Consumers, as non-professionals, how to protect their own interests to ensure that they do not buy bad screws, screw manufacturers share some tips for selecting screws, hoping to help everyone choose to buy screws.
1. The screw manufacturer tells you that the surface of the good screw is fine and smooth, smooth and regular, and the bad edge is not polished, and there are burrs. If this is the case, try to buy a smooth and good screw;
2. Good quality screws have a long service life. You can ask the manufacturer how much its service life is to decide whether to buy it;
3. The screws shared by the screw manufacturers can fasten objects, machines, and work closely with other things.
How to judge the quality of stainless steel screw manufacturers?
The screws produced by stainless steel screw manufacturers are widely used in electrician, electrical appliances, lighting and hardware building materials manufacturing industries to make them beautiful, strong, safe and stable. So how do you judge that the screws produced by stainless steel screw manufacturers are of good quality?
1. A good time for establishment is important, because you have been doing it for a long time and have rich experience. If you want to buy good stainless steel screws, you may choose a screw manufacturer with a longer age;
2. Understand the company you want to choose from the perspective of peers or customers, so that you can think about whether to choose this one;
3. You can start with the customers who cooperate with stainless steel screw manufacturers to find out whether their after-sales service is possible.
There are many kinds of electroplating of iron combination screws: ordinary and environmentally friendly. For example: color zinc, generally called red color. White zinc, black zinc, white nickel. Blue zinc. There are environmentally friendly color zinc, environmentally friendly white zinc, and environmentally friendly blue zinc. Environmentally friendly white nickel. There are more advanced ones. Nickel on copper, nickel in brine. Tools/Materials Screw wires, iron screw wires include 1010, 1018, 10B21, etc. Stainless steel screw wires include SUS201, SUS304, etc. Steps/Methods The requirements for the material of the combined screw depend on which material is required, whether it is iron or stainless steel. What is the national standard number of the combination screw? There are GB9074.8 and GB9074.4. There are GB9074.13 and so on. The mechanical performance and strength requirements of the combined screw need not be hardened. The level requirements are divided into 4.8 and 8.8 l...
评论
发表评论