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Haiyan Tianqi Fastener Co., Ltd.
  • Add:Jiaxing Haiyan China NO.1-3 Jincheng South road, Qinshan Industrial Zone of Haiyan, Jiaxing
  • Tel:+86-573-86408971
  • Mobile Phone:+86-13606831322
  • Fax:+86-86408973
  • E-mail:tianqi@din571.com
  • Post Code:314300
  • Skype:tianqi

How to see the quality of Concrete Screws?


We often say that the quality of this combination screw is very good when we manufacture a combination screw and a purchaser orders a combination screw. So in the end how to see whether the quality of the combination of screws is good! Here's a brief introduction for everyone:
The quality of the combination screw must first start with the screw wire of the combination screw manufacturer. The wire of the screw is the first pass to decide the quality of the combined screw. The wire is not good. Even if the production equipment is advanced and the staff is excellent in technology, no high-quality combination screw can be produced.
Look at the quality of the combined screw product at a second look from the overall aesthetics of the combination screw. A combination screw is formed. The size of the head of the screw, the appearance of the flat pad, the screw thread can not pass the check and so on. These are all need to be detected. A good combination of screws, the overall standard can meet the national standard requirements, or customer requirements.
Finally, looking at the quality of the combined screw products, from the plating color point of view, of course, the iron combination screws need to be electroplated, but the stainless steel combination screws are not required. Some of them are passivation, in order to increase the salt spray of stainless steel screws. The color of the combined screw plating is not well controlled and will produce a large color difference. This is not very good-looking.


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