4 precautions tell you how to choose really long screws?

Although there are many screw manufacturers in China, not all screw manufacturers can find really long screws of 100mm. Even if you find a manufacturer that can produce long screws, after using it for a while, you will find that the head of the long screw is disconnected from the rod. So, how do we find a long screw manufacturer that you can rest assured?

When purchasing really long screws, we will look for suppliers or manufacturers. What should we ask at the beginning of the production process they use? How did you make the long screws? The production process of long screws is nothing more than these: one is formed by welding. That is, the head and the rod are separately formed, and the head and the rod are connected by welding. There is also a cold shovel that is molded at one time using a clamping machine. This production method allows the head and the stem to be formed at one time, reducing the risk of breakage. Of course, there is another one that is processed by cnc. But this type of production will increase the cost a lot. The really long screws produced by Shenzhen Shi Shi Tong manufacturers are produced by the clamping machine. Shenzhen Shi Shi Tong 20 years quality assurance! Say the requirements, tailored, just to make you more satisfied.

When purchasing, be sure to determine the diameter of the stem above the thread below the head. The diameter of the rod is basically the same as the diameter of the thread. For example, the diameter of the thread of the M5 is 4.7-5.0. This is also a large rod. The diameter of the rod is much smaller than the diameter of the thread. It is called a small rod, such as the thread diameter of M5. The diameter of the rod is 4.2-4.5. This is a small rod. The difference in the diameter of the rods is very different in terms of weight, and it also has a great influence on the cost and freight.

Material. Because of the nature of the material, the length that can be produced is different. It can produce infinitely really long screws like stainless steel. However, for aluminum, titanium, and copper, the length of the long screw that can be produced is affected, and the influence of material characteristics during the production process may result in failure to form. Therefore, the production of really long screws is generally made of stainless steel and carbon steel.

Surface treatment. When a carbon steel screw with a length of 1000 mm is produced, although it can be produced, if a surface treatment such as nickel plating or galvanizing is to be performed, it is basically impossible to find a manufacturer. Screws made of carbon steel are generally surface treated, mainly for rust prevention, so that the screws are not so rusted. If you use stainless steel, you can directly clean the oil and ship it. Shenzhen Shi Shi Tong 31-year chief engineer and 11-year technical team are tailor-made for you, 8 processes in 8 processes to ensure quality.

The final summary is these four aspects:

1. The process of production;
2. Whether the pole is a big pole or a small pole;
3. Material;
4. Surface treatment;

If you want to customize really long screws, please send an email: annie.li@szsst88.com