched with the size of holes and used when subjected to transverse force.
2, according to the shape of the head has a hexagonal head, round head, square head, countersunk head, etc. Generally countersunk head is used in the place where smooth surface is not protruding after connection, because the countersunk head can be screwed into the parts.

In addition, in order to meet the need of locking after installation, there are holes in the head and in the rod, which can prevent the bolts from loosening when subjected to vibration.
Some China Nut need to be made into thin smooth rods without threads, which are called thin waist bolts. These bolts are beneficial to the connection under variable forces.
There are special high-strength bolts on the steel structure. The head will be bigger. The size will also change.

In addition, there are special uses: T-groove bolts are used most frequently on machine tools and jigs, with special shapes. Both sides of the head must be cut off. Anchor bolts are used for connecting and fixing machines and the ground, and there are many shapes. U-shaped bolts, as mentioned above. etc.

There is also a special stud for welding, one end of which is threaded and the other end is not, which can be welded to the part while the other end is directly screwed with the nut.

Large hexagonal bolts are usually used in steel structures with two flat pads and high strength nuts.  Torsional shear high strength bolt pairs are also used in steel structures.  The strength grade is 10.9.  It is mainly used to connect power facilities and large steel structure products.  The nominal tensile strength of the big hexagonal bolt material reaches 400MPa grade;  The yield ratio value of the big hexagonal bolt material is 0.6;  The nominal yield strength of large hexagonal bolt material reaches 400×0.6=240MPa grade performance grade 10.9 grade high strength bolt.

The hexagon head of the large hexagon bolt is different from that of the general outer hexagon bolt.  The hexagon head size of large hexagon bolt is larger than that of ordinary hexagon bolt, so large hexagon bolt can also be called large hexagon bolt.

Zhejiang Weigao Standard Parts Company's raw materials for producing large hexagonal bolts are all high-quality steel products produced by domestic well-known large-scale iron and steel production enterprises in accordance with relevant material standards, and are manufactured and processed by international advanced professional production equipment.  Advanced heat treatment production line is adopted.  All production links are strictly controlled by the quality inspection department.  On-site inspection will eliminate the occurrence of unqualified products from the source to ensure that the performance index of each large hexagon bolt fully meets the product standard.  Our company is an ISO 9001 international quality management system certification enterprise. Our factory has complete testing equipment, strict quality control standards and strict quality inspection of finished products.  The large hexagonal bolts produced by our company are excellent in material selection, stable in quality, strict in inspection, reasonable in price, and provide product quality inspection certificates.  As a trustworthy China Custom Bolt Wholesaler, we can provide you with more comprehensive support and protection. We also welcome all interested customers to leave us a message.

The most important link in the development and design of Industrial Nut is quality control.  There are several main doors from feeding to finished product delivery, and these doors have different inspection methods.  First of all, feed is related to appearance, size, composition, performance, detection of harmful substances, etc.  This process is more about appearance, size, impact experiment and forging streamline.  Heat treatment is more about appearance, hardness, torque, tension and gold etc.  Surface treatment is more about hydrogen embrittlement test, coating, salt spray, etc.  , including testing of hazardous substances shipped.
In terms of size and appearance detection, secondary size, profile measuring instrument, three-coordinate measuring instrument and image sorting machine are commonly used (this is a full selection machine);
In mechanical and chemical tests, there are mainly hardness machines (Lloyd's and Vickers), tensile machines and metallographic microscopes.
Industrial nuts have spectrum analyzer and salt spray tester for material testing.