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Choose a manufacturer specializing in the production of combined screws

 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 levels.
You need to choose a manufacturer specializing in the production of combined screws. Comparison and selection of screw manufacturers' strength, sales experience and other aspects. Comparison of purchasing factors such as price, quality, service, etc. of combined screws.
Precautions
Combination screws include sub-pan head combination screws, outer hexagon combination screws, and iron combination screws, which require electroplating. And stainless steel combination screws. No electroplating is required, and the surface is bright. According to your personal needs, you can choose combination screws of different specifications.

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